Railway vehicles, station facilities and parallel transmission systems

Abstract

To provide a parallel transmission system capable of safely supplying a large amount of electromagnetic energy for a short period of time while a train is stopped. [Solution] Body 31a k The storage batteries (X Leq )6 j and a distributed storage boost system that performs integrated addition processing of charging voltage to boost the voltage, and a storage battery 6 that converts electromagnetic energy into j Inductive power receiving board 11 supplying j and inductive receiving board 11 j The inductive power receiving board 11 is located opposite to each other in a one-to-one relationship. j Inductive feeder board 12 facing each other j and inductive power supply board 12 j The power supply coils constituting the power supply circuit are provided with a plurality of coil current supply circuits that periodically switch between two transient response states and supply synchronized coil currents to the respective power supply coils.

Description

[Technical Field]

[0001] The present invention relates to a contactless power transmission system (wireless power transmission system), and in particular to a railway vehicle that does not require a pantograph or an overhead wire, a station facility equipped with a wireless power supply device that can supply power to the railway vehicle, and a parallel transmission system that transmits a large amount of electromagnetic energy in parallel without contact from the wireless power supply device to a power receiving device of the railway vehicle. [Background technology]

[0002] Conventional electric railcars, such as elevated line electric trains and subway trains, incur enormous costs for the installation of overhead lines and other facilities, as well as for repairs, replacements, and maintenance. However, pantograph and overhead line failures frequently cause service outages. Furthermore, the pantographs and other components generate frictional noise and electrical noise while the trains are running. Furthermore, systems that transmit power to elevated lines, such as overhead lines, have high transmission voltages, making maintenance and repair work highly dangerous. Furthermore, these systems pose a risk to passengers, necessitating restrictions on the design of station facilities. Furthermore, the utility poles supporting the elevated lines and the overhead lines themselves mar the aesthetics and affect the view from inside the trains.

[0003] Therefore, the development of electric vehicles equipped with storage batteries is eagerly awaited. Such electric vehicles must be configured so that while parked at an electric vehicle depot or station with charging facilities, the electric power required for the electric vehicle's operation and the electromagnetic energy consumed by on-board equipment are charged to the storage battery until the next charging facility is reached. The energy required to transport one person per unit distance for an electric train is said to be 209 kJ / person·km (see Non-Patent Document 1). An 11-car Yamanote Line commuter train has a capacity of 1,724 passengers. Therefore, using the values ​​in Non-Patent Document 1, the energy required to transport 1,724 passengers 2 km during a 30-second stop is 209 × 1,724 × 2 = 721 MJ. To charge a battery-equipped electric vehicle with the required power, charging must be completed within the short 30 seconds or so that the electric vehicle is parked at a station with charging facilities. This requires a high-current, short-time rapid charge.

[0004] When onboard batteries are charged by contact charging via a power supply pantograph compatible with high-current charging at stations equipped with charging facilities, there is a limit to how large the contact area between the power supply pantograph and the power supply rigid overhead line can be, making this configuration unsuitable for short-term rapid charging. Furthermore, current is supplied via the power supply pantograph, and return current flows from the bogie wheels to the rails. This current then flows from the axles to the wheels via brushes electrically connected to the negative terminal of the onboard batteries, and then from the wheels to the rails. This increases electrical resistance, and when a large current flows, a corresponding voltage drop and Joule heat are generated, hindering the flow of large current. For these reasons, contact charging is also unsuitable for short-term, high-current rapid charging.

[0005] Since its proposal by the Massachusetts Institute of Technology (MIT) in 2005, research into wireless power transmission using sinusoidal electromagnetic waves has been active (see Patent Document 1). In response to this, the present inventors have proposed a contactless power transmission method using natural harmonic oscillations between a power supply resonant circuit and a power receiving resonant circuit based on non-AC theory focusing on transient response, and have proposed a contactless power transmission device that does not use expensive AC power supply circuits such as switching power supplies in the power supply device (see Patent Document 2). "Natural harmonic oscillation" is a phenomenon similar to double resonance in AC theory, and refers to the natural vibration due to the natural angular frequency of the transient phenomenon in the power supply circuit and the harmonic oscillation due to the natural angular frequency of the transient phenomenon in the power receiving circuit. Therefore, it refers to a phenomenon in non-AC theory (non-steady state) in which resonance occurs between the transient phenomenon in the power supply circuit and the transient phenomenon in the power receiving circuit due to the natural harmonic oscillations. However, the invention proposed in Patent Document 2 is a technology capable of wireless transmission at the kWs=1 kJ level, developed for electric vehicles, and is therefore not suitable for short-term wireless rapid charging of enormous amounts of energy at the 721 MJ level. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] US Patent Application Publication No. 2008 / 0278264 [Patent Document 2] World Intellectual Property Organization International Bureau International Publication No. 2020 / 039594 Brochure

[0007] [Non-Patent Document 1] Masamichi Ogasawara, "Energy Conservation and the Environment in Railways," Journal of the Institute of Electrical Engineers of Japan, Vol. 127, No. 4, (2007), pp. 222-225 Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above problems, the present invention aims to provide a railway vehicle that does not require pantographs or overhead wires, a station facility equipped with a wireless power supply device that can safely supply the large amount of electromagnetic energy required for the operation of this railway vehicle for a short period of time, such as during a stoppage of about 30 seconds, and a parallel transmission system that can safely supply electromagnetic energy from the wireless power supply device in the station facility to a power receiving device in the railway vehicle in a short period of time without contact. [Means for solving the problem]

[0009] A first aspect of the present invention is a railway vehicle comprising: (a) a car body; (b) an electric motor that generates a propulsive force required for the vehicle to operate; (c) a distributed energy storage boost system having a plurality of storage batteries that are distributed around the car body so as to store electromagnetic energy at a predetermined charging voltage, and that performs an integrating and adding process of the charging voltages to boost the charging voltage to a drive voltage required to drive the electric motor; and (d) a plurality of inductive power receiving panels that are distributed on the roof or in the ceiling cavity of the car body and that face each of the positions of a plurality of inductive power supply panels that are disposed outside the car body at a distance from the car body in a one-to-one relationship, and that receive electromagnetic energy from the plurality of inductive power supply panels outside the car body in a contactless manner and supply the received electromagnetic energy to the plurality of storage batteries.

[0010] A second aspect of the present invention relates to a station facility that supplies electromagnetic energy in parallel to a railway vehicle having a distributed power storage boost system in which a plurality of inductive power receiving panels are distributed in a ceiling cavity or on a roof, the plurality of inductive power receiving panels supply electromagnetic energy to a plurality of storage batteries, and the distributed power storage boost system performs integration and addition processing of the charging voltages of the plurality of distributed storage batteries. That is, the station facility according to the second aspect of the present invention includes: (a) a boarding and alighting area that assists passengers in moving to and from the passenger compartment of the railway vehicle when the railway vehicle enters the line and stops, (b) a plurality of inductive power feeding panels that are distributed above the boarding and alighting area and that face the positions of the plurality of inductive power receiving panels in a one-to-one relationship when the railway vehicle stops, and that face each of the plurality of inductive power receiving panels, and (c) a plurality of coil current supply circuits that periodically switch between two transient response states for each of the power feeding coils constituting the plurality of inductive power feeding panels to supply synchronized coil currents to each of the power feeding coils.

[0011] A third aspect of the present invention is summarized as a parallel transmission system including: (a) a railway vehicle having a car body and an electric motor that generates a propulsive force required for the vehicle operation of the car body; (b) a distributed energy storage boost system having a plurality of storage batteries that are distributed around the car body so as to store electromagnetic energy at a predetermined charging voltage, and that performs an integrating and adding process of the charging voltages to boost the charging voltage to a drive voltage required to drive the electric motor; (c) a plurality of inductive power receiving panels that are distributed around the ceiling cavity or on the roof of the car body and supply electromagnetic energy to the plurality of storage batteries; (d) a plurality of inductive power supply panels that are distributed above platforms that assist passengers in moving to and from the passenger compartment of the railway vehicle when the railway vehicle enters a line and stops, and that face the positions of the plurality of inductive power receiving panels in a one-to-one relationship when the railway vehicle stops, and that face each of the plurality of inductive power receiving panels; and (e) a plurality of coil current supply circuits that periodically switch between two transient response states for each of the power supply coils that make up the plurality of inductive power supply panels to supply synchronized coil currents to each of the power supply coils that make up the plurality of inductive power supply panels. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a railway vehicle that does not require pantographs or overhead wires, a station facility equipped with a wireless power supply device that can safely supply the large amount of electromagnetic energy required for the operation of this railway vehicle for a short period of time, such as during a stoppage of about 30 seconds, and a parallel transmission system that can safely supply electromagnetic energy from the wireless power supply device in the station facility to the power receiving device of the railway vehicle in a short period of time without contact. [Brief explanation of the drawings]

[0013] [Figure 1A] 1 is a schematic diagram illustrating an example of a schematic structure of a parallel transmission system according to a first embodiment of the present invention. [Figure 1B] 2 is a schematic bird's-eye view illustrating an example of the arrangement of power receiving coils in a railway vehicle of the parallel transmission system shown in FIG. 1. FIG. [Figure 1C] 3 is a schematic cross-sectional view illustrating a cooling mechanism for the power receiving coil shown in FIG. 2 and placed in the ceiling cavity of the railway vehicle. FIG. [Figure 1D] 3 is a schematic diagram illustrating a structural example in which each of a plurality of inductive feeder panels is fixed to the ceiling of a station facility in the parallel transmission system according to the first embodiment. FIG. [Figure 2A] 1 is a circuit diagram showing an outline of a primary-side circuit network and a secondary-side circuit network that constitute an example of a parallel transmission system according to a first embodiment. [Figure 2B] 2B is an example of an equivalent circuit of a battery as a load of the circuit shown in FIG. 2A. [Figure 3A] FIG. 1 is a schematic diagram illustrating the technical concept of boosting the charging voltage of batteries distributed across an electric train consisting of p cars to the driving voltage of the electric motors using a battery control circuit in a parallel transmission system according to the first embodiment, in which four batteries are arranged in each of the first and pth railway cars. [Figure 3B] 1 is a circuit diagram showing an outline of a primary-side circuit network and a secondary-side circuit network that constitute an example of a parallel transmission system according to a first embodiment. [Figure 4A] FIG. 1 is a circuit diagram illustrating the technical idea of ​​boosting a charging voltage by a distributed power storage boost system using a battery control circuit of a parallel transmission system according to a first embodiment, and driving a variable voltage variable frequency inverter. [Figure 4B] 4B is a circuit diagram illustrating the operation of a group of switches at a lower voltage level that constitutes the hierarchical structure of voltage levels in the distributed energy-storage boost system shown in FIG. 4A. FIG. [Figure 4C] 4C is a circuit diagram illustrating another aspect of the operation of the group of switches at the lower voltage level shown in FIG. 4B. FIG. [Figure 4D] 4B and 4C. FIG. 4C is a circuit diagram illustrating yet another aspect of the operation of the lower voltage level switches. [Figure 4E] FIG. 5 is a circuit diagram illustrating a group of switches at an intermediate voltage level that constitutes the hierarchical structure of the distributed energy-storage boost system in the integrated boosting process of the charging voltage following the embodiments of FIGS. 4B to 4D. [Figure 4F] FIG. 4D is a circuit diagram illustrating a group of switches of output voltage levels that constitute the hierarchical structure of the distributed energy-storage boost system in the integrated boost process of the charging voltage following FIG. 4C. [Figure 5A] 10 is a schematic diagram illustrating an electromagnetic shield layer disposed above a platform or boarding area (walkway or platform) of a station facility so as to shield the area below the power feeding coil L1aj in the parallel transmission system according to the first embodiment. FIG. [Figure 5B] 5B is a schematic diagram illustrating an aspect in which the magnetic circuit is locally restricted by the electromagnetic shield layer shown in FIG. 5A, thereby providing electromagnetic shielding. FIG. [Figure 6] FIG. 10 is an example of a schematic diagram showing a schematic structure of a parallel transmission system using multiple coils according to a second embodiment of the present invention. [Figure 7A] FIG. 10 is a circuit diagram showing an outline of a multiple coil on the primary side circuit network side and a secondary side circuit network that constitute an example of a parallel transmission system using multiple coils according to a second embodiment. [Figure 7B] FIG. 10 is a circuit diagram showing another example of the multiple coils on the primary side circuit network side in the parallel transmission system using multiple coils according to the second embodiment. [Figure 7C] 10 is a plan view showing a multiple coil pattern in which spirals of a second power feed coil are nested so as to fill gaps in the spirals of a first power feed coil in a parallel transmission system according to a second embodiment. FIG. [Figure 8] 10 is a graph showing the relationship between the amount of power transmitted by multiple coils used in the parallel transmission system according to the second embodiment and time. [Figure 9A] FIG. 10 is a schematic diagram illustrating that a power supply unit used in a parallel transmission system according to a third embodiment of the present invention is configured by arranging a plurality of multiple coils closely to each other. [Figure 9B] 10 is a schematic diagram illustrating another aspect of the power supply unit configured by closely arranging a plurality of multiple coils used in the parallel transmission system according to the third embodiment. FIG. [Figure 9C] 10 is a schematic bird's-eye view illustrating how mutual induction occurs when a plurality of multiple coils are arranged close to each other in a parallel transmission system according to a third embodiment. FIG. [Figure 9D] 10 is a graph showing the relationship between the amount of power transmitted by a power supply unit used in the parallel transmission system according to the third embodiment and time. [Figure 10A] FIG. 10 is a schematic diagram illustrating a manner in which a primary-side switching element drive circuit inputs a step current to each power supply coil of a power supply unit in a parallel transmission system according to a third embodiment via a primary-side switching element group formed of a set of multiple drive elements, thereby generating wavelet-shaped electromagnetic energy through a transient response. [Figure 10B] FIG. 10 is a schematic diagram illustrating the technical idea of ​​a parallel transmission system according to a third embodiment, in which four power supply units are arranged in positions corresponding to the power storage units of the lead and pth railway cars, and the charging voltage of the power storage units distributed across an electric train consisting of p cars is boosted to the driving voltage of the electric motors by a battery control circuit. [Figure 11A] FIG. 10 is a circuit diagram showing, as an example, a configuration in which both the power feeding unit and the power receiving unit are configured with multiple coils arranged closely together in a parallel transmission system according to a fourth embodiment of the present invention. [Figure 11B] FIG. 10 is a circuit diagram illustrating the technical idea of ​​boosting the charging voltage by a distributed power storage boost system using a battery control circuit to drive a variable voltage variable frequency inverter in a parallel transmission system according to a fourth embodiment. [Figure 12]FIG. 10 is a circuit diagram showing an outline of a power supply unit, a power receiving unit, a power storage unit, and a battery control circuit that constitute an example of a parallel transmission system according to a fifth embodiment of the present invention. [Figure 13] FIG. 13 is a schematic diagram illustrating a simplification of the wiring topology when a primary-side switching element drive circuit inputs step currents to a large number of power feeding coils that constitute a power feeding unit via a primary-side switching element group formed by a set of multiple drive elements in a parallel transmission system according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] Next, first to sixth embodiments of the present invention will be described as representative examples with reference to the drawings. In the following description of the drawings, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each component, etc., differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined with reference to the following explanation. Furthermore, it goes without saying that the drawings also include parts with different dimensional relationships and ratios.

[0015] Furthermore, the first to sixth embodiments described below are merely examples of devices and methods embodying the technical concept of the present invention, and the technical concept of the present invention does not limit the materials, shapes, structures, arrangements, etc., of the components described below. The technical concept of the present invention can be modified in various ways within the technical scope defined by the claims. Furthermore, the directions of "left and right" and "up and down" in the following description are merely defined for the sake of convenience and do not limit the technical concept of the present invention. Therefore, for example, if the page is rotated 90 degrees, "left and right" and "up and down" are read interchangeably, and if the page is rotated 180 degrees, "left" becomes "right" and "right" becomes "left." Similarly, the direction of the spiral as shown in FIG. 1B is merely selected for the sake of convenience; it is also possible to select a right-handed spiral as a counterclockwise spiral and vice versa depending on the actual design circumstances.

[0016] (First embodiment) In the parallel transmission system according to the first embodiment of the present invention, p railway cars 311, 312, 313, ..., 31 as shown in FIG. p (In FIG. 3A, due to space limitations, illustration of railway cars 312 and 313 is omitted.) In the parallel transmission system according to the first embodiment, as shown in FIG. 1A, a specific railway car 31 k Body 31a k Wavelet-shaped electromagnetic energy is applied to the vehicle body 31a without contact. k Power is supplied from an external power supply device 29a using natural vibration harmonics. "Natural vibration harmonics" refers to a phenomenon equivalent to double resonance in AC theory, whereby resonance occurs between the power supply circuit and the power receiving circuit due to the harmonization of the natural vibration caused by the natural angular frequency of the transient phenomenon of the power supply circuit and the natural vibration caused by the natural angular frequency of the transient phenomenon of the power receiving circuit. In Figure 1A, the subscripts "j" and "k" are positive integers greater than or equal to 1.

[0017] That is, in FIG. 1A, railway cars 311, 312, 313, . . . , 31 p When an electric train consisting of 31 railcars entered the station, k The cross section of the landing area that supports the movement of passengers to the cabin of the passenger compartment is shown by hatching from left to right. j and railway vehicles with a specific suffix "k" 31 k Body 31a k As can be seen from FIG. 3A, the plurality of power receiving devices 27a j Specific railway vehicles 31 k Body 31a k Therefore, the parallel transmission system according to the first embodiment is k The power is supplied from an external power supply device 29a to a plurality of power receiving devices 27a that are periodically distributed. j This is a multi-channel (multi-path) contactless power transmission system in which wavelet-like electromagnetic energy is supplied in parallel to the power source without contact using natural vibration harmonics.

[0018] As can be seen from Fig. 1A, in this specification, the meaning of the term "car body" is defined as a comprehensive concept including the bogie (or bogie device) portion shown in the lower part of Fig. 1A. Also, as can be seen from Fig. 3A, the car body of a railway vehicle is made up of multiple bogies and structures mounted on the multiple bogies, but in this specification, the number of bogies included in the car body may be arbitrary. As is well known, a bogie is equipped with wheels, and further equipped with electric motors for driving the wheels, inverters and LC filter circuits for driving the electric motors, brake shoes and brake control devices for applying braking force to the wheels, and spring mechanisms, etc., are also arranged, but these are not shown in Fig. 1A. In reality, it is a complex structure with wiring and piping connecting the electric motors inside the bogie and the signal lines of the speed detector to the structures above the bogie, but in Fig. 1A, the power receiving coil L 2aj From, load 6 j Only the wiring leading to the storage battery as the load 6 in FIG. 1A is shown, and the other wiring is omitted. j is the equivalent circuit of the battery X Leq It is expressed as:

[0019] Passenger car body 31a k In addition to the body of the electric train with p cars shown in FIG. 3A, it can also be the body of a streetcar. If it is a deficit line or a streetcar, the maximum value of the subscript k is k max =1 to 2, and for a single-car tram, the maximum value is k max = 1. In subways, etc., p=k max On the other hand, on the JR Yamanote Line and Keihin Tohoku Line, p=k max =10~11. Also, on the Tokaido Line, k max =15 electric trains are also in operation. One car body 31a k Four power receiving devices 27a j If you place max =4k max Next, one car body 31a k 8 power receiving devices 27a j If you place j max =8k maxThe model diagram in Fig. 3A shows an example of the arrangement of power supply devices corresponding to the case where four power receiving devices are arranged on the lead railway car 311, but this is merely an example and is not limited to four power receiving devices or power supply devices. Note that the model diagram in Fig. 3A illustrates an electric train with a distributed power system in which some or all of the passenger cars are powered cars, but the electric train according to the first embodiment of the present invention may also be an electric train with a concentrated power system in which an electric locomotive pulls or propels other non-powered cars.

[0020] "Wavelet-like electromagnetic energy" does not refer to a steady sine wave of the same amplitude as in AC theory, but rather refers to a packet of electromagnetic energy having time-localized vibration characteristics (transient response characteristics) as shown in equations (11), (13), (14), (16), (22), (24), etc. j is load 6 j (Storage battery C sj The parallel transmission system according to the first embodiment includes a power receiving device 27a j and a power supply side operation unit 33 connected to the power supply device 29a and sending commands to the power supply device 29a.

[0021] In FIG. 1A, a specific (j-th) power supply coil L constituting the power supply device 29a 1aj and a specific (kth) vehicle body 31a k The specific (j-th) receiving coil L 2aj are parallel to each other in the effective transmission area (active area) of the contactless power transfer, and the power transfer coil L 1aj From receiving coil L 2aj The wavelet-shaped electromagnetic energy is transmitted to the receiving coil L 2aj 1A is a schematic diagram illustrating the transmission of power from a power supply coil L 1aj Inductive power supply board (electromagnetic inductive power supply board) 12, which is housed in a disk-shaped dielectric j This inductive power supply board 12 j is installed on the ceiling beams of the platform above the platform, and when a train enters the station facility, jIn some cases, the inductive feeder board 12 j Inductive power receiving board 11 j Focusing on the first car body 31a1 in FIG. 3A, the car body 31a1 is equipped with a plurality of storage batteries C s1 ,C s2 ,C s3 ,C s4 That is, each of the car bodies 31a k Multiple storage batteries C sj A plurality of inductive receiving boards 12 corresponding to j are sequentially arranged, so that when a train enters the line, multiple inductive power receiving panels 11 j A plurality of inductive feeder boards 12 are provided in a one-to-one relationship facing the respective positions of the j are sequentially distributed and placed.

[0022] In the parallel transmission system according to the first embodiment based on the non-AC theory, a plurality of inductive power receiving boards 11 j A plurality of inductive power supply boards 12 corresponding to each of the j The distance between each of the surfaces L T Therefore, the transmission efficiency does not change significantly with the change of the inductive power supply board 12 j 1D, high transmission efficiency can be achieved even if each of the inductive power receiving panels 11 is fixed to the ceiling 91 of the station facility, etc. j For each of the j In the case where the power supply device 29a of the parallel transmission system according to the first embodiment is configured to be movable toward each other up to a predetermined inter-surface distance, as shown in FIG. j Equipped with a power supply coil L 1aj and receiving coil L 2aj A distance control mechanism 32 for controlling the distance between the j An example of a structure that includes the distance control mechanism 32 is shown below. jIn practice, a link mechanism (not shown) equipped with an actuator may be separately provided in the station facility as a precision movement control mechanism. That is, when a railway vehicle enters the station facility and approaches and stops at a platform, the link mechanism moves the power supply device 29a from a position above the platform to the vehicle body 31a by performing coarse horizontal movement, coarse vertical movement, and tilting movement. k Furthermore, the power supply device 29a can approach the vicinity of the roof of the 1aj Power supply current and interval control mechanism 32 j The drive control circuit 34a is mainly composed of a drive control circuit 34a for controlling the inductive power supply board 12, and a transmission data storage device 342a and a program storage device 342b connected to the drive control circuit 34a. j Transmission current (power supply current) flowing through and interval control mechanism 32 j Furthermore, the drive control circuit 34a may control the link mechanism.

[0023] On the railway vehicle side, an inductive power receiving panel (electromagnetic inductive power receiving panel) 11 j The receiving coil L 2aj is an inductive power supply board 12 in which several units are periodically arranged in the station facilities. j In FIG. 1B, the inductive power supply board 12 j Although the illustration is omitted, the inductive power receiving panel 11 j The receiving coil L 2aj is the body of a railway vehicle 31a k Each ceiling cavity 30a k As described above, the "car body 31a" of the present invention k The term "car body" includes the bogie portion, and does not distinguish between the bogie and the structure on the bogie, such as the passenger compartment. However, in FIG. 1B, the bogie portion is omitted for convenience, and only the car body 31a k Similarly, the inductive power supply board 12 j Although the illustration of the receiving coil L is omitted, in FIG. 1C 2aj is the body of a railway vehicle 31a k Each ceiling cavity 30a k 2, inductive power supply board 12 j1B and 1C are examples of the structure of the railway vehicle according to the first embodiment, and do not limit the parallel transmission system according to the first embodiment. For example, as shown in FIG. 1D, an inductive power supply board 12 j The receiving coil L 2aj and inductive receiving board 11 j Body 31a k may be placed on the roof of

[0024] An example of a subway station premises is a structure in which the height above a platform 92 as shown in FIG. 1D is a stepped structure with a dropped ceiling 91 that is lower than the height above the railway. In this dropped ceiling type station facility, a track space 95 is provided in the raised ceiling. That is, a wall surface 94 is connected to the ceiling surface of the raised ceiling so as to be perpendicular to it as shown in FIG. 1D, and the track space 95 is defined between a safety door 93 provided at the end of the platform 92 and the wall surface 94. Then, the electric train car body 31a is placed in the track space 95. k When the train entered the station, car body 31a k Inductive power receiving panel 11 installed on the roof of j Inductive power supply board 12 is placed opposite j are provided on the inclined side walls of the ceiling 91.

[0025] The MIT method described in Patent Document 1 is based on AC theory, which matches the resonant frequency 2π√LC of the power supply resonant circuit (LC circuit) in AC theory with the resonant frequency 2π√LC of the power receiving resonant circuit (LC circuit) in AC theory. However, the resonant frequency in AC theory relies on a high Q value. If the Q value of the resonant circuit is high, the transmission conditions when transmitting wireless power from the power supply resonant circuit to the power receiving resonant circuit are limited to an extremely narrow range. In contrast to the technology relying on a high Q value of the MIT method, the parallel transmission system according to the first embodiment, which relies on natural vibration harmonics, has an extremely wide range of transmission conditions when transmitting wireless power from the power supply resonant circuit to the power receiving resonant circuit. First of all, there is no concept of a Q value in AC theory regarding the natural vibration of the transient phenomenon of the power supply circuit and the natural vibration due to the transient phenomenon of the power receiving circuit. Therefore, in the parallel transmission system according to the first embodiment, the transmission distance (surface-to-surface distance) L T The dependence on

[0026] Here, depending on the number of passengers, the balance of passenger positions in the passenger compartment, or the station conditions, the transmission distance (surface distance) L T Even if such a unique railway situation exists, it is necessary to consider the fact that the inductive feeder panel 12 is attached to the inclined side wall of the ceiling 91 as shown in FIG. j and fix the body 31a k The distance from the end of the platform 92 at the position fluctuates from moment to moment, and the transmission distance L T Even in a situation where the transmission distance L varies, the parallel transmission system according to the first embodiment can always achieve high transmission efficiency. T = 1 m, due to the circumstances specific to railways, T This method has the advantage over the MIT method in that it can achieve high wireless transmission efficiency even in situations where the signal is unstable and fluctuating.

[0027] When considered in correspondence with the model diagram of FIG. 3A, the passenger car body 31a k Ceiling cavity 30a k Each has four receiving coils L 2ajCeiling cavity 30a k are arranged in the vehicle body 31a. k The roof of the vehicle is made of a dielectric material with high tensile strength, specific tensile strength, Charpy impact value, and Young's modulus, such as fiber reinforced plastic (FRP), polypropylene (PP), or polyethylene (PE). k The roof of the 2aj The area above the position where the receiving coil L is placed should be a dielectric. 2aj Body 31a k When placing it on the roof of the car body 31a k The roof may be made of a light alloy such as an aluminum alloy.

[0028] Inductive power receiving board 11 j The receiving coil L 2aj Ceiling cavity 30a k and is disposed near the air conditioning duct of the vehicle body 31a. k Blower 26a installed in the air conditioning duct while the vehicle was stopped j Therefore, the receiving coil L of the air conditioning duct 2aj As shown in FIGS. 1A and 1C, a movable plate 25 j and switching driver 24 j The vehicle body 31a is provided with k When the train stops, the opening and closing driver 24 j Movable plate 25 j is opened, and the blower 26a j The cooling air is received from the air conditioning duct through the coil L 2aj Inductive power supply board 12 j From inductive power receiving board 11 j Electromagnetic energy is transmitted to the vehicle body 31a without contact. k During the stop time, the inductive power supply board 12 j From inductive power receiving board 11 j After the contactless power transmission is completed, the switching driver 24 j Movable plate 25 j is closed or opened, and the air from the air conditioning duct is blown only into the passenger compartment.

[0029] As shown in Figure 1C, the inductive power receiving board 11 j The receiving coil L 2aj Similarly, as shown in FIG. 5A, the electromagnetic shield layer 48 is provided below the power supply coil L 1aj The electromagnetic shield layer 48 is arranged so as to shield the area below the shielding casing 49. The term "boarding / alighting area" as used herein refers to a platform structure such as a platform on the JR Yamanote Line or a subway, or a structure at approximately the same level as the ground, such as a streetcar. The electromagnetic shield layer 48 is made of a high-permeability material such as ferrite, permalloy, supermalloy, anisotropic silicon steel, sendust, or permendur. Figure 5B shows a schematic diagram of a magnetic circuit formed by the electromagnetic shield layer 48, which is made of a high-permeability material and housed inside the shielding casing 49. While the magnetic field lines are not shown in Figure 1C, the magnetic field lines are not shown in the side ceiling panels 72. k and central ceiling panel 71 k By forming a composite plate structure in which an electromagnetic shield layer 48 made of a high magnetic permeability material is bonded on top of the power supply coil L 1aj and receiving coil L 2aj The distribution of magnetic field lines from the ceiling panel 72 is limited to the inside of the electromagnetic shield layer 48, preventing a strong magnetic field from reaching the inside of the passenger compartment. k The end side of the support bone 73a k By body 31a k Similarly, the central ceiling panel 71 to which the electromagnetic shielding layer 48 is bonded is suspended from the rafters supporting the roof. k The end side of the support bone 73b k By car body 31a k It is suspended from the rafters that support the roof of the central ceiling panel 71 k There are 74 handrails in the lower passenger compartment. i is suspended.

[0030] Drive control circuit 34a and power receiving device 27a j and the power supply coil L 1aj and receiving coil L 2ajIn the embodiment shown in FIG. 1A, the distance control mechanism 32 is used to transmit and receive wavelet-shaped electromagnetic energy to and from each other using the phenomenon of natural vibration harmonics. j is a tilting mechanism that moves up and down in an oblique direction, and various well-known mechanisms can be used, such as a hydraulic tilting mechanism, an electromagnet tilting mechanism, or a mechanism that rotates a ball spiral with a step motor. 1aj Inductive power supply board 12 j is omitted, and the power coil L 1aj It is possible to use the power coil L in a bare state. Although it is a matter of definition, it is possible to use the power coil L in a bare state, consisting of only a frame, so that it is in a skeleton state. 1aj The space surrounding the j In FIG. 1A, the receiving coil L 2aj Also, an inductive receiving board 11 made of a disk-shaped dielectric j Although the example shows a configuration in which the receiving coil L 2aj Inductive power receiving panel 11 that houses j is omitted and the receiving coil L 2aj It can be used in a bare state. It is composed of only a frame and is almost bare, so that it is in a skeleton state. 2aj The space surrounding the "inductive receiving board 11 j " becomes.

[0031] The natural vibration of the power supply resonant circuit and the power receiving resonant circuit is harmonized to the power supply coil L 1aj From receiving coil L 2aj The inductive feeder boards 12 are facing each other in the effective transmission area, which is the main stage of the natural vibration harmonic power supply. j and inductive receiving board 11 j This defines the "power transmission board set (11, 12)" according to the first embodiment. 1aj And this power supply coil L 1aj The receiving coil L is parallel to the main surface that defines the effective transmission area of 2aj The paired power transmission panel set (L 1aj ,L 2ajThat is, the power transmission board set (L 1aj , L2) are multiple power supply coils L 1aj and these multiple power supply coils L 1aj A plurality of receiving coils L having main surfaces facing parallel to the main surfaces of 2aj and a plurality of power supply coils L 1aj to multiple receiving coils L 2aj The structure is parallel, with each pair forming a pair so that power can be transmitted in parallel without contact.

[0032] In Figure 1A, the inductive feeder board 12 j The underside of the inductive receiving board 11 j The inductive feeder board 12 is placed parallel to the top surface of the j The inductive power supply panel 12 is installed above the platform of the railway station facility. j The case where the bottom surface of the inductive power receiving panel 11 is inclined with respect to the horizontal plane is shown, but it is merely an example. j Depending on the orientation of the main surface (top surface) of the inductive feeder board 12 j The direction of the main surface (bottom surface) of the inductive power receiving board 11 can be selected arbitrarily. j If the main surface of the inductive feeder board 12 is horizontal, j The main surface of the car body 31a is also horizontal. k While the train was stopped, several inductive power receiving panels 11 j In a one-to-one relationship, a plurality of inductive feeder boards 12 are provided at each of the positions of the j By facing each other, the vehicle body 31a k Multiple inductive power receiving boards mounted on the j Electromagnetic energy is supplied in parallel to the load 6 through multiple channels using natural vibration harmonics. j is expressed as the equivalent circuit X shown in Figure 2B. Leq The storage battery C is expressed as sj and the inductive power receiving board 11 j In the model diagram of FIG. 3A, the vehicle body 31a stores electromagnetic energy supplied by the natural vibration harmonics. j There are four storage batteries C sj In this example, four storage batteries C are arranged in the first car body 31a1. s1 ,Cs2 ,C s3 ,C s4 Each car body 31a k Storage batteries C are distributed sj The charging voltage V of the electromagnetic energy stored in Csj 3A, the battery control circuit (BMS) 41 performs the voltage conversion process illustrated in FIGS. 4B to 4F, and boosts the voltage to the desired drive voltage of the motor 44 as shown in the following equation (3c). Although not shown, an in-car LAN is installed in the electric train as is well known. Therefore, the storage battery C, which serves as the terminal device of the battery control circuit 41, s1 ,C s2 ,C s3 ,C s4 The storage batteries can be connected to a central processing unit (not shown) via an in-vehicle LAN, but dedicated wiring for the battery control circuit 41 may also be used.

[0033] For example, a positive integer n=j max Assuming that the voltage E of the DC power supply 5 shown in FIG. 2A is V1, the storage battery C sj Charging voltage V Csj =V1 is stored in the n storage batteries C distributed throughout the vehicle. sj The charge voltage V stored in Csj If we add =V1, ΣV Csj =nV1……(1) Therefore, even if the voltage E=V1 of the DC power supply 5 is set to a low voltage, by selecting a positive integer n, the value of nV1 in equation (1) can be boosted to a desired drive voltage for the motor 44, such as a DC voltage of 600V to 1500V currently supplied to the variable voltage variable frequency (VVVF) inverter. For this reason, as shown in FIG. 4A, the variable voltage variable frequency (VVVF) inverter 43 drives the motor 44, and the railcars 311, 312, 313, ..., 314 that make up an electric train consisting of p cars are driven by the variable voltage variable frequency (VVVF) inverter 43. p can operate the vehicle (p=k maxis a positive integer of 1 or more.) The variable voltage variable frequency inverter 43 and the electric motor 44 are used to drive the railway cars 311, 312, 313, ..., 31 p It is sufficient that the above-mentioned system is provided only on specific railway vehicles among the above-mentioned three railway vehicles, and not on all railway vehicles 311, 312, 313, ……, 31 p There is no need to be prepared for this.

[0034] Each railway car that makes up an electric train31 k Each of these has m (m is a positive integer greater than or equal to 1) storage batteries C sj If these are periodically distributed, the value of n in equation (1) becomes n= n rvs =m×p ……(2) 2A shows an example of a single-stage (single) spatial power transmission circuit in which the power supply-side resonant circuit and the power receiving-side resonant circuit are magnetically coupled, while FIG. 3B shows a parallel connection of n stages that constitutes a spatial power transmission circuit network. A power supply-side operation unit 33 is installed at the boarding and alighting area, and by operating the power supply-side operation unit 33, a power supply start signal indicating the start of power supply or a power supply stop signal indicating the stop of power supply is output to the drive control circuit 34a.

[0035] As shown in Figure 4A, n storage batteries C sj The distributed power storage boost system 4a is configured with a group of switches distributed in an electric train as shown in Figs. 4B to 4F. Fig. 4B shows the voltage level hierarchy of the storage batteries Csa (1 to 4) that make up the lower-level battery group Csa (1 to 4) of the first voltage level (lower-level voltage level) when the total number of batteries n is 64. s1 ,C s2 ,C s3 ,C s4 And these storage batteries C s1 ,C s2 ,C s3 ,C s4The diagram shows the connection relationship of the changeover switches (two-way switches) S1, S2, S3, and S4 corresponding to the lower layer battery group Csa (1 to 4). Although not shown in the figure, first, the changeover switches S1, S2, S3, and S4 are each set to the cutoff state (open state), and the storage battery Csa is connected to the space power transmission circuits of the first to fourth stages. s1 ,C s2 ,C s3 ,C s4 That is, the power supply coil L shown in FIG. 1a1 From receiving coil L 2a1 Wavelet-shaped electromagnetic energy is transmitted through space to storage battery C s1 is charged to the charging voltage V1, and the power coil L 1a2 From receiving coil L 2a2 Wavelet-shaped electromagnetic energy is transmitted through space to storage battery C s2 is charged to the charging voltage V1.

[0036] Although not shown in FIG. 4B, the storage battery C s3 ,C s4 ,C s5 ,C s6 ,……,C s63 ,C s64 is similarly charged to the charging voltage V1. That is, although not shown in the figure, when i is a multiple of 4 that is equal to or greater than 8, the changeover switch S (i-3) ,S (i-2) ,S (i-1) ,S i are respectively set in a cutoff state (open state), and the storage batteries C of the other lower layer battery groups are connected by the space power transmission circuits of the (i-3)th stage to the ith stage. s(i-3) ,C s(i-2) ,C s(i-1) ,C s4 are charged to the charging voltage V1. 1an From receiving coil L 2an Wavelet-shaped electromagnetic energy is transmitted through space to storage battery C sn is charged to the charging voltage V1.

[0037] Battery C distributed among other lower-layer battery groups s1 ,Cs2 ,C s3 ,C s4 ,……,C s63 ,C s64 All distributed storage batteries C sj When each of the switches S1, S2, S3, and S4 is charged to the charging voltage V1, the switches S1, S2, S3, and S4 are all switched to the first conducting state (first closed state) as shown in FIG. 4B, and the two relay switches S m11 ,S m12 The relay switch S is also switched to the first conducting state (first closed state). m11 ,S m12 Although not shown, the changeover switch S of the other lower layer battery group is also a changeover switch (bidirectional switch). (i-3) ,S (i-2) ,S (i-1) ,S i are respectively set to the first conductive state, and the relay switches S of the other lower layer battery groups are set to the first conductive state. m1i-3) ,S m1(i-2) The changeover switches S1, S2, S3, S4 and the relay switch S m11 ,S m12 As shown in Figure 4B, s1 ,C s2 ,C s3 ,C s4 Since all of these are connected in series, the voltage of the lower battery group Va(1-4) is boosted to a voltage of 4V1. This also applies to the other lower battery groups Csa(5-8), Csa(9-12), and Csa(13-16). s(i-3) ,C s(i-2) ,C s(i-1) ,C s4 Since all of these are connected in series, the voltage is boosted to 4V1.

[0038] On the other hand, the changeover switches S1, S2, S3, and S4 are set to the second conductive state as shown in FIG. 4C, and the relay switch S m11 ,S m12 Also rotate clockwise to enter the second conduction state, and the battery C with the lower battery group voltage Va(1-4) s1 ,C s2 ,C s3 ,C s4All of the batteries are connected in parallel. s1 ,C s2 ,C s3 ,C s4 When all of the lower layer battery groups are connected in parallel, the voltage Va (1 to 4) of the lower layer battery groups is maintained at voltage V1. (i-3) ,S (i-2) ,S (i-1) ,S i Similarly, for (i-3) ,S (i-2) ,S (i-1) ,S i are connected in parallel, and relay switch S m1(i-3) ,S m1(i-2) If the battery is also switched to parallel connection, s(i-3) ,C s(i-2) ,C s(i-1) ,C s4 are all connected in parallel, and the voltage of the lower layer battery group Csa ([i-3] to i) is maintained at the charging voltage V1.

[0039] Furthermore, as shown in FIG. 4D, two relay switches S m11 ,S m12 When the changeover switches S1, S2, S3, and S4 are switched to the second conduction state while the battery C is in the first conduction state, s1 and C s2 Parallel connection of battery C s3 ,C s4 The parallel connections are connected in series. s1 and C s2 Parallel connection of battery C s3 ,C s4 By connecting the parallel battery group 1 to the series battery group 4, the voltage of the lower layer battery group Va (1 to 4) is boosted to a voltage 2V1. m1(i-3) ,S m1(i-2) While keeping the switch in the first conduction state, (i-3) ,S (i-2) ,S (i-1) ,S i When each of these is switched to the second conduction state, the battery C s(i-3) and C s(i-2) Parallel connection of battery C s(i-1) and Cs4 4B, 4C, and 4D, the voltage of the lower layer battery group Va(1 to 4) is increased to a voltage 2V1 by the configuration of the boost circuit and the switching of the connection relationship thereof shown in FIG. 4B, 4C, and 4D. Va(1~4)=ρ1·V1……(3a) The voltage is boosted as follows. The boost coefficient ρ1 on the right side of equation (3a) is ρ1 = 1, 2, 4. The layer battery group voltages Va([i-3]~i) of the other lower layer battery groups Csa([i-3]~i) can also be expressed in the same way as equation (3a).

[0040] 4E shows the lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16) that are distributed to form the intermediate boost layer Csa(1-16) of the second voltage level (intermediate layer voltage level) when the total number of batteries n is 64. Furthermore, FIG. 4E shows the intermediate layer changeover switches S corresponding to these lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16). 1-4 ,S 5-8 ,S 9-12 ,S 13-16 In FIG. 4E, the voltage of the dispersed lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16) is 4V1. 1-4 ,S 5-8 ,S 9-12 ,S 13-16 is in the first conductive state of FIG. 4E, and the relay switch S m11 ,S m12 If all of the lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16) are also in the first conduction state, the lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16) are all connected in series, and the intermediate boost layer voltage Va(1-16) is boosted to 16V1.

[0041] Although not shown, if i is a multiple of 16 that is equal to or greater than 32, the intermediate layer changeover switch S ([i-15]-[i-12]) ,S ([i-11]-[i-8]) ,S([i-7]-[i-4]) ,S ([i-3]-i) are in the first conductive state, and the relay switch S m11 ,S m12 When these are also placed in the first conduction state, the lower layer battery groups Csa([i-15]-[i-12]), Csa([i-11]-[i-8]), Csa([i-7]-[i-4]), and Csa([i-3]-i) are all connected in series, and the voltage of the intermediate boost layer Csa([i-15]~i) is also boosted to 16V1.

[0042] On the other hand, the middle layer switch S 1-4 ,S 5-8 ,S 9-12 ,S 13-16 4E, and the relay switch S m21 ,S m22 When the lower layer battery groups Csa(1-4), Csa(5-8), Csa(9-12), and Csa(13-16) are all connected in parallel, the intermediate boost layer voltage Va(1-16) remains at 4V1. ([i-15]-[i-12]) ,S ([i-11]-[i-8]) ,S ([i-7]-[i-4]) ,S ([i-3]-i) Regarding the middle layer switch S ([i-15]-[i-12]) ,S ([i-11]-[i-8]) ,S ([i-7]-[i-4]) ,S ([i-3]-i) are respectively set to the second connection state, and the relay switch S m2[i-15] ,S m2[i-11] When the second connection state is also switched to, the lower layer battery groups Csa([i-15]-[i-12]), Csa([i-11]-[i-8]), Csa([i-7]-[i-4]), and Csa([i-3]-i) are all connected in parallel, so the voltage of the intermediate boost layer Csa([i-15]~i) remains at 4V1.

[0043] In addition, the two relay switches S in Fig. 4E m21 ,S m22 While maintaining the first connection state, the middle layer changeover switch S 1-4 ,S 5-8 ,S 9-12 ,S13-16 When the two relay switches S are switched to the second connection state, the parallel connection of the lower layer battery groups Csa(1-4) and Csa(5-8) and the parallel connection of the lower layer battery groups Csa(9-12) and Csa(13-16) are connected in series, so the intermediate boost layer voltage Va(1-16) is boosted to a voltage of 8V1. m2[i-15] ,S m2[i-11] is kept in the first conductive state, and the middle layer changeover switch S ([i-15]-[i-12]) ,S ([i-11]-[i-8]) ,S ([i-7]-[i-4]) ,S ([i-3]-i) are switched to the second connection state, the parallel connection of the lower layer battery groups Csa([i-15]-[i-12]) and Csa([i-11]-[i-8]) and the parallel connection of the lower layer battery groups Csa([i-7]-[i-4]) and Csa([i-3]-i) are connected in series, so the voltage of the intermediate boost layer Csa([i-15] to i) is boosted to voltage 8V1. In other words, according to the configuration of the boost circuit shown in FIG. 4E and the switching of its connection relationship, the intermediate boost layer voltage Va(1 to 16) is Va(1~16)=ρ1·ρ2·V1……(3b) The boost coefficient ρ2 on the right side of equation (3b) is ρ2 = 1, 2, 4, and when the boost coefficient ρ1 = ρ2 = 4, the voltage is boosted to Va(1 to 16) = 16V1. The voltages Va([i-15] to i) of the other intermediate boost layers Csa([i-15] to i) can also be expressed in the same way as equation (3b).

[0044] 4F shows four intermediate boost layers Csa(1-16), Csa(17-32), Csa(33-48), and Csa(49-64) that are distributed to form an output stage boost layer Csa of the third voltage level (output voltage level) when the total number of cells n is 64. FIG. 4F further shows output layer changeover switches S corresponding to these intermediate boost layers Csa(1-16), Csa(17-32), Csa(33-48), and Csa(49-64). 1-16 ,S 17-32 ,S 33-48 ,S 49-64In the distributed energy storage boost system shown in FIG. 4F, the voltage of the distributed intermediate boost layers Csa(1-16), Csa(17-32), Csa(33-48), and Csa(49-64) is 16V1. The output layer changeover switch S 1-16 ,S 17-32 ,S 33-48 ,S 49-64 is in the first conductive state of FIG. 4F, and the relay switch S m31 ,S m32 are also in the first conduction state, the intermediate boosting layers Csa(1-16), Csa(17-32), Csa(33-48), and Csa(49-64) are all connected in series, so the drive voltage Va(1-64) is boosted to 64V1.

[0045] On the other hand, the output layer selector switch S 1-16 ,S 17-32 ,S 33-48 ,S 49-64 4F, and the relay switch S m31 ,S m32 When the relay switch S in FIG. 4F is also rotated clockwise to switch to the second connection state, the intermediate boost layers Csa(1-16), Csa(17-32), Csa(33-48), and Csa(49-64) are all connected in parallel, so the drive voltage Va(1-64) is maintained at 16V1. m31 ,S m32 While maintaining the first connection state, the output layer changeover switch S 1-16 ,S 17-32 ,S 33-48 ,S 49-64 When the parallel connection state is switched to the second connection state, the parallel connection of the intermediate boost layers Csa(1-16) and Csa(17-32) and the parallel connection of the intermediate boost layers Csa(33-48) and Csa(49-64) are connected in series, so the drive voltage Va(1-64) is boosted to a voltage of 32V1. That is, according to the distributed energy storage boost system shown in FIG. 4F, the drive voltage Va(1-64) of the output stage boost layers Csa(1-64) is Va(1~64)=ρ1·ρ2·ρ3·V1……(3c) The boost coefficient ρ3 on the right side of equation (3c) is ρ3 = 1, 2, 4, and when the boost coefficients ρ1 = ρ2 = ρ3 = 4, the drive voltage Va(1 to 64) is boosted to 64V1 for the voltage V1 of the DC power supply 5. For example, if the boost coefficients ρ1 = ρ2 = 4 and ρ3 = 2, the drive voltage Va(1 to 64) is boosted to 32V1, so the drive voltage Va(1 to 64) can be set in a variety of ways by selecting the boost coefficients ρ1, ρ2, and ρ3.

[0046] Battery C defined by formula (1) and formula (2) sj The number n of inductive power receiving boards 11 j The number of spiral coils constituting the vehicle body 31a can be interpreted as the number of planar or curved spiral coils constituting the vehicle body 31a. Here, "planar" refers to a curved surface whose Gaussian curvature and mean curvature are both zero (the radius of curvature is infinite). Therefore, a "planar spiral coil" is a spiral coil having a pattern similar to Archimedes' spiral that develops in two dimensions on a curved surface whose Gaussian curvature and mean curvature are both zero. On the other hand, a "curved spiral coil" is a coil having a pattern similar to a spiral or mosquito coil that develops on a curved surface whose Gaussian curvature and mean curvature are not both zero, such as a part of a cylindrical surface, a part of a spherical surface, a part of an ellipsoidal surface, or a part of a parabolic surface, but whose radius of curvature is large. For example, the vehicle body 31a shown in FIG. 1A k The spiral coil corresponds to a curved surface pattern such as an oval spiral or an oval-shaped mosquito coil that is deployed on a curved surface with a radius of curvature of about 1 m or less, such as a roof. However, a radius of curvature of 1 m is merely an example, and a spiral coil that is deployed on a curved surface with a radius of curvature of more than 1 m is also acceptable.

[0047] In equation (2), if m=8, p=11, and m receiving coils are periodically distributed on all railway vehicles, then n=n rvs However, if the number of trains to be installed is limited to eight, and m receiving coils are periodically distributed only on the limited number of trains, then n rvswe= 64. If the charging voltage V1 = 80V and the boost coefficients ρ1 = ρ2 = ρ3 = 2, then from equation (3c) the driving voltage Va(1~64) = 80 × 8 = 640V. If each spiral coil can transmit 500kWs = 500kJ of wavelet-shaped electromagnetic energy contactlessly using natural harmonic vibration, then the number of spiral coils n rvswe When the SI thyristor is 64, a total of 64 × 500 × 30 = 960 MJ of energy can be transmitted during a 30-second train stop. Since SI thyristors capable of passing pulse currents of 5 to 10 kA or more at voltages of 8 kV or more have already been developed, a spiral coil driving capacity of 500 kW can be easily achieved. The parallel transmission system according to the first embodiment eliminates the need for expensive AC power supply circuits such as switching power supplies, and allows for the use of inexpensive DC power supplies 5 with simple, compact structures. Therefore, even when a large amount of energy, such as 960 MJ or more, is required to power an electric train, the DC power supply 5 that serves as the basis for generating that energy can be prepared inexpensively and reliably. Therefore, station facilities equipped with highly reliable power supply equipment can be constructed inexpensively and easily. The physical configuration of the power supply equipment can be space-saving, allowing for greater flexibility in the placement of the power supply equipment within the station premises and facilitating system installation.

[0048] In the case of electric trains, the amount of energy required to transport one person per unit distance is said to be 209 kJ / person·km. Using this value, the number of spiral coils n in the parallel transmission system according to the first embodiment can be calculated as follows: rvsweIf we set ρ = 64, then during a 30-second stop, enough energy can be charged to transport 4,593 people for 1 km. Since the capacity of an 11-car Yamanote Line commuter train is 1,724 people, during a 30-second stop, enough energy can be charged to transport 1,724 people for 2.7 km. The longest distance between stations on the Yamanote Line is 2.0 km between Osaki and Shinagawa, but the average distance between stations is 1.15 km. Therefore, excess charging energy at short station intervals can be used to run electric trains with longer station intervals. Therefore, with the parallel transmission system of the first embodiment, even assuming a 200% occupancy rate for an 11-car Yamanote Line commuter train, a 30-second stop of the commuter train will provide sufficient charging capacity to operate the electric train.

[0049] The drive control circuit 34a controls the inductive power supply board 12 j For example, when a power supply start signal is input from the power supply side operation unit 33, the drive control circuit 34a controls the inductive power supply panel 12 so as to supply electromagnetic energy that oscillates at a set period. j The drive control circuit 34a controls the current of the power receiving device 27a. j The vibration characteristics of the electromagnetic energy returned from the inductive power supply board 12 are obtained. j and inductive receiving board 11 j The power receiving device 27a includes an arithmetic logic circuit (ALU) that performs processing to calculate the conditions under which the transmission efficiency is maximized by the natural vibration harmonic between the power receiving device 27a and the power receiving device 27a. j The secondary circuit 3a j The electromagnetic energy returned from the power supply capacitor C shown in Figure 2A 1j The charge / discharge voltage V between both ends of the power supply C1 Therefore, the power receiving device 27a j The information on the vibration characteristics of the power supply side capacitor C 1j The charge / discharge voltage V between both ends of the power supply C1 As described in Japanese Patent No. 7420671, the charging / discharging voltage V C1For example, by measuring load 6 j The power supply device 29a can also acquire information on the charging state of the power supply side charging / discharging voltage V C1 The power receiving device 27a obtained by measuring j The information on the passenger side can also be displayed on a device installed at the boarding / deboarding area, such as the power supply side operation unit 33. The transmission data storage device 342a and the program storage device 342b shown in FIG. 1A are connected to the ALU.

[0050] The drive control circuit 34a includes the primary-side switching element drive circuit 340a and the DC power supply 5 shown in FIGS. 2A and 3A to form a separately excited drive circuit. The DC power supply 5 may be provided external to the drive control circuit 34a. In the example shown in FIG. 2A, the drive control circuit 34a selects a separately excited drive timing for separately switching the switching element, i.e., the drive element Q1, and outputs a command to operate the primary-side switching element drive circuit 340a at the selected separately excited drive timing. The primary-side switching element drive circuit 340a sends a control signal to the control terminal of the drive element Q1 shown in FIG. 2A to separately drive the drive element Q1 on and off. If the drive element Q1 is a thyristor such as a field-effect transistor (FET), static induction transistor (SIT), gate turn-off thyristor (GTO), or static induction thyristor (SI thyristor), the gate electrode of the power semiconductor element corresponds to the "control terminal" of the drive element Q1. Figure 2A shows an example of an SI thyristor circuit marking as the driver element Q1. Around 1985, a single SI thyristor element was capable of switching at 2500V-300A, but around 2015, SI thyristors capable of passing pulse currents of 5kA or more at 25kV-50kV were developed. Furthermore, in 2019, SI thyristors capable of 5-10kA at 6kV were developed. However, the driver element Q1 is not limited to an SI thyristor. For example, if the driver element Q1 is a bipolar junction transistor (BJT), the base electrode of the BJT becomes the control terminal of the driver element Q1.

[0051] The ALU included in the drive control circuit 34a illustrated in FIG. 1A can be configured as a computer system using a microprocessor (MPU) implemented as a microchip. Alternatively, the ALU constituting the computer system can be a digital signal processor (DSP) with enhanced arithmetic operation functions specialized for signal processing, or a microcontroller (microcomputer) equipped with memory and peripheral circuits for embedded device control. Alternatively, the main CPU of a current general-purpose computer can be used as the ALU. Furthermore, some or all of the ALU configuration can be configured using a programmable logic device (PLD) such as a field programmable gate array (FPGA).

[0052] A computer system includes an ALU included in the drive control circuit 34a shown in FIG. 1A. In a computer system including the drive control circuit 34a, the transmission data storage device 342a can be any combination selected from a group including multiple registers, multiple cache memories, a main storage device, and an auxiliary storage device. The cache memory can also be a combination of a primary cache memory and a secondary cache memory, or it can have a hierarchy including a tertiary cache memory. When part or all of the ALU is configured using a PLD, the transmission data storage device 342a can be configured as a memory element, such as a memory block included in part of the logic block that constitutes the PLD. Furthermore, the ALU can have a structure in which a CPU-like array and a PLD-like programmable core are mounted on the same chip. This CPU-like array includes a hard macro CPU pre-installed in the PLD and a soft macro CPU configured using the PLD's logic blocks. In other words, a PLD can have a configuration in which software and hardware processing are mixed.

[0053] The basic configuration of the parallel transmission system according to the first embodiment shown in FIG. 1A can be expressed as a single-stage spatial power transmission circuit, which is the core of the system, as shown in FIG. 2A, with a set of a power supply-side resonant circuit and a power receiving-side resonant circuit. In reality, the parallel transmission system according to the first embodiment is a parallel connection of n stages that constitutes the spatial power transmission circuit network shown in FIG. 3B, and includes magnetic coupling circuits that are spatially connected in parallel in n stages. The power supply-side resonant circuit is a circuit topology that forms part of the power supply device 29a shown in FIG. 1A, and is composed of a primary-side switching element drive circuit 340a and a primary-side circuit 2a that constitute the drive control circuit 34a. j As shown in FIG. 2A, the power receiving side resonant circuit includes a secondary side circuit 3a j In the power supply side resonant circuit, the primary side circuit 2a surrounded by the dashed line is j The configuration excluding this part will be called the "coil current supply circuit."

[0054] Primary circuit 2a j The power supply resonant circuit of the first power supply capacitor C 1j , power supply capacitor C 1j The power supply capacitor C 1j The electrostatic energy sent from the power supply side is stored as magnetic energy, and this magnetic energy is transferred to the power supply side capacitor C 1j At the same time, the secondary circuit 3a j Receiving coil L 2aj The power supply coil L is magnetically coupled to the 1aj Primary side circuit 2a j and secondary circuit 3a j One stage magnetic coupling circuit (2a j ,3a j ) is configured. Primary side circuit 2a j and secondary circuit 3a j One stage magnetic coupling circuit (2a j ,3a j In the n-stage spatial power transmission network shown in FIG. 3B, n-stage magnetic coupling circuits are connected in parallel.

[0055] Primary circuit 2a jIn the power supply side resonant circuit, a DC power supply 5 and a driving element Q1 are connected in series with each other, and a power supply side capacitor C 1j One terminal of the driving element Q1 is connected to the high potential terminal (positive terminal) of the DC power supply 5. The DC power supply 5 supplies a constant DC voltage (power supply voltage) E0 to the power supply side resonant circuit. The power supply side capacitor C 1j One terminal of the driver element Q1 is connected to the other terminal of the power coil L 1aj The power supply capacitor C 1j The other terminal of the power supply coil L is connected to the connection node of the low potential side terminal (negative terminal) of the DC power supply 5. 1aj The other terminal of the power supply capacitor C 1j The DC power supply 5 is connected to the connection node of the low potential side terminal of the DC power supply 5 together with the other terminal of the power supply side resonant circuit when the driving element Q1 is conductive. 1j The driving element Q1 supplies a DC voltage to the primary circuit 2a j The driver Q1 operates on / off as a circuit element that limits the free damping oscillation of the power supply side resonant circuit. By limiting the free damping oscillation, the driver Q1 realizes a transient current-voltage change in the power supply side resonant circuit. The DC power supply 5 can be a pseudo-constant voltage source, or a DC power supply with a simple structure that is simply rectified and contains a large ripple component. Therefore, the control circuit and peripheral circuits can be simple, durable, easy to design, and an inexpensive DC power supply 5 can be used.

[0056] Secondary circuit 3a of the receiving-side resonant circuit j is the power coil L 1aj The power supply coil L 1aj receiving coil L that receives magnetic energy without contact from 2aj , receiving coil L 2aj The receiving coil L 2aj The receiving capacitor C converts the magnetic energy stored in the 2j The power receiving device 27a includes a power receiving side resonant circuit. j As shown in Figure 2A, the load side diode D2 and the load 6 jThe series connection circuit with the receiving side capacitor C 2j and receiving coil L 2aj are connected in parallel to each other.

[0057] In the circuit implementation shown in FIG. 2A, the power supply coil L 1aj In order to prevent the return current from the power supply 5 from flowing back to the DC power supply 5, a power supply side diode D1 is connected in series between the DC power supply 5 and the driving element Q1. 1aj To account for the return current from the power supply capacitor C, a return diode is connected in parallel as a protection element between the source and drain of the MOSFET used as the driving element Q1, but the return diode is not shown in Figure 2A. 1j is the electrostatic energy supplied from the DC power supply 5 and the power supply coil L 1aj The magnetic energy supplied as a return current from the power supply capacitor C is stored. 1j The voltage between both ends of the power supply side charge / discharge voltage V C1 Boosts the power supply coil L 1aj is the power supply capacitor C 1j The electrostatic energy sent from the power supply side is stored as magnetic energy, and this magnetic energy is transferred to the power supply side capacitor C 1j At the same time, the secondary circuit 3a j Receiving coil L 2aj and magnetically coupled to the secondary circuit 3a j The coil current supply circuit of the parallel transmission system according to the first embodiment supplies coil current by periodically switching between two transient response states, a "series-parallel transient response state" and a "series transient response state," which will be described below, and serves as the basis for natural vibration harmonics in each transient response state.

[0058] <Series-parallel transient response state> When the driving element Q1 is in a conducting state, the series circuit of the DC power supply 5 and the driving element Q1 located on the driving circuit side, and the primary side circuit 2a j The power supply capacitor C located 1j and power supply coil L 1ajThis LC parallel resonant circuit constitutes an "RLC series-parallel resonant circuit" in AC theory. In FIG. 2A, focusing on the RLC series-parallel resonant circuit (hereinafter simply abbreviated as "series-parallel resonant circuit"), the equivalent internal resistance of the DC power supply 5 on the power supply side resonant circuit side is indicated by r1. When the driving element Q1 is on, the DC power supply 5, the driving element Q1, and the power supply side capacitor C 1j and power supply coil L 1aj The closed circuit formed by the LC parallel resonant circuit constitutes the power supply side resonant circuit. The equivalent internal resistance r of the DC power supply 5 1j , the on-resistance r of the driver element Q1 on1j is used, the series resistance R 01ON teeth, R 01ON =r 1j +r on1j ……(4a) It can be expressed as:

[0059] In Figure 2A, the power supply capacitor C 1j is the parasitic resistance r p1j Also, the power supply coil L 1aj is the parasitic resistance r L1 The power supply side capacitor C is assumed to exist, but is not shown in the figure. 1j Parasitic resistance r p1j is small and r p1j ≪r L1 If this can be considered, the power supply side capacitor C 1j and power supply coil L 1aj In a parallel circuit, R L1 =r L1 ……(4b) A large resistance R can be expressed as L1 is the power coil L 1aj It exists only on the opposite side and forms a "series-parallel resonant circuit."

[0060] Power supply capacitor C 1j Parasitic resistance r p1jis large, and r p1j ≒r L1 If so, the power supply side capacitor C of the power supply side resonant circuit 1j and power supply coil L 1aj In a parallel circuit, R * 1ONLC =(r p1j ·r L1 ) / (r p1j +r L1 ) ……(4c) In terms of the equivalent circuit, R in equation (4c) * 1ONLC is the series resistance R in equation (4a) 01ON to R in equation (4c) * 1ONLC To include R * 01ON =r 1j +r on1j +(r p1j ·r L1 ) / (r p1j +r L1 ) ……(4d) Therefore, according to AC theory, the power supply resonant circuit has a series resistance R * 01ON This can be considered as a "series-parallel resonant circuit" having

[0061] When focusing on the series-parallel resonant circuit, the power supply side capacitor C 1j The transient capacitor current is i C1 , power coil L 1aj The transient coil current flowing through i L1 When the current supplied from the DC power supply 5 is i1, the transient response state of the power supply side resonant circuit when the driving element Q1 is in a conductive state is expressed as follows: 01ON and resistor R L1 in view of,

number

[0062] Differentiating both sides of equation (5c) with respect to time t, we get

number

number

[0063] α 2 ON12 ≪ω 2 ON1 Then, considering equation (9d), the power supply coil L 1aj The transient coil current i L1 teeth, i L1 =(E0 / R 01ON ){1-f 11 (t)} ……(11) However, on the right side of equation (11), f 11 (t)=exp(-α ON11 t){cos(β ON1 t)+(α ON11 / β ON1 )sin(β ON1 t)} ……(12) The coil current i L1 As shown in equation (11), the frequency β ON1The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α ON1 This results in a series-parallel transient response consisting of underdamped (damped oscillations) that decay exponentially at time t. The oscillations in this series-parallel transient response form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0064] f in equation (12) 11 Using (t), the power supply capacitor C 1j The transient current i C1 Similarly, from equation (6), i C1 =(E0 / R 01ON )f 11 (t) ……(13) The capacitor current i C1 As shown in equation (13), the frequency β ON1 The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α ON1 This results in a series-parallel transient response consisting of underdamped (damped oscillations) that decay exponentially at time t. The oscillations in this series-parallel transient response form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0065] As shown in the first term on the left side of equation (5c), the coefficient L 1aj Using the coil current i in equation (11), L1 By differentiating, the power supply coil L of the power supply side resonant circuit 1aj The voltage between the terminals V L1aj teeth, V L1aj =-(L 1aj E0 / R 01ON )g 11 (t) ……(14) The g on the right side of equation (14) is given by 11 (t) is g 11 (t)=[{(α ON11 ) 2 +(βON1 ) 2} / β ON1 ] exp(―α ON1j t)sin(β ON1 t) ……(15) The power coil L 1j The voltage between the terminals V L1aj As shown in equation (14), the frequency β On1 While vibrating a sine wave of exp(-α ON1j This results in a series-parallel transient response consisting of underdamped (damped oscillations) that decay exponentially at time t. The oscillations in this series-parallel transient response form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0066] Similarly, as shown on the right side of equation (5c), the coefficient (1 / C 1j ) to obtain the capacitor current i C1 By integrating, the power supply capacitor C 1j Terminal voltage (power supply side charge / discharge voltage) V C1j is g in Eq. (15). 11 Using (t), V C1j ={(L 1aj E0) / (R 01ON β ON1 )}g 11 (t) ……(16) The charging and discharging voltage on the power supply side is given by V C1j As shown in equation (16), the frequency β On1 While vibrating a sine wave of exp(-α ON1j This results in a series-parallel transient response consisting of underdamped (damped oscillations) that decay exponentially at time t. The oscillations in this series-parallel transient response form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0067] <Series transient response state> When the driving element Q1 is in the cutoff state, the primary side circuit 2a jThe power supply capacitor C located 1j and power supply coil L 1aj The closed loop formed by these two components constitutes an RLC series resonant circuit. Focusing on the RLC series resonant circuit (hereinafter simply referred to as "series resonant circuit"), the power supply side capacitor C 1j Parasitic resistance r p1j and the power coil L 1aj Parasitic resistance r L1 The compound R 1OFF =r L1 +r p1j ……(17) is the resistance component of the series resonant circuit. 1j Parasitic resistance r p1j is small and r p1j ≪r L1 If this can be considered, the power supply side capacitor C 1j and power supply coil L 1aj The resistance component of the series resonant circuit is R 1OFF =r L1 =R L1 ...(18) This can be approximated as follows, resulting in the same value as equation (4b).

[0068] If the current that flows transiently through the series resonant circuit is i1, the transient response state of the series resonant circuit when the driving element Q1 is in the cutoff state is as follows:

number

[0069] The equivalent floating resistance R of the series resonant circuit shown in equation (14) or (18) 1OFF When is sufficiently small, that is, when the damping constant α OFF1 =R 1OFF / (2L 1j ), natural angular frequency ω OFF1 =(L 1aj C 1j ) -1 / 2 As, α OFF1 2 <ω OFF1 2 ……(20) holds, the solution to equation (19) is, as is well known in transient phenomenon theory, i1={E0 / (L 1aj β OFF1 )}exp(-α OFF1 t)sin(β OFF1 t) ……(21a) However, β in equation (21a) OFF1 teeth, β OFF1 ={(α OFF1 ) 2 -(ω OFF1 ) 2} 1 / 2 ……(21b) is.

[0070] The natural angular frequency ω of equations (20) and (21b) OFF1 corresponds to the resonant frequency of an RLC parallel resonant circuit in constant amplitude AC theory, but the term "resonant frequency" is not appropriate in transient response conditions. The current i flowing transiently through a series resonant circuit is 1j is expressed by the frequency β OFF1While vibrating with a sine wave of exp(-α OFF1 t) shows the waveform of an underdamped (damped oscillation) that decays exponentially.

[0071] The current i1 in equation (21b) is 1aj By differentiating the coefficient, the power supply coil L is obtained as shown in equation (22). 1aj The voltage between the terminals V L1a teeth, V L1aj =-(E0 / β OFF1 )h 11 (t) ……(22) However, the h on the right side of equation (22) is given by 11 (t) is h 11 (t)=exp(-α OFF1 t){α OFF1 sin(β OFF1 t)-β OFF1 cos(β OFF1 t)} ……(twenty three) The power coil L 1aj The voltage between the terminals V L1aj As shown in equation (22), the frequency β OFF1 The sine wave and cosine wave of the vibration are combined to form a hump-shaped vibration, and the envelope of the vibration peak (amplitude) is exp(-α OFF1 This results in a series transient consisting of an underdamped (damped oscillation) that decays exponentially at time t. The oscillations in this series transient form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0072] The current i1 in equation (21b) is multiplied by the coefficient (1 / C 1j ) is integrated, the power supply capacitor C of the power supply resonant circuit is obtained as shown in equation (24). 1j The charging and discharging voltage of the power supply side V C1j is the h in equation (23). 11 Using (t), V C1j =[E0 / [L 1aj C1j {(α OFF1 ) 2 +(β OFF1 ) 2}β OFF1 ]]h 11 (t) ……(twenty four) The charging and discharging voltage on the power supply side is given by V C1j As shown in equation (24), the frequency β OFF1 The sine wave and cosine wave of the vibration are combined to form a hump-shaped vibration, and the envelope of the vibration peak (amplitude) is exp(-α OFF1 This results in a series transient consisting of an underdamped (damped oscillation) that decays exponentially at time t. The oscillations in this series transient form the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0073] According to the parallel transmission system of the first embodiment, by selecting a drive period that allows both packet-like transient response vibrations to resonate in harmony with the natural vibrations, it is possible to improve the power transmission efficiency and transmit a large amount of energy in parallel in a short time. 1aj and receiving coil L 2aj Since effective wireless parallel power transmission is possible even when the distance between the railcar and the end of the platform structure serving as the boarding and disembarking area is 400 mm or more, efficient parallel power transmission is possible even when the distance between the railcar and the end of the platform structure serving as the boarding and disembarking area varies depending on the status of passengers, etc.

[0074] (Second embodiment) Although the electric train is not shown in the drawing, the parallel transmission system according to the second embodiment of the present invention is configured to include a plurality of railway cars 311, ..., 31 p The electric train is composed of multiple storage batteries C s1 ,C s2 ,C s3 ,C s4 ,……,C s(n-1) ,U snIn addition, a plurality of power receiving devices are periodically distributed and arranged on the electric train in a one-to-one correspondence with the plurality of storage batteries. In FIG. 6, a specific railway vehicle 31 selected from a plurality of railway vehicles is k 3 shows an example of a part of a parallel transmission system having a periodic structure corresponding to a train formation. k In this regard, the parallel transmission system according to the second embodiment transmits electromagnetic energy from the power supply device 29b, which periodically arranges wavelet-shaped electromagnetic energy, to the corresponding power receiving device 27b. j The parallel transmission system according to the second embodiment is a multi-channel contactless power transmission system that uses natural vibration harmonics to supply power to a plurality of power receiving devices 27b distributed on an electric train. j and a power supply side operation unit 33 connected to the plurality of power supply devices 29b and sending commands to the plurality of power supply devices 29b. In FIG. 6, a power supply multiple coil (hereinafter referred to as "power supply multiple coil") ΣL 1bνj and railway cars 31 k The corresponding receiving coil L 2bj The figure shows a schematic diagram of the effective transmission area (active area) of contactless power supply, where the subscript ν is a positive integer of 1 or more.

[0075] Here, the power supply multiple coil ΣL 1bνj is a multiple coil having a pattern in which multiple ξ spiral coils having the same inductance are spirally arranged in parallel on the same plane or the same curved surface (ξ is a positive integer of 2 or more). As explained in the parallel transmission system according to the first embodiment, the "same plane" means a curved surface whose Gaussian curvature and mean curvature are both zero. In the parallel transmission system according to the second embodiment, the multiple ξ spiral coils may be arranged in parallel along the same curved surface, such as a part of a cylindrical surface, a part of a spherical surface, a part of an ellipsoidal surface, or a part of a parabolic surface. For example, the vehicle body 31a shown in FIG. 6 kIn the parallel transmission system according to the second embodiment, the power supply multiple coil ΣL 1bνj Inductive power supply board 12 j and the receiving coil L 2bj Inductive power receiving board 11 j As shown in FIG. 6, a specific (j-th) receiving coil L 2bj Body 31a k Ceiling cavity 30a k or body 31a k On the roof of j The arrangement topology of the parallel transmission system according to the first embodiment is the same as that of the parallel transmission system according to the first embodiment. 1bνj From each coil to the receiving coil L 2bj Wavelet-shaped electromagnetic energy is transmitted to the

[0076] As already explained in the parallel transmission system according to the first embodiment, in the parallel transmission system according to the second embodiment based on the non-AC theory, the receiving coil L 2bj and multiple power supply coils ΣL 1bνj Distance L between the surfaces T Therefore, as shown in Fig. 1D, the transmission efficiency does not change significantly with the change in the power supply multiple coil ΣL 1bνj However, the power supply device 29b may be fixed to the ceiling 91 of the station facility, etc. However, as shown in FIG. 1bνj Inductive power supply board 12, which is housed in a disk-shaped dielectric j and inductive power supply board 12 j Equipped with multiple power supply coils ΣL 1bνj and receiving coil L 2bj A distance control mechanism 32 for controlling the distance between the j The gap control mechanism 32 may be configured to include: j In the case where the power supply device 29b is provided with the power supply multiple coil ΣL 1bνj Power supply current and interval control mechanism 32 jA drive control circuit 34b that controls j And this drive control circuit 34b j A transmission data storage device 342a and a program storage device 342b connected to the drive control circuit 34b j Inductive power supply board 12, the transmission current of which is controlled by j It is mainly composed of

[0077] Here, the inductive power supply board 12 of the parallel transmission system according to the second embodiment j The power supply multiple coil ΣL 1bνj teeth, ΣL 1bνj =L 1b1j +L 1b2j +L 1b3j +……+L 1bξj ……(twenty five) Figure 7C shows the power supply multiple coil ΣL when the number of parallel coils is ξ=2. 1bνj As shown in Figure 7C, the power supply multiple coil ΣL 1bνj Each of the spiral coils constituting the coil has the same coil width and coil thickness, and is adjacent to each other with a certain gap therebetween. More preferably, the effective transmission area (active area) S eff The spiral coils are arranged in a pattern of multiple crossed spirals so that they are densely packed inside the vehicle, and multiple (ξ) spiral coils form parallel inductances. k The effective transmission area (active area) that can be installed in eff is the same as that of the parallel transmission system according to the first embodiment, the parallel transmission system according to the second embodiment allows for a ξ-fold increase in the density of the spiral coils. j The power supply device 29b and the power receiving device 27b j The power supply multiple coil ΣL 1bνj and receiving coil L 2bj Wavelet-shaped electromagnetic energy is transmitted and received through the power supply multiple coils ΣL 1bνj The natural oscillation of each transient response in the primary circuit formed by each of the multiple power supply coils constituting the2bj The natural oscillations of the transient response in the secondary circuit formed by the primary side circuit network 2b are harmonized with each other, and electromagnetic energy is transmitted wirelessly through multiple paths. Therefore, as shown in FIG. 7A, the power supply device 29b has multiple primary side circuits (power supply side resonant circuits) that form a primary side circuit network 2b j In the embodiment shown in FIG. 6, the distance control mechanism 32 j is a tilting movement mechanism, and various well-known mechanisms can be used, such as a hydraulic tilting movement mechanism, an electromagnet tilting movement mechanism, or a movement mechanism that rotates a ball spiral with a step motor.

[0078] FIG. 6 shows an example of a power supply multiple coil ΣL 1bνj Inductive power supply board 12 j is omitted, and the power supply multiple coil ΣL 1bνj It is possible to use the power supply multiple coil ΣL in a bare state. Although it is a matter of definition, it is in a skeleton state, consisting of only a frame, and is almost bare. 1bνj The space surrounding the j In FIG. 6, the receiving coil L 2bj Also, an inductive receiving board 11 made of a disk-shaped dielectric j Although the example shows a configuration in which the receiving coil L 2bj Inductive power receiving panel 11 that houses j is omitted and the receiving coil L 2bj It can be used in a bare state. It is composed of only a frame and is almost bare, so that it is in a skeleton state. 2bjj The space surrounding the "inductive receiving board 11 j The power supply multiple coil ΣL is generated by the natural vibration harmonic of the power supply resonant circuit and the power receiving resonant circuit. 1bνj From each coil to the receiving coil L 2bj The inductive feeder boards 12 are facing each other in the effective transmission area, which is the main stage of the natural vibration harmonic power supply. j and inductive receiving board 11 j Thus, the "space power transmission panel set (11)" according to the second embodiment j ,12 j) is defined. This definition is based on the "power supply multiple coil ΣL 1bνj And this power supply multiple coil ΣL 1bνj The receiving coil L is parallel to the main surface that defines the effective transmission area of 2bj The paired spatial power transmission board set (ΣL 1bνj, L 2bj ) is configured. eff " is a power supply multiple coil ΣL that effectively functions as a contactless power transmission. 1bνj is the area of ​​the two-dimensional space formed by the pattern.

[0079] Effective transmission area S eff The "principal surface defining the power supply multiple coil ΣL 1bνj The power supply multiple coil ΣL is defined on a two-dimensional plane where the pattern is configured. 1bνj The entire surface of the pattern is also an envelope that occupies the same plane. 1bνj The two-dimensional plane on which the pattern is configured can be exemplified by a polar coordinate plane on which Archimedes' spiral is defined. 1bνj, L 2bj ) is the power supply multiple coil ΣL 1bνj And this power supply multiple coil ΣL 1bνj The receiving coil L has a main surface that faces parallel to the main surface of 2bj Equipped with a power supply multiple coil ΣL 1bνj From each coil to the receiving coil L 2bj The receiving coil L is a pair structure that transmits power in parallel without contact. 2bj The main surface of the receiving coil L 2bj The surface of the pattern of the receiving coil L is developed on the same plane. 2bj The envelope of the pattern is the power supply multiple coil ΣL 1bνj7C, the surfaces of the plurality of planar spiral coils are arranged in parallel to form the same plane, so that the surfaces of the spiral coils form a common envelope of the patterns of the plurality of spiral coils. Alternatively, the surfaces of the plurality of curved spiral coils may be arranged in parallel to form the same curved surface, so that the surfaces of the spiral coils form a common envelope of the patterns of the plurality of spiral coils.

[0080] Inductive power supply board 12 j The top surface of the inductive power receiving board 11 j The inductive feeder board 12 is placed parallel to the underside of the j The load 6 is installed above the platform of a railway station facility, with its main surface inclined relative to the horizontal. j is the equivalent circuit X as explained in the first embodiment with reference to FIG. 2B. Leq The storage battery C is expressed as sj and the inductive power receiving board 11 j Electromagnetic energy is supplied in multiple channels by natural vibration harmonics via the multi-channel storage. Railway vehicles 311, 312, 313, ... 31 k Each storage battery C is distributed sj The electromagnetic energies stored in the respective power supplies are integrated in a distributed power storage boost system similar to the distributed power storage boost system 4a of the parallel transmission system according to the first embodiment shown in Figures 4B to 4F, and boosted to a drive voltage necessary to drive the motors. For this reason, the distributed power storage boost system of the parallel transmission system according to the second embodiment includes a battery control circuit 41 shown in Figure 10B.

[0081] Railway vehicles 311, ......, 31 of the parallel transmission system according to the second embodiment q A specific railway vehicle among these is equipped with a variable voltage variable frequency inverter similar to the variable voltage variable frequency inverter 43 described with reference to FIG. 4A in the parallel transmission system according to the first embodiment (q=k max is a positive integer of 1 or more.) Therefore, in the distributed storage boost system of the parallel transmission system according to the second embodiment, each storage battery C sjThe variable voltage variable frequency inverter boosts the charging voltage stored in the railcar 311, ..., 31 q By driving the electric motor of a specific railway vehicle among the q-car train, the railway vehicle 311, ......, 31 q As shown in Figure 6, the railway vehicle 31 k Outside the station, a power supply side operation unit 33 is installed on the platform. By operating the power supply side operation unit 33 installed on the platform of the station facility, a power supply start signal indicating the start of power supply or a power supply stop signal indicating the stop of power supply is transmitted from the power supply side operation unit 33 to the drive control circuit 34b. j will be output.

[0082] Drive control circuit 34b j Inductive power supply board 12 j and performs various drive controls related to the parallel transmission of electromagnetic energy through multiple channels using the natural harmonic vibrations of the power supply side resonant circuit and the power receiving side resonant circuit. For example, the drive control circuit 34b j When a power supply start signal is input from the power supply side operation unit 33, the inductive power supply panel 12 is set to supply electromagnetic energy that oscillates at a set period. j The drive control circuit 34b controls the current. j is the power receiving device 27b j The vibration characteristics of the electromagnetic energy returned from the inductive power supply board 12 are obtained. j and inductive receiving board 11 j The power receiving device 27a includes an arithmetic logic circuit (ALU) that performs processing to calculate the conditions under which the transmission efficiency is maximized by the natural vibration harmonic between the power receiving device 27a and the power receiving device 27a. j Secondary circuit 3b j The electromagnetic energy returned from the first power supply side capacitor C 11j The first power supply side charge / discharge voltage V between both ends C11j or second power supply capacitor C 12j The second power supply side charge / discharge voltage V between both ends C12j Therefore, the power receiving device 27b j The information on the vibration characteristics of the first power supply side is calculated using the first power supply side charge / discharge voltage V C11j or second power supply side charge / discharge voltage VC11j As in the technology described in Japanese Patent No. 7420671, the first power supply side charge / discharge voltage V C11j or second power supply side charge / discharge voltage V C11j For example, by measuring load 6 j The power supply device 29b can also acquire information on the charging state of the power supply side charging / discharging voltage V C1 The power receiving device 27a obtained by measuring j The information on the passenger side can also be displayed on a device installed at the boarding / deboarding area, such as the power supply side operation unit 33. The transmission data storage device 342a and the program storage device 342b shown in FIG. 6 are connected to the ALU.

[0083] Drive control circuit 34b j In the example shown in FIG. 7A, the switching element, i.e., the first driving element Q 11 and the second driving element Q 12 The primary side switching element drive circuit 340a selects a separate excitation drive timing for switching the first driving element Q shown in FIG. 7A, and outputs a command to operate the primary side switching element drive circuit 340a shown in FIG. 7A at the selected separate excitation drive timing. 11 and the second driving element Q 12 A control signal is sent to the control terminal of the first driving element Q 11 and the second driving element Q 12 The first driving element Q 11 However, if it is a thyristor such as an FET, SIT, GTO, or SI thyristor, the gate electrode of these power semiconductor elements is the first driving element Q 11 This corresponds to the "control terminal" of the first driving element Q 11 If is a BJT, the base electrode of the BJT is connected to the first driving element Q 11 Similarly, the second driving element Q 12 However, if it is an FET, SIT, GTO thyristor, SI thyristor, etc., the gate electrode of these power semiconductor elements is the second driving element Q 12 This corresponds to the "control terminal" of the second driving element Q 12 If is a BJT, the base electrode of the BJT is connected to the second driving element Q12 This becomes the control terminal.

[0084] The characteristics of the parallel transmission system according to the second embodiment shown in Fig. 6 can be expressed by a power supply-side resonant circuit and a power receiving-side resonant circuit as shown in Fig. 7A. The power supply-side resonant circuit is a circuit topology that forms part of the power supply device 29b shown in Fig. 6, and the drive control circuit 34b j and primary side network 2b j The receiving-side resonant circuit is an inductive receiving panel 11 in FIG. j power receiving device 27b including j In Fig. 7A, the secondary circuit 3b j The primary side circuit network 2b of the power supply side resonant circuit shown in FIG. j The "first power supply side resonant circuit" and "second power supply side resonant circuit" that form a parallel circuit network in the above are individual (separate) circuits that operate in synchronization with each other but can operate electrostatically independently.

[0085] As can be seen from FIG. 7A, the power supply side resonant circuit is a drive control circuit 34b j Multiple coils for power supply ΣL 1bνj Since it is a configuration that adds, if we express it by eliminating the overlapping parts in a set-theoretic way, the power supply side resonant circuit is j ,ΣL 1bνj ) As in the first embodiment, the drive control circuit 34b j The primary circuit network 2b overlaps j The configuration excluding this portion will be referred to as a "coil current supply circuit." Therefore, in the parallel transmission system according to the second embodiment, the power supply coil (first power supply coil) L of the first power supply side resonant circuit shown in FIG. 1b1j The part excluding the first feed coil L 1b1j The second power supply coil L of the second power supply side resonant circuit is a first coil current supply circuit that supplies a coil current to 1b2j The part excluding the second power feeding coil L 1b2j This serves as a second coil current supply circuit that supplies coil current to the

[0086] Primary side circuit network 2bj The first power supply side resonant circuit is a power supply side capacitor (first power supply side capacitor) C 11j , the first power supply capacitor C 11j The first power supply capacitor C 11j The electrostatic energy sent from the first power supply side capacitor C is stored as magnetic energy. 11j At the same time, the secondary circuit 3b j Receiving coil L 2bij A power feeding coil (first power feeding coil) L is magnetically coupled to the 1b1j The second power supply side resonant circuit has a second power supply side capacitor C 12j , second power supply side capacitor C 12j The second power supply capacitor C 12j The electrostatic energy sent from the second power supply side capacitor C is stored as magnetic energy. 12j At the same time, the secondary circuit 3b j Receiving coil L 2bij a second feeding coil L that is magnetically coupled to the 1b2j For example, as shown in FIG. 7C, a spiral first feed coil L 1b1j and the second feed coil L 1b2j The coils are nested and multiply intersected so as to fill the gaps between each other within the same plane or the same curved surface, and are densely packed together, forming the multi-coil ΣL for power supply shown in Figure 6. 1bνj It is composed of:

[0087] Primary side circuit network 2b j In the first power supply side resonant circuit, a DC power supply 5 and a first driving element Q are connected in series with each other. 11 The first power supply capacitor C 11j The first driving element Q 11 One terminal of the first power supply side capacitor C is connected to the high potential side terminal (positive terminal) of the DC power supply 5. The DC power supply 5 supplies a constant DC voltage (power supply voltage) E0 to the first power supply side resonant circuit. 11j One terminal of the first driving element Q11 The other terminal of the first feed coil L 1b1j The first power supply capacitor C 11j The other terminal of the first power supply coil L is connected to the connection node of the low potential side terminal (negative terminal) of the DC power supply 5. 1b1j The other terminal of the first power supply capacitor C 11j The DC power supply 5 is connected to the connection node of the low potential side terminal of the DC power supply 5 together with the other terminal of the first driving element Q 11 When the first power supply capacitor C 11j DC voltage is supplied to the first driving element Q 11 is the primary side circuit network 2b j The first driving element Q operates on / off as a circuit element that limits the free damping oscillation of the first power supply side resonant circuit included in 11 realizes a transient current-voltage change in the first power supply side resonant circuit.

[0088] In the second power supply side resonant circuit, a DC power supply 5 and a second driving element Q are connected in series. 12 The second power supply capacitor C 12j The second driving element Q 12 One terminal of the second power supply capacitor C is connected to the high potential terminal (positive terminal) of the DC power supply 5. The DC power supply 5 supplies a constant DC voltage (power supply voltage) E0 to the first power supply side resonant circuit and the second power supply side resonant circuit. 12j One terminal of the second driving element Q 12 The other terminal of the second feed coil L 1b2j The second power supply capacitor C 12j The other terminal of the second power supply coil L is connected to the connection node of the low potential side terminal (negative terminal) of the DC power supply 5. 1b2j The other terminal of the second power supply capacitor C 12j The other terminal of the first terminal is connected to the connection node of the low potential side terminal of the DC power supply 5 .

[0089] The DC power supply 5 drives the second driving element Q 12 When the second power supply capacitor C 12j The second driving element Q 12 is the primary side circuit network 2b j The second driving element Q operates on / off as a circuit element that limits the free damping oscillation of the second power supply side resonant circuit included in 12 is the primary side circuit network 2b j Therefore, a transient current-voltage change is realized in the second power supply side resonant circuit included in the first power supply side resonant circuit shown in FIG. 1b1j The first coil current supply circuit, which is the part excluding the first coil current supply circuit, and the second power supply coil L included in the second power supply side resonant circuit. 1b2j The second coil current supply circuit, which is the portion excluding the first coil current supply circuit, is configured to be connected to the same DC power supply 5. The DC power supply 5 common to the first and second coil current supply circuits may be a pseudo constant voltage source, or may be a DC power supply with a simple structure that is simply rectified and contains a large ripple component, so that the control circuit and peripheral circuits are simple, durable, easy to design, and an inexpensive DC power supply 5 can be used.

[0090] Secondary circuit 3b of the receiving-side resonant circuit j is the power supply multiple coil ΣL 1bνj The power supply multiple coils ΣL are spaced apart and parallel to the main surface of the 1bνj receiving coil L that receives magnetic energy without contact from 2bij , receiving coil L 2bij The receiving coil L 2bij The receiving capacitor C converts the magnetic energy stored in the 2j Although the physical shape is not visible in FIG. 7A, the first feeding coil L 1b1j and the second feed coil L 1b2j7B shows two spiral coils. More generally, the coil current supply circuit is a plurality of circuits that supply synchronized coil currents to a plurality (ξ) of spiral coils, respectively, as shown in FIG. 7B (ξ is a positive integer of 2 or more). Although not shown in FIG. 7B, the plurality of coil current supply circuits corresponding to the plurality of spiral coils can operate electrostatically independently of each other and can also operate synchronously.

[0091] Therefore, there are multiple (ξ) coil current supply circuits in parallel corresponding to the multiple (ξ) spiral coils arranged in parallel. In FIG. 7B, circuit elements and the like located on the left side of the page are omitted, but the multiple coil current supply circuits are parallel circuits connected to a common DC power source. j ,ΣL 1bνj ), the power receiving side resonant circuit is j receiving coil L 2bij Since it is a configuration that adds j ,L 2bij ) can be expressed as follows. j As shown in Figure 7A, the load side diode D 2j and load 6 j The series connection circuit with the receiving side capacitor C 2j and receiving coil L 2bij are connected in parallel to each other.

[0092] In the implementation circuit shown in Fig. 7A, the power supply multiple coil ΣL 1bνj The first feeding coil L 1b1j In order to prevent the reflux current from flowing back to the DC power supply 5, the power supply side diode D 11 is the DC power supply 5 and the first driving element Q 11 The second feeding coil L 1b2j In order to prevent the reflux current from flowing back to the DC power supply 5, the power supply side diode D 12 is the DC power supply 5 and the second driving element Q 12Similarly, the power supply multiple coils ΣL 1bνj The first feeding coil L 1b1j Considering the return current from the first drive element Q 11 The second power supply coil L is connected between the source and drain of the MOSFET as 1b2j Considering the return current from the second drive element Q 12 The freewheeling diodes are connected in parallel as protection elements between the source and drain of the MOSFETs, but are not shown in FIG. 7A.

[0093] First power supply capacitor C 11j is the electrostatic energy supplied from the DC power supply 5 and the power supply multiple coil ΣL 1bνj The magnetic energy supplied as a circulating current from the first power supply side capacitor C is stored. 11j The voltage between both ends of the power supply side charge / discharge voltage V C11j Boost the voltage. Power supply multiple coil ΣL 1bνj is the first power supply capacitor C 11j The electrostatic energy sent from the first power supply side capacitor C is stored as magnetic energy. 11j At the same time, the secondary circuit 3b j Receiving coil L 2bij and magnetically coupled to the secondary circuit 3b j The first coil current supply circuit of the parallel transmission system according to the second embodiment periodically switches between two transient response states, a "first series-parallel transient response state" and a "first series transient response state," which will be described below, to supply magnetic energy to the first power feeding coil L. 1b1j Similarly, the second coil current supply circuit periodically switches between two transient response states, a "second series-parallel transient response state" and a "second series transient response state," which will be described below, to supply a coil current to the second power feed coil L. 1b2j The coil current is supplied to

[0094] <First series-parallel transient response state> First driving element Q 11 and the second driving element Q 12are synchronized and turn on and off, so the first driving element Q 11 When is in a conducting state, the second driving element Q 12 is also in a conducting state, and the first driving element Q 11 When is in the cutoff state, the second driving element Q 12 The first driving element Q 11 When the power supply is in a conducting state, the DC power supply 5 and the first driving element Q 11 and the primary side circuit network 2b j The first power supply capacitor C included in 11j and the first feeding coil L 1b1j The LC parallel resonant circuit with this constitutes the "first series-parallel resonant circuit." Similarly, the second driving element Q 12 When the current is in a conducting state, the DC power supply 5 and the second driving element Q located on the driving circuit side 12 and the primary side circuit network 2b j The second power supply capacitor C included in 12j and the second feeding coil L 1b2j This and the LC parallel resonant circuit form a "second series resonant circuit."

[0095] In FIG. 7A, when focusing on the first series-parallel resonant circuit, the equivalent internal resistance of the first power supply side resonant circuit included in the DC power supply 5 is defined as r 11 The equivalent internal resistance of the second power supply resonant circuit is r 12 Although it is shown as r 11 =r 12 The first driving element Q 11 When is on, the DC power supply 5, the first driving element Q 11 and the first power supply capacitor C 11j and the first feeding coil L 1b1j The closed circuit formed by the LC parallel resonant circuit constitutes the first power supply side resonant circuit. 11 , first driving element Q 11 On-resistance r on11 When using the above, the series resistance R 01ON can be expressed as the already explained formula (4a).

[0096] In FIG. 7A, the first supply capacitor C 11j is the parasitic resistance r p11 is assumed to exist, and the second power supply side capacitor C 12j is the parasitic resistance r p12 Also, the multiple coils for power supply ΣL 1bνj The first feed coil L included in 1b1j is the parasitic resistance r L1 is assumed to exist, and the second feeding coil L 1b2j is the parasitic resistance r L2 The first power supply side capacitor C 11j Parasitic resistance r p11 is small and r p11 ≪r L1 If this can be considered, the first power supply side capacitor C included in the first power supply side resonant circuit 11j and the first feeding coil L 1b1j The parallel circuit has a large resistance R, which can be expressed by equation (4b). L1 is the first feeding coil L 1b1j The first series-parallel resonant circuit is formed by the first series-parallel resonant circuit.

[0097] First power supply capacitor C 11j Parasitic resistance r p11 is large, and r p11 ≒r L1 Then, the first power supply side capacitor C that constitutes the first power supply side resonant circuit 11j and the first feeding coil L 1b1j The parallel circuit formed by the * 1ONLC In terms of the equivalent circuit, R in equation (4c) * 1ONLC is the series resistance R in equation (4a) 01ON to R in equation (4c) * 1ONLC Since the equation (4d) can be expressed as follows, the first power supply side resonant circuit has a series resistance R * 01ON This can be considered as a "first series-parallel resonant circuit" having

[0098] First, the second feeding coil L 1b2j and other inductances, and the first feeding coil L1b1j The operation of the independent first series-parallel resonant circuit will be considered under the condition that there is no interaction between the first series-parallel resonant circuit and the first power supply side capacitor C 11j The transient capacitor current is i C1 , first feeding coil L 1b1j The transient coil current flowing through i L1 , the current supplied from the DC power supply 5 is i1, 11 When the first power supply resonant circuit is in a conducting state, the transient response state of the first power supply resonant circuit is 01ON and resistor R L1 in view of,

number

[0099] Power supply coil L 1b1j and receiving coil L 2bj The mutual inductance M 11-2 Considering this, equations (26b) and (26c) respectively give the mutual inductance M 11-2 The current i of the receiving resonant circuit with coefficient L2 Therefore, equations (26b) and (26c) are simultaneous equations with the corresponding similar equations on the power receiving side resonant circuit side, but the discussion of simultaneous equations will be omitted here. 11 The first power supply capacitor C is set so that it satisfies equation (26b) in the conductive state. 11j and the first feed coil L 1b1j A power supply voltage E0 is supplied to the parallel circuit.

[0100] Substituting equation (26a) into equation (26b) and differentiating both sides of equation (26c) with respect to time t, we get

number

number

[0101] α 2 ON12b ≪ω 2 ON1b If so, then from equation (30d), β ON1b =i(ω ON1b ) and the first feeding coil L constituting the first feeding side resonant circuit 1b1j The transient coil current i L1 teeth, i L1 =(E0 / R 01ON ){1-f 11 b (t)} ……(32) However, on the right side of equation (32), f 11 b (t)=exp(-α ON11b t){cos(β ON1b t)+(α ON11b / β ON1 b )sin(β ON1 b t)} ...(33) The first feeding coil L 1b1j The transient coil current i L1 As shown in equation (32), the frequency β ON1b The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α ON1b This results in a first series-parallel transient state consisting of exponentially decaying underdamping at time t. The oscillations in this first series-parallel transient state then become the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0102] f in equation (33) 11b (t), the first power supply side capacitor C 11j The transient current i C1 Similarly, from equation (27), i C1 =(E0 / R 01ON )f 11 (t) ……(34) The first power supply capacitor C 11j The capacitor current i C1 As shown in equations (33) and (34), the frequency β ON1b The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α ON1b This results in a first series-parallel transient state consisting of exponentially decaying underdamping at time t. The oscillations in this first series-parallel transient state then become the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0103] As shown in the first term on the left side of equation (26c), the coefficient L 1aj By differentiating Equation (32) using 1b1j The voltage between the terminals of Vi 1bj teeth, V L1bj =-(L 1b1j E0 / R 01ON )g 11b (t) ……(35) The g on the right side of equation (35) is given by 11b (t) is g 11b (t)=[{(α ON11b ) 2 +(β ON1b ) 2} / β ON1b ] exp(―α ON11b t)sin(β ON1b t) ...(36) The first feeding coil L 1b1j The voltage between the terminals V L1bj As shown in equations (35) and (36), the frequency β ON1b While vibrating a sine wave of exp(-α ON11b This results in a first series-parallel transient state consisting of exponentially decaying underdamping at time t. The oscillations in this first series-parallel transient state then become the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0104] Similarly, as shown on the right side of equation (26c), the coefficient (1 / C 11j ) to obtain the capacitor current i C1 By integrating, the power supply capacitor C 11j Terminal voltage (power supply side charge / discharge voltage) V C11j is g in Eq.(36). 11b Using (t), V C11j ={(L 1b1j E0) / (R 01ON β ON1b )}g 11b (t) ……(37) The charging and discharging voltage on the power supply side is given by V C11j As shown in equations (36) and (37), the frequency β ON1b While vibrating a sine wave of exp(-α ON11b This results in a first series-parallel transient state consisting of exponentially decaying underdamping at time t. The oscillations in this first series-parallel transient state then become the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0105] <Second series-parallel transient response state> Similarly, the second feed coil L 1b2j is the first feeding coil L 1b1j In FIG. 7A, the second driving element Q 12 When is on, the DC power supply 5, the second driving element Q 12 and the second power supply capacitor C 12j and the second feeding coil L 1b2j The closed circuit formed by this LC parallel resonant circuit constitutes the second power supply side resonant circuit. 12 On-resistance r on12 is used, the series resistance R 02ON teeth, R 02ON =r 12 +r on12 …(38a) It can be expressed as:

[0106] As in the case of the first series-parallel resonant circuit, the second power supply side capacitor C 12j is the parasitic resistance r p12 is assumed to exist, and the second power supply side capacitor C 12j is the parasitic resistance r p12 Also, the second feeding coil L 1b2j is the parasitic resistance r L2 There is a second power supply capacitor C 12j Parasitic resistance r p12 is small and r p12 ≪r L2 If this can be considered, the second power supply side capacitor C that constitutes the second power supply side resonant circuit 12j and the second feeding coil L 1b2j In a parallel circuit, R L2 =r L2 ...(38b) A large resistance R can be expressed as L2 is the second feed coil L 1b2j It exists only on the side of the rectifier and forms a second series-parallel resonant circuit.

[0107] Similarly to equations (30a) to (30d), the parameters of the second power supply side resonant circuit are defined by equations (39a) to (39d) as follows: α ON21b =(R 02ON R L2 C 12j +L 1b2j ) / 2R 02ON L 1b2j C 12j …(39a) α ON22b =(R 02ON R L2 C 12j -L 1b2j ) / 2R 02ON L 1b2j C 12j ...(39b) ωON2b =(L 1b2j C 12j ) -1 / 2 ...(39c) β ON2b ={(α ON22b ) 2 -(ω ON2b ) 2} 1 / 2 ...(39d) Furthermore, g 12b (t)=[{(α ON21b ) 2 +(β ON2b ) 2} / β ON2b ] exp(―α ON21b t)sin(β ON2b t) ...(40) Then, the second power supply side capacitor C that constitutes the second power supply side resonant circuit is 12j Terminal voltage (power supply side second charge / discharge voltage) V C12j and the second feeding coil L 1b2j The voltage between the terminals of Vi L2 are, respectively, V L2bj =-(L 1b2j E0 / R 02ON )g 12b (t) ……(41a) V C12j ={(L 1b2j E0) / (R 02ON β ON2b )}g 12b (t) ……(41b) The second feeding coil L 1b2j The voltage between the terminals V L2bj As shown in equation (41a), the second power supply side capacitor C 12j The second charging / discharging voltage V C12j is expressed as in equation (41b), at frequency β ON2b While vibrating a sine wave of exp(-α ON21bThis leads to a second series-parallel transient state consisting of exponentially decaying underdamping at time t. The oscillations in this second series-parallel transient state then become the basis for a wavelet-like waveform fed by the natural vibration harmonics.

[0108] <First series transient response state> First feed coil L 1b1j The second feed coil L 1b2j We will now focus on the first series resonant circuit as an independent circuit, assuming that it does not interact with other inductances such as the first driving element Q. 11 When the primary side circuit network 2b is in the cutoff state, j The first power supply capacitor C included in 11j and the first feeding coil L 1b1j The closed loop formed by the second driving element Q forms the first series resonant circuit. 12 When the primary side circuit network 2b is in the cutoff state, j The second power supply capacitor C included in 12j and the second feeding coil L 1b2j The closed loop formed by the first power supply side capacitor C forms the second series resonant circuit. 11j Parasitic resistance r p11j and the first feed coil L 1b1j Parasitic resistance r L1j The compound R 1OFFj =r L1j +r p11j ……(42a) is the resistance component of the first series resonant circuit. 11j Parasitic resistance r p11j is small and r p11j ≪r L1j If this can be considered, the first power supply side capacitor C that constitutes the first power supply side resonant circuit 11j and the first feeding coil L 1b1j The resistance component of the series resonant circuit is R 1OFFj =r L1j =R L1j ...(42b) This can be approximated as follows, resulting in a value equivalent to equation (4b).

[0109] If the current that flows transiently through the first series resonant circuit is i1, then the first driving element Q 11 When the first series resonant circuit is in the cutoff state, the transient response state of the first series resonant circuit is as follows:

number

[0110] The equivalent floating resistance R of the first series resonant circuit shown in equation (42a) or (42b) 01ON When is sufficiently small, that is, when the damping constant α OFF1j =R 01ON / (2L 1b1j ), natural angular frequency ω OFF1j =(L 1b1j C 11j ) -1 / 2 As, α OFF1j 2 <ω OFF1j 2 ...(44) holds, the solution to equation (43) is, as is well known in transient phenomenon theory, i1={E0 / (L 1b1j β OFF1j )}exp(-α OFF1j t)sin(β OFF1j t) ……(45a) However, β in equation (45a) OFF1j teeth, β OFF1j ={(α OFF1j ) 2 -(ω OFF1j ) 2} 1 / 2 ……(45b) is.

[0111] The natural angular frequency ω of equations (44) and (45b) OFF1j corresponds to the resonant frequency of the RLC parallel resonant circuit in the theory of constant amplitude AC, but the term "resonant frequency" is not appropriate in the transient response state. The current i1 that flows transiently through the first series resonant circuit has a frequency β OFF1j While vibrating with a sine wave of exp(-α OFF1j The first series transient state is formed by underdamping, which decays exponentially at time t. The oscillations in this first series transient state are the basis for the wavelet-like waveforms fed by the natural vibration harmonics. The current i1 in Eq. (45a) is expressed as L, as in the first term on the left-hand side of Eq. (43). 1b1j By differentiating with the coefficient, the power supply coil L is obtained as shown in equation (46). 1b1j The voltage between the terminals V L1b1j teeth, V L1b1j =-(E0 / β OFF1j )h 11bj (t) ……(46) However, h on the right side of equation (46) 11bj (t) is h 11bj (t)=exp(-α OFF1j t){α OFF1j sin(β OFF1j t)-β OFF1j cos(βOFF1j t)} ...(47) The power coil L 1b1j The voltage between the terminals V L1b1j As shown in equations (46) and (47), the frequency β OFF1j The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α OFF1j At time t, a first series transient state consisting of exponentially decaying underdamping occurs. The oscillations in this first series transient state then become the basis for a wavelet-like waveform fed by natural vibration harmonics.

[0112] The current i1 in equation (45a) is calculated by the coefficient (1 / C 11j ), the power supply capacitor C of the power supply resonant circuit is obtained as shown in equation (48). 11j The charging and discharging voltage of the power supply side V C11j is the h in equation (47). 11bj Using (t), V C11j =[E0 / [L 1aj C 11j {(α OFF1j ) 2 +(β OFF1j ) 2}β OFF1j ]]h 11bj (t) ...(48) The charging and discharging voltage on the power supply side is given by V C11j As shown in equations (47) and (48), the frequency β OFF1j The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α OFF1j At time t, a first series transient state consisting of exponentially decaying underdamping occurs. The oscillations in this first series transient state then become the basis for a wavelet-like waveform fed by natural vibration harmonics.

[0113] <Second series transient response state> Similarly, the second feed coil L 1b2jThe first feeding coil L 1b1j The second series resonant circuit operates independently of the first series resonant circuit, assuming that it does not interact with other inductances such as the second driving element Q. 12 When the primary side circuit network 2b is in the cutoff state, j The second power supply capacitor C included in 12j and the second feeding coil L 1b2j The closed loop formed by the second power supply side capacitor C forms the second series resonant circuit. 12j Parasitic resistance r p12j and the second feed coil L 1b2j Parasitic resistance r L2j The compound R 2OFFj =r L2j +r p12j ……(49a) is the resistance component of the second series resonant circuit. 12j Parasitic resistance r p12j is small and r p12j ≪r L2j If this can be considered, the second power supply side capacitor C that constitutes the second power supply side resonant circuit 12j and the second feeding coil L 1b2j The resistance component of the series resonant circuit is R 2OFFj =r L2j =R L2j ...(49b) can be approximated as follows, which results in values ​​equivalent to equations (4b) and (42b).

[0114] If the current that flows transiently through the second series resonant circuit is i2, then the second driving element Q 12 The transient response state of the second series resonant circuit when the power supply is in the cutoff state can be described by an equation similar to equation (43). The equivalent floating resistance R of the second series resonant circuit shown in equation (49a) or (49b) 2OFFj When is sufficiently small, that is, when the damping constant α OFF2j =R 2OFFj / (2L 1b2j ), natural angular frequency ωOFF2j =(L 1b2j C 12j ) -1 / 2 As, α OFF2j 2 <ω OFF2j 2 ……(50) When holds, β OFF2j ={(α OFF2j ) 2 -(ω OFF2j ) 2} 1 / 2 ...(51) Then, similarly to the solution of Eq. (43), the second feed coil L 1b2j The voltage between the terminals V L1b2j and the second power supply side capacitor C that constitutes the second power supply side resonant circuit 12j The second charging / discharging voltage V C12j That is, V L1b2j =-(E0 / β OFF2j )h 12bj (t) ……(52) V C12j =[E0 / [L 1b2j C 12j {(α OFF2j ) 2 +(β OFF2j ) 2}β OFF2j ]]h 12bj (t) ...(53) However, the h on the right side of equations (52) and (53) can be expressed as 12bj (t) is h 12bj (t)=exp(-α OFF2j t){α OFF2j sin(β OFF2j t)-β OFF2j cos(β OFF2j t)} ...(54) is.

[0115] Second feed coil L 1b2j The voltage between the terminals V L1b2j As shown in equations (52) and (54), the second power supply side capacitor C 12j The second charging / discharging voltage V C12j As shown in equations (53) and (54), the frequency β OFF2j The sine wave and cosine wave of the vibration are combined to form a nodular vibration, and the envelope of the vibration peak (amplitude) is exp(-α OFF2j This leads to a second series transient state consisting of exponentially decaying underdamping at time t. The oscillations in this second series transient state then become the basis for a wavelet-like waveform fed by natural vibration harmonics.

[0116] (mutual induction between multiple coils) In the above, the power supply coil L 1b1j and the second feed coil L 1b2j Equations (35), (37), (41a), (41b), (46), (48), (52), (53), etc. have been explained on the assumption that there is no mutual interaction (mutual induction) between the first feeding coil L. 1b1j , second feeding coil L 1b2j and receiving coil L 2bij In the second embodiment, the operation of the first and second power supply side resonant circuits and the like is considered when an interaction exists between the secondary side circuit 3b. j Loads of 6 j Charging voltage V CSj The value of the first power supply side capacitor C in the initial state is assumed to be a high value close to the charge completion voltage (close to full charge). At time t=0 (initial state), 11j The second power supply capacitor C 12j is not charged, and the first charge / discharge voltage V C11j =0, power supply side second charge / discharge voltage V C12j = 0. At t = 0, the first driving element Q 11 and the second driving element Q 12 When these are turned on at the same time, the primary side circuit network 2b j The first power supply capacitor C included in 11j and the first feeding coil L 1b1jThe first series-parallel resonant circuit is formed by the second power supply side capacitor C 12j and the second feeding coil L 1b2j As a result, the power supply voltage E0 of the DC power supply 5 is input in a step in synchronous with the first series-parallel resonant circuit and the second series-parallel resonant circuit. The "step input" is a step input of the "unit step function u s It means "enter (t)".

[0117] The synchronous step input at t=0 initially switches the first supply capacitor C 11j The charging current flows to the resistor R 01ON Using E0 / R 01ON In addition, the second power supply side capacitor C 12j The charging current flows to the resistor R 2OFFj Using E0 / R 02ON At this time, the first feeding coil L 1b1j generates a back electromotive force to block the inflow of the coil current, so the first feeding coil L 1b1j The coil current to the second feed coil L is zero. 1b2j generates a back electromotive force to block the inflow of the coil current, so the second feeding coil L 1b2j The coil current to the first feeding coil L is zero. 1b1j The voltage between the terminals V L1j1 As the coil current decreases, the first feed coil L 1b1j The back electromotive force of the first feeding coil L 1b1j A nodule-shaped coil current as shown in Equation (32) begins to flow in the second feeding coil L. 1b2j The voltage between the terminals V L1b2j As the coil current decreases, the second feed coil L 1b2j The back electromotive force of the second feeding coil L 1b2j A hump-shaped coil current begins to flow.

[0118] However, the first feeding coil L 1b1j and the second feed coil L 1b2jand the mutual inductance M 11-12 Since mutual induction occurs at the first feeding coil L, equations (32), (35), (37), (41a), (41b), etc. are not strictly correct. 1b1j and the second feeding coil L 1b2j When the hump-shaped coil current starts to flow, the first power supply capacitor C 11j The first charge / discharge voltage V between both ends of the power supply side C11 The voltage of the second power supply capacitor C 12j The second charging / discharging voltage V between both ends of the power supply side C12j qualitatively follows the sinusoidal wave of Eq. (41b), reaching a maximum value and then decreasing slightly.

[0119] First power supply capacitor C 11j and the voltage across the second power supply capacitor C 12j When the voltages across the first driving element Q 11 and the second driving element Q 12 The turn-off time is determined by the time when the first power supply coil L 1b1j When the coil current starts to flow, and the counter electromotive force is generated by turning off the first drive element Q 11 The voltage applied to the first driving element Q 11 The time is set so that the second feeding coil L 1b2j When the coil current starts to flow, and the counter electromotive force is generated by turning off the second driving element Q 12 The voltage applied to the second driving element Q 12 The turn-off time is synchronized to a time that will not destroy the first driving element Q. 11 When turned off, the primary side network 2b j The first power supply capacitor C included in 11j and the first feeding coil L 1b1j The closed loop formed by the first driving element Q forms the first series resonant circuit. 11 In synchronization with this, the second driving element Q 12When turned off, the primary side network 2b j The second power supply capacitor C included in 12j and the second feeding coil L 1b2j The closed loop formed by these components forms a second series resonant circuit.

[0120] In the first series resonant circuit, the first power supply side capacitor C 11j to the first feed coil L 1b1j The coil current flows through the first power supply capacitor C 11j The first supply-side capacitor C starts to discharge in earnest, with a tendency to qualitatively follow the nodular non-sinusoidal curve of equation (37). 11j The first charge / discharge voltage V C11 starts to decrease. At this time, the first feeding coil L 1b1j and the second feed coil L 1b2j and the mutual inductance M 11-12 In this situation, equation (37) is not strictly correct because there is mutual induction at 12j to the second feed coil L 1b2j The coil current flows through the second power supply capacitor C 12j The second supply-side capacitor C starts to discharge in earnest, with a tendency to qualitatively follow the nodular non-sinusoidal curve of equation (53). 12j The second charging / discharging voltage V C12j starts to decrease. At this time, the first feeding coil L 1b1j The direction of the coil current flowing through the second feed coil L is the same as that of the 1b2j The coil current flowing through the mutual inductance M 11-12 This reinforces each other.

[0121] First feed coil L 1b1j and the second feed coil L 1b2j and have mutual inductance M 11-12 By mutual induction, the first feeding coil L shown in Eq. (27) and Eq. (43) 1b1j The current driving capacity of the inductance is 2L 1b1j and the second feed coil L 1b2jThe current driving capacity of the inductance is 2L 1b2j This means that in practice, the first feeding coil L 1b1j The inductance of L 1b1j Even if the design is for 1 / 2, the first feed coil L 1b1j The inductance of is equivalent to L 1b1j Similarly, the second feeding coil L 1b2j The inductance of L 1b2j Even if the design is for / 2, the effect of mutual conductance 1b2j The inductance of is equivalent to L 1b2j This is an important guideline to achieve the value of the receiving coil L of the receiving side resonant circuit. 2bij Inductance value L 2bij , and furthermore, the receiving coil L 2bij and the first feed coil L 1b1j distance and receiving coil L 2bij and the second feed coil L 1b2j The "effective transmission inductance" of the power supply resonant circuit, which is determined by the distance between eff1 Then, L eff1 =L 1b1j / 2+L 1b2j / 2 ……(55) This means that even if there is no mutual induction, power can be effectively transferred from the power supply resonant circuit to the power receiving resonant circuit. 1b1j → L eff1 =L 1b1j / 2, if there is mutual induction, the first feeding coil L 1b1j In the case of no mutual induction, the coil current i L1j This means that it is possible to stream

[0122] On the other hand, the resistance component R of the series resonant circuit shown in equations (42a) and (42b) 1OFFj and the resistance component R of the series resonant circuit shown in equations (49a), (49b), etc. 2OFFjAs for the mutual inductance M 11-12 However, in practice, the first feeding coil L 1b1j The inductance of L 1b1j / 2, and the second feed coil L 1b2j The inductance of L 1b2j Designing it to / 2 means that the length of the inductance can be shortened by half. As a result, the parasitic resistance r L1j and r L2j When viewed from the DC power supply 5 side, in the circuit configuration shown in FIG. 7A, the first feeding coil L 1b1j The parasitic resistance r inherent in L1j and the second feed coil L 1b2j The parasitic resistance r inherent in L2j This is equivalent to a configuration in which resistors with half the resistance are connected in parallel. By connecting resistors with half the resistance in parallel, the equivalent parasitic resistance is further reduced to half, which has the remarkable effect of reducing the parasitic resistance of the coil to 1 / 2 × 1 / 2 = 1 / 4. 11j The electromagnetic energy stored in the second feeding coil L 1b2j The first feed coil L is mutually inductive with 1b1j The second power supply capacitor C 12j The electromagnetic energy stored in the first feeding coil L 1b1j The second feed coil L is mutually inductive with 1b2j Try to move to.

[0123] At this time, the first feeding coil L 1b1j The coil current flowing through the first feed coil L 1b1j The magnetic field generated around the 11-2 The receiving coil L coupled with 2bij At the same time, an electromotive force is generated in the second feeding coil L 1b2j The coil current flowing through the second feed coil L 1b2j The magnetic field generated around the 12-2 The receiving coil L coupled with 2b1j An electromotive force is generated in the first feeding coil L, causing a coil current to flow.1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 At this time, the primary side circuit network 2b j Each of the primary and secondary circuits 3b included in j If the transient response characteristics of the receiving capacitor C are balanced, the transmitted power can be most efficiently 2j is charged. That is, the primary side circuit network 2b j From secondary circuit 3b j Power is transmitted most efficiently to the receiving coil L 2b1j When viewed from the side, the mutual inductance M 11-2 The first feed coil L is connected by 1b1j is an inductance of 2(L 1b1j / 2)=L 1b1j The current driving capacity is increased and distributed, and the mutual inductance M 12-2 The second feed coil L 1b2j is an inductance of 2(L 1b2j / 2)=L 1b2j This can be considered as an increase and distribution of current driving capability.

[0124] That is, receiving coil L 2b1j The coil current flowing through the receiving coil L 2b1j The mutual inductance M due to the magnetic field generated around 11-2 As a result, the first feeding coil L 1b1j The electromotive force is generated in the multiple coils for power supply, ΣL, which operate synchronously. 1bνj By configuring the first feeding coil L 1b1j is the inductance L 1b1j At the same time, the receiving coil L 2b1j The coil current flowing through the receiving coil L 2b1j The mutual inductance M due to the magnetic field generated around 12-2 As a result, the second feeding coil L 1b2j The electromotive force is generated in the multiple coils for power supply, ΣL, which operate synchronously. 1bνj By configuring the second feed coil L 1b2j is the inductance L 1b2j / 2 would be sufficient.

[0125] Furthermore, the first feed coil L, in which the coil current flows in the same direction, 1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 Qualitatively, the first feed side capacitor C 11j The first charge / discharge voltage V C11j reaches a minimum value, then starts to increase and increases again towards the saturation peak. Similarly, qualitatively, the second supply capacitor C 12j The second charging / discharging voltage V C12j After reaching a minimum value, begins to increase and then increases again towards the saturation peak. At this time, the receiving capacitor C 2j The terminal voltage V (receiving side charge / discharge voltage) is close to a minimum. However, in this situation, equation (43) is incorrect because it does not take mutual induction into account, and equations (46) and (48) derived from equation (43) are also incorrect. 1b1j and receiving coil L 2b1j The mutual inductance M 11-2 through the first feeding coil L 1b1j The primary circuit and secondary circuit 3b j The equivalent circuit X Leq Based on this, it is necessary to rewrite the equation (43). For example, the primary side network 2b j L on the side 1b1j -M 11-2 , secondary circuit 3b j L on the side 2b1j -M 11-2 Place L 1b1j -M 11-2 and L 2b1j -M 11-2 M at the connection node 11-2 is connected to the T-shaped circuit, and the first feeding coil L 1b1j The primary circuit and secondary circuit 3b j The equivalent circuit X Leq In other words, the correct way to do this is to include the mutual inductance M in equation (43). 11-2 It is necessary to add a differential term of the current with a coefficient of

[0126] First power supply capacitor C 11j The first charge / discharge voltage V C11j and the second power supply capacitor C 12j The second charging / discharging voltage V C12j reaches its saturation peak, the first driving element Q 11 and the second driving element Q 12 When these are turned on simultaneously again, the first power supply capacitor C 11j and the first feeding coil L 1b1j The first series-parallel resonant circuit is formed by the second power supply side capacitor C 12j and the second feeding coil L 1b2j As a result, the power supply voltage E0 of the DC power supply 5 is again input in a stepped manner to the first and second series-parallel resonant circuits simultaneously.

[0127] As before, in the first series-parallel resonant circuit, the first power supply capacitor C 11j The charging current flows from the power supply voltage E0 of the DC power supply 5 to the first power supply side capacitor C 11j The first charge / discharge voltage V C11j The result is R in equation (4a). 01ON The value is obtained by dividing the first power supply capacitor C 11j The first charge / discharge voltage V C11j In the second series-parallel resonant circuit, the step input causes the second power supply side capacitor C 12j The charging current flows from the power supply voltage E0 of the DC power supply 5 to the second power supply side capacitor C 12j The second charging / discharging voltage V C12j The result is R in equation (38a). 2ON The value is obtained by dividing the second power supply capacitor C 12j The second charging / discharging voltage V C12jHowever, when a step input is applied, the voltage begins to increase sharply upward from the saturation peak toward the voltage maximum value located at a higher level, so the increase curve has a two-step nodule-shaped increase profile with an extremum at the saturation peak. 1b1j generates a counter electromotive force to block the inflow of the coil current, and the second feeding coil L 1b2j generates a counter electromotive force to block the inflow of the coil current, but the first feed coil L, in which the coil current flows in the same direction, 1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 By generating a counter electromotive force, the first driving element Q 11 and the second driving element Q 12 When the first power supply coil L is turned on again, 1b1j and the second feeding coil L 1b2j The coil currents to and are zero.

[0128] The first power supply capacitor C tends to qualitatively follow the sine wave of equation (37). 11j The first charge / discharge voltage V C11j As the current gradually decreases, the first feeding coil L 1b1j The back electromotive force of the first feeding coil L 1b1j Similarly, the coil current begins to flow through the second supply capacitor C 12j The second charging / discharging voltage V C12j As the current gradually decreases, the second feed coil L 1b2j The back electromotive force of the second feeding coil L 1b2j The coil current starts to flow to the first feed coil L 1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 The first feed coil L 1b1j When the coil current starts to flow to the first power supply capacitor C 11j The first charge / discharge voltage V between both ends of the power supply side C11jqualitatively follows the sinusoidal waveform of Eq. (37), reaching a maximum value again and then decreasing slightly. Similarly, the second feeding coil L 1b2j When the coil current starts to flow to the second power supply capacitor C 12j The second charging / discharging voltage V between both ends of the power supply side C12j qualitatively follows the sinusoidal wave of Eq. (41b), reaching a maximum value again and then decreasing slightly.

[0129] First power supply capacitor C 11j and the second power supply capacitor C 12j After reaching its maximum value, the voltage across the first driving element Q starts to decrease again. 11 and the second driving element Q 12 When these are turned off simultaneously, the first power supply capacitor C 11j and the first feeding coil L 1b1j The closed loop formed by these components constitutes the first series resonant circuit, and the second power supply side capacitor C 12j and the second feeding coil L 1b2j The closed loop formed by these two coils constitutes the second series resonant circuit. The time when these two coils are turned off simultaneously is 1b1j When the coil current starts to flow through the first driving element Q 11 By cutting off the first feeding coil L 1b1j The back electromotive force generated in the first driving element Q 11 The voltage applied to the first driving element Q 11 The time is set so that the second feeding coil L 1b2j When the coil current starts to flow through the second driving element Q 12 By cutting off the second feeding coil L 1b2j The back electromotive force generated in the second driving element Q 12 The voltage applied to the second driving element Q 12 Choose a time for simultaneous turn-off so that the two power supplies are not damaged.

[0130] First driving element Q 11 and the second driving element Q 12 After the first power supply capacitor C 11jto the first feed coil L 1b1j The coil current flows through the second power supply capacitor C 12j to the second feed coil L 1b2j The first power supply capacitor C starts to discharge fully. 11j The electromagnetic energy stored in the first feeding coil L 1b1j The second power supply capacitor C 12j The electromagnetic energy stored in the second feeding coil L 1b2j The first power supply capacitor C 11j The first charge / discharge voltage V between both ends of the power supply side C11j begins to decrease toward a minimum value, qualitatively following the non-sinusoidal curve of equation (37), and the second feed-side capacitor C 12j The second charging / discharging voltage V between both ends of the power supply side C12j starts to decrease toward a minimum value, qualitatively following the non-sinusoidal curve of Eq. (53). At this time, the first feeding coil L 1b1j The coil current flowing through the first feed coil L 1b1j The magnetic field generated around the 11-2 The receiving coil L coupled with 2b1j At the same time, an electromotive force is generated in the second feeding coil L 1b2j The coil current flowing through the second feed coil L 1b2j The magnetic field generated around the 12-2 The receiving coil L coupled with 2b1j An electromotive force is generated in the first feeding coil L, causing a coil current to flow. 1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 are joined together.

[0131] At this time, the primary side circuit network 2b j The first feed coil L 1b1j The primary circuit and secondary circuit 3b j If the transient response characteristics of the receiving capacitor C are balanced, the transmitted power can be most efficiently 2jis charged. That is, the primary side circuit network 2b j From secondary circuit 3b j This power receiving coil L 2b1j The coil current flowing through the receiving coil L 2b1j The mutual inductance M of the magnetic field generated around 11-2 The first feeding coil L 1b1j An electromotive force is generated in the receiving coil L 2b1j The coil current flowing through the receiving coil L 2b1j The mutual inductance M of the magnetic field generated around 12-2 The effect of the second feeding coil L 1b2j The first feeding coil L 1b1j and the second feed coil L 1b2j is the mutual inductance M 11-12 are joined together.

[0132] That is, the first power supply side capacitor C 11j The first charge / discharge voltage V C11j Qualitatively, as shown by the non-sinusoidal curve of equation (37), the second supply capacitor C decreases, becomes negative again, and reaches a minimum value. 12j The second charging / discharging voltage V C12j Qualitatively, as shown by the non-sinusoidal curve of equation (53), the first power supply capacitor C decreases, becomes negative again, and reaches a minimum value. 11j The first charge / discharge voltage V C11j When the value of the first feeding coil L becomes negative, it is possible to qualitatively approximate the non-sinusoidal curve of Eq. (37). 1b1j The electromagnetic energy stored in the first power supply capacitor C 11j Similarly, the second power supply capacitor C 12j The second charging / discharging voltage V C12j becomes negative, qualitatively following the non-sinusoidal curve of Eq. (53), the second feed coil L 1b2j The electromagnetic energy stored in the second power supply capacitor C 12j Therefore, the first power supply capacitor C 11j The first charge / discharge voltage V C11jAs shown qualitatively in the nodular non-sinusoidal curve of equation (37), the second supply capacitor C 12j The second charging / discharging voltage V C12j Qualitatively, as shown by the knotted non-sinusoidal curve in Eq. (53), ρ starts to increase from a minimum value due to the circulating current, becomes positive, and then increases toward a saturation peak.

[0133] When this voltage reaches its saturation peak again, the first drive element Q 11 When these are turned on simultaneously again, the first power supply capacitor C 11j The first charge / discharge voltage V C11j When a step input is applied, the voltage begins to increase sharply upward from the saturation peak to the voltage maximum value located above that level, so the growth curve has a two-step nodule-shaped growth profile with an extreme value at the saturation peak. 11 The second driving element Q 12 When both are turned on at the same time again, the second power supply capacitor C 12j The second charging / discharging voltage V C12j However, when a step input is applied, a sudden upward convex increase begins from the saturation peak toward the voltage maximum value located at the level above it, so the increase curve becomes a two-step hump-shaped increase profile with an extreme value at the saturation peak.

[0134] As described above, the first charging / discharging voltage V on the power supply side tends to follow the nodular non-sinusoidal curve of Equation (37). C11j increases, and the first charge / discharge voltage V C11j reaches its saturation peak, the first driving element Q 11 Turn on the power supply side first charge / discharge voltage V C11j After reaching a maximum value following the sine wave of equation (37), the first driving element Q 11 The first charge / discharge voltage V on the power supply side is turned off to define the "power transmission cycle." The first charge / discharge voltage V on the power supply side tends to follow the nodular non-sinusoidal curve of equation (53). C11j increases, and the second charging / discharging voltage VC12j reaches its saturation peak, the second driving element Q 12 Turn on the power supply side second charge / discharge voltage V C12j After reaching a maximum value following the sine wave of equation (41b), the second driving element Q 12 In the absence of mutual induction, the basis of the power transmission cycle is the natural angular frequency ω of the first series-parallel resonant circuit, which is represented by the sine wave in equation (37). ON1b and the natural angular frequency ω of the first series resonant circuit indicated by the nodular non-sinusoidal curve of equation (48). OFF1j As shown in equation (30c), ω ON1b =(L 1b1j C 11j ) -1 / 2 and ω OFF1j =(L 1b1j C 11j ) -1 / 2 Similarly, in the absence of mutual induction, the natural angular frequency ω of the second series-parallel resonant circuit indicated by the sine wave of equation (41b) is ON2b is expressed as ω as shown in equation (39c). ON2b =(L 1b2j C 12j ) -1 / 2 and the natural angular frequency ω of the second series resonant circuit shown by the nodular non-sinusoidal curve in equation (53) is OFF2j is ω OFF2j =(L 1b2j C 12j ) -1 / 2 These are the basis for the frequency that determines the transmission cycle.

[0135] However, as mentioned above, the receiving coil L 2b1j When viewed from the side, the mutual inductance M 11-2 The first feed coil L is connected by 1b1j is a self-inductance of 2(L 1b1j / 2)=L 1b1j It is electromagnetically equivalent to a coil with increased current driving capacity and distributed current. 2b1j When viewed from the side, the mutual inductance M 12-2 The second feed coil L1b2j is a self-inductance of 2(L 1b2j / 2)=L 1b2j It is electromagnetically equivalent to a coil with increased current driving capacity and distributed current. Therefore, in practice, the effective transmission inductance L eff1 and the first feeding coil L 1b1j The self-inductance of L 1b1j / 2, and the second feed coil L 1b2j The self-inductance of L 1b2j As a result, the first feed coil L 1b1j and the second feed coil L 1b2j If there is mutual induction between the first series-parallel resonant circuit, the natural angular frequency ω ON1m , the natural angular frequency ω of the first series resonant circuit OFF1mj , the natural angular frequency ω of the second series-parallel resonant circuit ON2m and the natural angular frequency ω of the second series resonant circuit OFF2mj are, respectively, ω ON1m ={2 / (L 1b1j C 11j )} 1 / 2 ……(56a) ω ON2m ={2 / (L 1b2j C 12j )} 1 / 2 ...(56b) ω OFF1mj ={2 / (L 1b1j C 11j )} 1 / 2 ...(56c) ω OFF2mj ={2 / (L 1b2j C 12j )} 1 / 2 ……(56d) It can be said that:

[0136] That is, the equations (56a) to (56d) are expressed as follows: 1b1j and the second feed coil L 1b2j When there is mutual induction between the eff1 to a predetermined required value, and the natural angular frequency ωON1b , ω OFF1j , ω ON2b and ω OFF2j In both cases, the frequency can be increased by √2 times. However, the natural angular frequency ω ON1m , ω OFF1mj , ω ON2m and ω OFF2mj is the receiving coil L 2b1j Mutual inductance M 11-2 and M 12-2 It should be noted that this is a simplified calculation that ignores the above, and therefore, strictly speaking, it is not √2 times (see equations (66b) and (67a) to be described later). In the parallel transmission system according to the second embodiment, the first feeding coil L 1b1j and the second feed coil L 1b2j The power supply multiple coils ΣL operate synchronously with the power supply resonant circuit to generate mutual induction between 1bνj Therefore, the effective transmission inductance L required for the contactless power transmission system is eff1 This provides the remarkable effect of maintaining the required value and increasing the equivalent transmission power (amount of power transmitted) by √2, enabling parallel transmission from the power supply resonant circuit to the power receiving resonant circuit. The first power supply resonant circuit increases the equivalent transmission power by √2, and the second power supply resonant circuit increases the equivalent transmission power by √2, so that the overall amount of power transmission can be increased by 2√2.

[0137] If we ignore the effect of frequency, the amount of power transmitted will be doubled. However, compared to a single-turn coil, this means that the magnetic field strength H has doubled according to Biot-Savart's law, and the transmission distance L T Therefore, as explained using FIG. 1D, the power supply multiple coil ΣL is attached to the ceiling 91 of the station facility. 1bνj When the transmission distance L T 7A and 7C, the first feeding coil L 1b1j and the second feed coil L 1b2j The two multiple coils have a mutual inductance M 11-12The case where mutual induction is performed on the same plane or curved surface has been described as a representative example. However, the number of multiple coils in the multiple coils that perform mutual induction on the same plane or curved surface is not limited to two as shown in Figures 7A and 7C. That is, when ξ is a positive integer of 2 or more, as shown in Figure 7B, the number of multiple coils for power supply ΣL that operate synchronously is ξ. 1bνj In FIG. 7B, the first feeding coil L 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L 1bξj 7B illustrates a case where the first feeding coil L is arranged close to the first feeding coil L so as to mutually induce each other. 1b1j The left side of the page, excluding the first feed coil L 1b1j The first coil current supply circuit supplies coil current to the second power supply coil L 1b2j The left part excluding the second feed coil L 1b2j The second coil current supply circuit supplies coil current to the third power supply coil L 13 The left part excluding the third feed coil L 1b3j The third coil current supply circuit supplies a coil current to the (ξ-1)-th power supply coil L. 1b,(ξ-1)j The left part of the paper excluding the (ξ-1)th feeding coil L 1b,(ξ-1)j The (ξ-1)th coil current supply circuit supplies coil current to the ξth power supply coil L 1bξj The left part excluding the ξ feeding coil L 1bξj 7B, the effective transmission inductance L eff1 is expanded to the case of ξ>2, and the first feeding coil L 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L1bξj The inductance value of each of these can be reduced to 1 / ξ.

[0138] Synchronously operated multiple coils for power supply ΣL 1bνj In the mounting structure, the first feeding coil L 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L 1bξj The fact that the inductance value of each of the first feeding coil L can be reduced to 1 / ξ 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L 1bξj This means that the lengths of the inductors can be shortened to 1 / ξ. As a result, the parasitic resistance inherent in each inductance can be equivalently reduced to 1 / ξ. From the perspective of the DC power supply 5, the circuit configuration shown in FIG. 7B is equivalent to ξ resistors with a resistance value of 1 / ξ being connected in parallel, and the equivalent parasitic resistance is further reduced to 1 / ξ, so 1 / ξ × 1 / ξ = 1 / ξ 2 This has the remarkable effect of reducing the parasitic resistance of the coil.

[0139] In other words, if the effect of frequency is not taken into consideration, the amount of power transmitted is increased by ξ times, which means that the magnetic field strength H is increased by ξ times, and the transmission distance L T Therefore, the power supply multiple coil ΣL 1bνj In the situation where the transmission distance L T Even if the first feeding coil L 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L 1bξj When there is mutual induction between each of the 1st to ξth series-parallel resonant circuits, the natural angular frequency ω ON1m ~ω ONξmand the natural angular frequency ω of the first to ξ series resonant circuits OFF1mj ~ω OFFξmj Therefore, in the parallel transmission system according to the second embodiment, the first power feeding coils L arranged in parallel as shown in FIG. 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1b,(ξ-1)j , and ξ power supply coil L 1bξj The power supply multiple coils ΣL operate in synchronization with the power supply resonant circuit so that each of them is mutually inductive. 1bνj By configuring the effective transmission inductance L required for the contactless power transmission system, eff1 This has the remarkable effect of maintaining the required value, increasing the equivalent power transmission amount by √ξ times, and enabling parallel transmission from multiple power supply side resonant circuits to power receiving side resonant circuits. The increase in the power transmission amount by √ξ times means that the magnetic field strength H has increased by √ξ times compared to a single-turn coil according to Biot-Savart's law, and the transmission distance L T Therefore, as explained using FIG. 1D, the power supply multiple coil ΣL is attached to the ceiling 91 of the station facility. 1bνj When the transmission distance L T Even if the frequency fluctuates arbitrarily, high transmission efficiency can be maintained.

[0140] First feed coil L 1b1j , second feeding coil L 1b2j , the third feeding coil L 1b3j , ..., the (ξ-1)th feeding coil L 1,(ξ-1) , and ξ power supply coil L 1ξAs a result of each power supply resonant circuit corresponding to each of the ξ power supply resonant circuits increasing their power transmission capacity by √ξ times, a remarkable effect can be achieved in that the power transmission capacity of the ξ power supply resonant circuits as a whole can be increased by ξ√ξ times, as shown by the solid line in Fig. 8. The two-dot chain line in Fig. 8 shows the relationship between the power transmission capacity and time in the prior art described in Patent Document 2. As shown by the two-dot chain line in Fig. 8, if the power transmission capacity at a predetermined time in the prior art is W0, it can be seen that the parallel transmission system according to the second embodiment can transmit a power capacity of (ξ√ξ)W0 compared at the predetermined time, as shown by the solid line. Note that in a multiplex circuit configuration having ξ power supply resonant circuits, the parasitic resistance value in each power supply resonant circuit is set to 1 / ξ 2 Therefore, a significant effect can be achieved in that the power loss of the ξ power supply side resonant circuits as a whole can be reduced to 1 / ξ.

[0141] The dotted line in Figure 8 shows the first power supply side capacitor C 11j The broken line shows the case where the capacitance of the first power supply side capacitor C is increased by ξ times. 11j The electrostatic energy stored in is: W0=(1 / 2)C 11j (V C11j ) 2 ...(57) Therefore, the first power supply capacitor C 11j Capacity C 11j However, as shown in equation (30c), the natural angular frequency ω ON1b is ω ON1b =(L 1b1j C 11j ) -1 / 2 Therefore, the number of power transmission cycles that can transmit power within a given time is 1 / √ξ times. 11j Capacity C 11j The dashed line in Figure 8 shows that even if the power consumption is multiplied by ξ, the amount of power that can be transmitted within a given time is only ξ×1 / √ξ=√ξ times.

[0142] (Mutual inductance of multiple spiral coils) Not limited to the technology described in Patent Document 2, in general contactless transmission systems, a disk-shaped inductive power supply board 12 shown in FIG. j Multiple power supply coils ΣL built into 1bνj and disc-shaped inductive receiving boards 11 j The receiving coil L 2b1j A disk-shaped planar spiral coil is used for the inductive power supply board 12. j Multiple power supply coils ΣL built into 1bνj As an example, a multi-coil ΣL for power supply is used, in which the oval spiral is inserted into the gap of the other oval spiral in a crosswise manner. 1bνj Specifically, the first feeding coil L 1b1j The adjacent second feeding coil L fills the gap between the oval spirals of the mosquito coil. 1b2j The elliptical spiral pattern is inserted in a crosswise manner within the same plane or the same curved surface to form a multi-coil for power supply ΣL 1bνj The first feeding coil L 1b1j and the second feeding coil L 1b2j are conductors that have the same coil width and are adjacent to each other in a nested manner. 1bνj In FIG. 7C, the inductive power receiving board 11 j and inductive receiving board 11 j The effective transmission area (active area) S is defined as the effective opposing area of eff Within the coil, two multiple coils are nested and multiply crossed, spaced apart by a uniform gap Δ, to form a closely packed parallel inductance.

[0143] Effective transmission area (active area) S eff While maintaining the coil width W s In a densely packed arrangement in which two multiple coils are nested and crossed, the length of the coils is inevitably halved due to the occupied area. 1b1j and the second feed coil L 1b2jIn this example, the planar patterns of the coils ΣL are electrically insulated from each other via a fixed gap Δ. However, the narrow uniform gap Δ shown in Fig. 7C can be filled with an insulator, and the coils ΣL are nested and multiply intersecting so as to be densely packed within the same plane or the same curved surface. 1bνj A densely packed spiral coil with the gap Δ removed via an insulator can maintain its shape by using a self-bonding wire to bond the coils together on the same plane or on the same curved surface, making it possible to eliminate the need for a coil tray for winding. This makes it easier to automate the process of multiple windings on the same plane or on the same curved surface, allowing for significant reductions in manufacturing costs.

[0144] For example, the first feeding coil L 1b1j The elliptical spiral of is shown in polar coordinates as follows: r=aθ ……(58a) The second feeding coil L can be approximately expressed as an Archimedes spiral (uniform spiral). 1b2j The elliptical spiral of is shown in polar coordinates as: r=a(θ-π)+ κ ……(58b) The constant κ in the second term on the right side of Equation (58b) is the second feeding coil L 1b2j The reference point for determining the center of the spiral of the first feed coil L 1b1j This is the deviation of the elliptical spiral from the reference point.

[0145] At the right end of Fig. 7C, two parallel lines bent in an L shape and pointing vertically upward are the first feed coil L 1b1j and the second feed coil L 1b2j The first lead wire is made up of two wires connected to one end of each of the first and second coil terminals. Similarly, two parallel wires extending leftward from the center of the central spiral in FIG. 7C, bending in an L-shape, and pointing vertically upward are the first feed coil L. 1b1j and the second feed coil L 1b2jThe second lead wire is composed of two wires connected to the other end of each of the first and second coil terminals via the second coil terminal portion. Although the position and structure of the first and second coil terminals are not shown in FIG. 7C, various well-known electrical connection terminals such as plug connectors, crimp sleeves, one-touch connectors, screw terminals, and bullet terminals can be used. The locations and structures of the first and second coil terminals can be selected and specified as desired based on the design specifications and the technical common sense of those skilled in the art. For convenience of connection to the first lead wire, it is preferable that multiple first coil terminals are arranged adjacent to each other, and for convenience of connection to the second lead wire, it is preferable that multiple second coil terminals are arranged adjacent to each other. The first and second coil terminals are connected to the multiple feed coil ΣL. 1bνj Inductive power supply board 12 j or inductive power supply board 12 j Mutual induction occurs in the first lead wire and the second lead wire other than the part forming the Archimedes spiral when they are arranged close to each other and current flows in the same direction. j In the mounting wiring, mutual induction occurs in the circuit wiring of the first power supply side resonant circuit and the second power supply side resonant circuit, which are arranged close to each other and through which current flows in the same direction.

[0146] According to the parallel transmission system of the second embodiment, by selecting a drive period that allows both packet-like transient response vibrations to resonate in harmony with the natural vibrations, it is possible to improve the power transmission efficiency and transmit a large amount of energy in parallel in a short time. 1aj and receiving coil L 2aj Since effective wireless parallel power transmission is possible even when the distance between the railcar and the edge of the platform structure serving as the boarding / alighting area is 400 mm or more, efficient parallel power transmission is possible even when the distance between the railcar and the edge of the platform structure serving as the boarding / alighting area varies depending on the state of passengers, etc. Furthermore, according to the parallel transmission system of the second embodiment, by using multiple coils to increase the power transmission frequency, it is possible to theoretically push the limit power of power transmission to infinity, theoretically extend the limit distance of power transmission to infinity, and theoretically increase the power transmission efficiency to a value close to 100%.

[0147] If the number of multiplexed coils is ξ = 2, and m = 8, p = 11 in equation (2), and m receiving coils are periodically distributed as part of the power receiving circuit in all railway cars, the number of power supply coils on the corresponding power supply device side will be n rvs = 176. Therefore, if m receiving coils are periodically distributed as part of the receiving circuit in each of the eight railway cars, the number of transmitting coils will be n rvswe = 64 sets, and two sets can be distributed periodically within an 11-car formation. If the charging voltage is V1 = 20 V and the step-up coefficients are ρ1 = ρ2 = 4 and ρ3 = 2, then from equation (3c) the driving voltage is Va(1 to 64) = 20 × 32 = 640 V, so the voltage of the DC power supply 5 of the parallel transmission system can be lowered to 20 V, thereby improving safety for passengers moving over the platform.

[0148] When the number of multiplexed coils is ξ = 2, the amount of power transmission increases by ξ√ξ = 2√2 = 2.8 times as shown in Figure 8. For example, compared to the energy that each spiral coil can efficiently transmit in parallel using its natural vibration harmonic, multiplexing allows for even more efficient parallel transmission of 250kWs = 250kJ of electromagnetic energy. In this case, the entire 11-car electric train has n power supply coils. rvswe Therefore, according to the parallel transmission system of the second embodiment, it is possible to transmit energy in parallel of 2×64×250×30=960 MJ during a 30-second stop time. Furthermore, according to the parallel transmission system of the second embodiment, if the number of multiplexed lines is ξ, the parasitic resistance of the power supply coil becomes 1 / ξ 2Therefore, the load on cooling the power supply coil can be reduced. According to the parallel transmission system of the second embodiment, an expensive AC power supply circuit such as a switching power supply is not required for the power supply device, and an inexpensive DC power supply 5 with a simple and compact structure can be used for the power supply device. Therefore, even when a large amount of energy such as 960 MJ or more is required to supply power to an 11-car electric train, for example, the DC power supply 5 that forms the basis of the power supply device can be prepared inexpensively and with high reliability. Therefore, according to the parallel transmission system of the second embodiment, station facilities equipped with highly reliable power supply devices can be constructed inexpensively and easily, and the physical configuration of the power supply devices can be made space-saving, which allows for greater flexibility in the placement of the power supply devices within the station premises and simplifies system installation.

[0149] (Third embodiment) As shown in FIG. 10B, the electric train according to the third embodiment of the present invention comprises a plurality of railway cars 311, . . . , 31 q It consists of multiple storage units U C1 ,U C2 ,U C3 ,U C4 ,……,U C(r-1) ,U Cr , railway cars 311, ......, 31 q Although not shown in the figure, in the electric train according to the third embodiment, the power storage units U C1 ,U C2 ,U C3 ,U C4 ,……,U C(r-1) ,U Cr In the parallel transmission system according to the second embodiment described above, as shown in Figs. 7A and 7B, an example has been shown in which a plurality of multiple coils are distributed in the primary circuit network so that each of them constitutes a primary circuit. In contrast, in the parallel transmission system used in an electric train according to the third embodiment of the present invention, as shown in Figs. 9A and 9B, a plurality of power supply multiple coils are closely arranged on the same plane or the same curved surface, and a set of a plurality of power supply multiple coils is connected to a power supply unit U. Tj(The subscript j is a positive integer greater than or equal to 1.)

[0150] As explained in the second embodiment, the term "same plane" refers to a curved surface where both the Gaussian curvature and the mean curvature are zero (the radius of curvature is infinite). However, more generally, a configuration may be possible in which a plurality of η power supply multiple coils forming non-planar (curved) patterns are closely arranged within the same curved surface, such as a part of a cylindrical surface, a part of a spherical surface, a part of an ellipsoidal surface, or a part of a parabolic surface. Although not shown in the drawings, the vehicle body 31a shown in the above-mentioned FIG. 1A and FIG. 6 k The parallel transmission system according to the third embodiment may have a three-dimensional structure in which a plurality of η power supply multiple coils, each of which has a curved surface pattern, are deployed in a curved shape along the curvature of the roof of the Tj Inductive power supply board 12 j The receiving coil L shown in Figs. 2bj Inductive power receiving board 11 j and are periodically distributed in the ceiling cavity of the passenger car body or on the roof of the car body, which is the same as the parallel transmission systems according to the first and second embodiments.

[0151] For example, in FIG. 9A, the power coil L 1b11 and the power coil L 1b21 The first feeding coil (ξ=2) consists of a feeding coil L 1b31 and the power coil L 1b41 A second feeding multiple coil (ξ=2) consisting of ... (omitted) ... and a feeding coil L 1b(n-1)1 and the power coil L 1bn1 A plurality (η pieces) of n-th power supply multiple coils (ξ=2) consisting of the following are arranged in close proximity to each other, forming a first power supply unit U T1 (η is a positive integer greater than or equal to 2.) ξ×η=n ……(59) In the parallel transmission system according to the second embodiment, ξ is a positive integer equal to or greater than 2, but in the parallel transmission system according to the third embodiment, ξ defined in equation (59) may be any positive integer equal to or greater than 1. That is, a configuration may be adopted in which a plurality of η single-turn power supply coils are closely arranged on the same plane or on the same curved surface, such as part of a cylindrical surface, part of a spherical surface, part of an ellipsoidal surface, or part of a parabolic surface.

[0152] On the other hand, in another example shown in FIG. 9B, the power supply coil L 1b1j , power coil L 1b2j and power supply coil L 1b3j The first feeding coil (ξ=3) consists of a feeding coil L 1b4j , power coil L 1b5j and power supply coil L 1b6j A second feeding multiple coil (ξ=3) consisting of ... and a feeding coil L 1b16j , power coil L 1b17j and power supply coil L 1b18j The sixth feeding multiple coil (ξ=3) consisting of a plurality of coils (η=6) is arranged close to each other, and the jth feeding unit U Tj The jth power supply unit U Tj constitutes the j-th inductive receiving board. In the configuration example shown in FIG. 9B, ξ×η=3×6=18 ……(60) is.

[0153] FIG. 9C is a conceptual schematic diagram showing a model of a part of the (j-1)th Archimedes' spiral and the jth Archimedes' spiral shown in FIG. 9B, which are close to each other. However, the (j-1)th Archimedes' spiral and the jth Archimedes' spiral are each approximated by a circular coil, and the model is based on the case where the (j-1)th set of circular coils and the jth set of circular coils, which form concentric circles, are close to each other. The line a (coil L) that constitutes the (j-1)th Archimedes' spiral is 1b3j ), b wire (coil L 1b2j ) and c wire (coil L 1b1j ) and the d wire (coil L1b1j ), e-wire (coil L 1b2j ) and f line (coil L 1b3j ) are modeled as being placed close to each other. In Figure 9C, the direction of the current flowing through lines a, b, and c that make up the (j-1)th Archimedes' spiral is set to be the same as the direction of the current flowing through lines d, e, and f that make up the jth Archimedes' spiral, so that the magnetic fluxes are superimposed.

[0154] Figure 9C shows the mutual inductance M between wire a and wire b. ab There exists a mutual inductance M between wires b and c. bc However, there is a mutual inductance M between wires c and d. cd However, there is a mutual inductance M between wires d and e. de However, there is a mutual inductance M between the e and f lines. ef Furthermore, Fig. 9C shows that there is a mutual inductance M ac There exists a mutual inductance M between wire b and wire d. bd However, there is a mutual inductance M between the d and f lines. df Furthermore, there is a mutual inductance M between the a and d wires. ad However, there is a mutual inductance M between wire b and wire e. be However, there is a mutual inductance M between the c and f lines. cf However, there is a mutual inductance M between wire a and wire e. ae However, there is a mutual inductance M between the b and f lines. bf However, there is a mutual inductance M between the a and f lines. af Figure 9C shows that there is a capacitance C between line a and line b. ab There is a capacitance C between wire b and wire c. bc However, there is a capacitance C between the c and d lines. cd However, there is a capacitance C between the d and e lines. de However, there is a capacitance C between the e and f lines. ef indicates that there is

[0155] In the explanation of the parallel transmission system according to the second embodiment, we have already explained that by using a multiple coil in which ξ spiral coils are multiplexed, each of the power supply side resonant circuits corresponding to the ξ spiral coils increases the amount of power transmission by √ξ times, and as a result, the power transmission amount of the ξ power supply side resonant circuits as a whole can be increased by ξ√ξ times as shown by the solid line in Fig. 8. By arranging a plurality of multiple coils (η coils) in which ξ spiral coils are multiplexed, as shown in Figs. 9A-9B, a power supply unit U Tj If we do not consider the effect of frequency, the amount of power that can be transmitted is (γ1·ξ)W0, compared to the conventional amount of power W0. Increasing the amount of power transmitted by (γ1·ξ) times means that, according to Biot-Savart's law, the magnetic field strength H has increased by (γ1·ξ) times compared to a single-turn coil, and the transmission distance L T Therefore, as explained with reference to FIG. 1D, the power supply unit U Tj When the transmission distance L T Even if the frequency fluctuates arbitrarily, high transmission efficiency can be maintained.

[0156] Furthermore, when the effect of frequency is taken into consideration, a power transmission amount of {(γ2·ξ)√(γ1·ξ)}W0 is possible over a given time period, as shown by the dashed line in Fig. 9D, compared to the conventional power transmission amount W0. The dashed line in Fig. 9D shows the time dependence of the power transmission amount when η multiple coils, each consisting of ξ spiral coils, are arranged closely to each other. The solid line in Fig. 9D shows the time dependence of the power transmission amount when a single multiple coil, consisting of ξ spiral coils, is arranged. Note that, similar to Figs. 9A-9B, a power supply unit U Tj Even if the power transmission amount is 1 / 2, the power transmission amount of {(γ2·ξ)√(γ1·ξ)}W0 can be realized, as shown by the dashed line in FIG. 9D.

[0157] γ1 and γ2 in Figure 9D are, respectively, γ1=β1·η ……(61a) γ2=β2·η ……(61b) β1 on the right side of equation (61a) and β2 on the right side of equation (61b) are parameters that depend on the geometric shape and layout design, such as the mutual distance when multiple multiple coils are arranged closely, and the area occupation efficiency when multiple multiple coils are arranged closely. When multiple multiple coils can be tiled on a plane and an ideal coil proximity effect can be obtained such that β1 = β2 ≒ 1, then γ1 = γ2 ≒ η. Also, when an ideal coil proximity effect can be obtained such that β1 = β2 ≒ 1, then the distance between one power supply unit U Tj Let the total number of spiral coils placed inside be ζ, ζ=ξ×η ……(62) This can be done.

[0158] That is, one power supply unit U Tj If an ideal coil proximity effect is obtained in which ζ planar spiral coils are arranged inside the plane so as to satisfy Eq. (62), then the power supply unit U Tj Similarly, the power transmission capacity of one power supply unit U Tj If ζ spiral coils with curved surfaces are arranged on the same curved surface so as to satisfy Eq. (62) and an ideal coil proximity effect is obtained, then the power supply unit U Tj The amount of power transmitted can be increased by ζ√ζ times. k The effective transmission area (active area) that can be installed in eff is the same as that of the parallel transmission system according to the second embodiment, the parallel transmission system according to the third embodiment allows for a η-fold increase in the density of the spiral coils. k The effective transmission area (active area) that can be installed in eff is the same as that of the parallel transmission system according to the first embodiment, this means that the parallel transmission system according to the third embodiment can achieve a ζ-fold higher density of spiral coils. TjIn this configuration, the parasitic resistance value is set to 1 / ζ in each power supply resonant circuit. 2 Therefore, the number of power supply units U Tj Overall, the power loss is reduced to 1 / ζ 2 For the purpose of tiling a plurality of multiple coils, the spiral coil pattern may be a regular hexagonal spiral.

[0159] FIG. 10B shows a train of q railcars 311, 312, 313, . . . , 31 k ,……,31 q (In Figure 10B, the second railway car 312, the third car 313, ..., the kth car 31 k 10B illustrates an example of a distributed power electric train in which some or all of the passenger cars are powered cars, but the electric train according to the third embodiment of the present invention may also be a concentrated power electric train in which an electric locomotive pulls or propels other non-powered cars. As shown in FIG. 10B, the parallel transmission system according to the third embodiment is a train in which railway cars 311, ..., 31 q The parallel transmission system of the third embodiment is similar to the parallel transmission systems of the first and second embodiments in that it is a multi-channel contactless power transmission system in which wavelet-shaped electromagnetic energy is supplied in parallel from a power supply device using natural vibration harmonics to a plurality of power receiving devices disposed in a distributed manner. For this reason, in the parallel transmission system of the third embodiment, the power supply device that supplies wavelet-shaped electromagnetic energy in parallel to a plurality of distributed power receiving devices includes a drive control circuit, as in the first and second embodiments. This drive control circuit includes a primary-side switching element drive circuit 340b and a DC power supply 5, as shown in Fig. 9A and Figs. 10A-10B.

[0160] In the example shown in FIG. 9A, the primary-side switching element drive circuit 340b is 11 ,Q 12 ,Q 13 ,Q 14 ,…….Q 1(n-1) ,Q 1nThe drive timing for switching the drive element Q is selected. 11 ,Q 12 ,Q 13 ,Q 14 ,…….Q 1(n-1) ,Q 1n A group of driving elements Q 11 ,Q 12 ,Q 13 ,Q 14 ,…….Q 1(n-1) ,Q 1n The set of these constitutes a primary side switching element group 341b. The primary side switching element drive circuit 340b is configured by the drive element Q shown in FIG. 11 , and a control signal is sent to the control terminal of the driving element Q to input a step of the DC voltage supplied from the DC power supply 5. 11 is turned on and off to turn on the power supply coil L 1b11 The power supply side resonant circuit including the driving element Q is operated in a separately excited manner. 12 A control signal is sent to the control terminal of the driver element Q 12 is turned on and off to turn on the power supply coil L 1b21 The power supply side resonant circuit including the above is operated in a separately excited manner. ...(omitted)...

[0161] Similarly, further driving element Q 12 A control signal is sent to the control terminal of the driver element Q 12 is turned on and off to turn on the power supply coil L 1b21 In the example shown in Fig. 9A, a coil current supply circuit network (340b, 341b, 5) of the parallel transmission system according to the third embodiment is configured with a primary side switching element drive circuit 340b, a primary side switching element group 341b, and a DC power supply 5. Fig. 9A shows a power supply unit U Tj 1 illustrates a coil current supply circuit network (340b, 341b, 5) that supplies synchronized coil currents to a plurality of power supply coils included in the j-th inductive power supply panel. Tj When paying attention to the above, the coil current supply circuit network (340b, 341b, 5) isTj Each of the power coils L 1b11 ,L 1b21 ,L 1b31 ,L 1b32 ,L 1b(n-1)1 ,L 1bn1 The coil current supply circuit network (340b, 341b, 5) is a set of n independent circuits that operate electrostatically independently from each other to supply synchronized coil currents to the power supply coils that make up the multiple inductive power supply panels. The coil current supply circuit network (340b, 341b, 5) periodically switches between a series-parallel transient response state and a series transient response state to each of the power supply coils that make up the multiple inductive power supply panels, supplying synchronized coil currents to each of the power supply coils. The coil current supply circuit network (340b, 341b, 5) is a set of multiple coil current supply circuits that operate electrostatically independently from each other to form a parallel circuit network.

[0162] On the other hand, in the example shown in FIG. 10A, the primary-side switching element drive circuit 340b is 11 ,Q 12 ,Q 13 ,Q 14 ,Q 15 ,Q 16 ,…….Q 116 ,Q 117 ,Q 118 Then, at the selected drive timing, the primary side switching element drive circuit 340b drives the drive element Q 11 ,Q 12 ,Q 13 ,Q 14 ,Q 15 ,Q 16 ,…….Q 116 ,Q 117 ,Q 118 In the example shown in FIG. 10A, a group of driving elements Q 11 ,Q 12 ,Q 13 ,Q 14 ,Q 15 ,Q 16 ,…….Q 116 ,Q 117 ,Q 118The set of the primary side switching element drive circuit 340b, the primary side switching element group 341b, and the DC power supply 5 constitutes the j-th power supply unit U of the parallel transmission system according to the third embodiment. Tj The coil current supply circuit networks (340b, 341b, 5) are configured for each of the coils.

[0163] In FIG. 10A, the jth power supply unit U Tj Each of the power supply coils constituting the power supply coils includes a power supply capacitor having one terminal connected to the other terminal of each of the switching elements arranged in the primary-side switching element group 341b. However, for the sake of simplicity, FIG. 10B does not show the circuit topology in which multiple power supply capacitors are connected. One terminal of the power supply capacitor, which is not shown for the sake of simplicity, is connected to the power supply unit U. Tj The other terminal of the power supply capacitor is connected to one terminal of the power supply unit U Tj The other terminal of the power supply side capacitor is connected to the low potential side terminal of the DC power supply 5, and the power supply unit U Tj The other terminals of the respective power supply coils are connected together.

[0164] The j-th power supply unit U shown in FIG. Tj An example of the configuration of each of the power supply coils is shown in Figure 9B. Referring to Figure 9B, the coil current supply circuit networks (340b, 341b, 5) of Figure 10A are each connected to a power supply unit U that constitutes an inductive power supply board. Tj Each of the power coils L 1b1j ,L 1b2j ,L 1b3j ,……,L 1b16j ,L 1b17j ,L 1b18j It can be seen that the multiple coil current supply circuits that supply coil current to the power supply coil L are a set that forms a parallel circuit network. 1b1j ,L 1b2j ,L1b3j ,……,L 1b16j ,L 1b17j ,L 1b18j The coil current supplying circuit network (340b, 341b, 5) supplies the coil currents synchronized with each other to the power supply unit U, but they operate electrostatically independently of each other. Tj As in the case of (1), a series-parallel transient response state and a series transient response state are periodically switched between to supply synchronized coil currents to each of the power supply coils that make up the power supply unit. Therefore, the coil current supply circuit network (340b, 341b, 5) is a set of multiple electrostatically independent coil current supply circuits that form a parallel circuit network. In other words, the coil current supply circuit network (340b, 341b, 5) is a parallel circuit network that periodically alternates between a series-parallel transient response state and a series transient response state to supply coil currents to each of the power supply coils that make up the multiple inductive power supply panels.

[0165] That is, the primary-side switching element drive circuit 340b is a 11 , and a control signal is sent to the control terminal of the driving element Q to input a step of the DC voltage supplied from the DC power supply 5. 11 is turned on and off to turn on the power supply coil L 1b1j The power supply side resonant circuit including the driving element Q is operated in a separately excited manner. 12 A control signal is sent to the control terminal of the driver element Q 12 is turned on and off to turn on the power supply coil L 1b2j The power supply side resonant circuit including the driving element Q is operated in a separately excited manner. 13 is turned on and off to turn on the power supply coil L 1b3j Similarly, the primary-side switching element drive circuit 340b further operates the power supply side resonant circuit including the drive element Q 118 is turned on and off to turn on the power supply coil L 1b18j The power supply side resonant circuit including the above is operated in a separately excited manner.

[0166] q-car train 311, ......, 31 shown in FIG. 10B q In the example, m=4 power supply units U T1 ,U T2 ,U T3 ,U T4 In response to this, the leading railway car 311 is equipped with an energy storage unit U C1 ,U C2 ,U C3 ,U C4 Although not shown in FIG. 10B, the power supply unit U T1 ,U T2 ,U T3 ,U T4 Corresponding to the above, four power receiving units are periodically distributed on the ceiling cavity or roof of the railway car 311, and each power receiving unit is connected to each of the distributed power storage units U C1 ,U C2 ,U C3 ,U C4 In addition, m=4 power supply units U T(r-3) ,U T(r-2) ,U T(r-1) ,U Tr Correspondingly, the qth railway vehicle 31 q Each of the storage units U C(r-3) ,U C(r-2) ,U C(r-1) ,U Cr 10B is a schematic diagram showing a configuration in which a power receiving device having a power supply unit U T(r-3) ,U T(r-2) and storage unit U C(r-3) ,U C(r-2) Although not shown in FIG. 10B, four power supply units U T(r-3) ,U T(r-2) ,U T(r-1) ,U Tr Four power receiving units are installed in the railway vehicle 31 q are periodically distributed on the ceiling cavity or roof, and each power receiving unit is connected to each of the distributed power storage units U C(r-3) ,U C(r-2) ,U C(r-1) ,U CrIt forms part of the power receiving circuit network corresponding to

[0167] In reality, each railcar that makes up an electric train k A distribution number m of power receiving units are distributed to each of the power receiving units, and a distribution number m of power supply units are installed at the platform of the station facility in a one-to-one relationship with each of the power receiving units. Therefore, in FIG. 10B, m=4 power supply units U T1 ,U T2 ,U T3 ,U T4 It shows that m multiplexed cables are connected from the primary side switching element group 341b to the platform. Each of the m multiplexed cables is a bundle of ζ transmission lines of equation (62). Similarly, m=4 power supply units U T(r-3) ,U T(r-2) ,U T(r-1) ,U Tr 10B, m multiplexed cables are connected from the primary side switching element group 341b to the railcar 31. k For each of the above, the number m of power supply units distributed and installed above the boarding and alighting areas of the station facility may be a positive integer of 1 or more. However, in practice, a value of about m=8 is selected as the number of power supply units distributed. In FIG. 10B, a coil current supply circuit network (340b, 341b, 5) of the parallel transmission system according to the third embodiment is configured with a primary-side switching element drive circuit 340b, a primary-side switching element group 341b, and a DC power supply 5.

[0168] In addition, in FIG. 10B, U T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr Each of the power supply side capacitors has one terminal connected to the other terminal of each of the switching elements arranged in primary side switching element group 341b, but this is not shown for convenience. T1 ,U T2,U T3 ,U T4 ,……,U T(r-1) ,U Tr The other terminal of the power supply capacitor is connected to one terminal of the power supply coil of U T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The other terminal of the power supply coil is connected to the other terminal of each of the power supply coils. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The coil current supply circuit networks (340b, 341b, 5) are connected to the low potential side terminal of the DC power supply 5 together with the other terminal of each of the power supply coils. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The coil current supply circuit network (340b, 341b, 5) constitutes a parallel circuit network of a plurality of coil current supply circuits that operate electrostatically independently of each other.

[0169] For example, in the configuration illustrated in FIG. 9B, when ξ=4, η=6, and the number of distributions of the power supply unit is set to m=8, if an ideal coil proximity effect is obtained, the transmission amount will be (γ2·ξ)√(γ1·ξ)=24√24=118 times due to mutual inductance. k The total number of power transmission coils included in all power transmission units that are set one-to-one to the power receiving devices distributed to n rvm =ξ×η×m=4×6×8=192 ……(63a) Equation (63a) is the total weight of one railway car 31 kCorresponding to this, the number of distributions m = 8 power supply units U T(k-7) ,U T(k-6) ,……,U Tk The total number n contained in rvm This indicates that electromagnetic energy can be transmitted in parallel to multiple receiving devices without contact from 192 power supply coils.

[0170] And, if an ideal coil proximity effect is obtained, the total number n rvm = 192 power supply coils to the corresponding power receiving devices, the wavelet-shaped electromagnetic energy transmitted in parallel without contact is 118 times. Also, from Figure 9D, when γ1 = γ2 ≒ 0.5η, the transmission amount is (γ2 ⋅ ξ)√(γ1 ⋅ ξ) = 12√12 = 41.6 times, and the total number n rvm = 192 waves of electromagnetic energy are emitted from each of the 31 corresponding railway vehicles. k The power can be transmitted in parallel to each of the receiving coils.

[0171] Also, when ξ=4, η=8, m=8, one railway car31 k The total number of power transmission coils included in all power transmission units that are set one-to-one to the power receiving devices distributed to n rvm =ξ×η×m=4×8×8=256 ……(63b) If an ideal coil proximity effect can be realized when ξ=4, η=8, and m=8, the transmission amount will be 32√32=181 times due to mutual inductance. Equation (63b) shows that when the number of power supply units distributed and installed above the platform is m=8, the total number n rvm = 256 power supply coils, corresponding to 31 railway vehicles k This shows that it is possible to wirelessly transmit power in parallel to each of the power receiving devices implemented in the device at a rate 181 times that of a single power supply coil.

[0172] In the case of ξ=4,η=8,m=8, one railcar31 kIn response to this, if a total of 256 spiral coils are installed above the boarding area, and if we focus on two power supply units, the number of power supply coils will be n rvm = 64. In other words, when ξ = 4 and η = 8, the number of feeding coils n rvm = 64 pairs of power supply units are placed in one railcar. k Correspondingly, four pairs can be mounted above the platform, making the number of distributions of power supply units m = 8. If the boost coefficients ρ1 = ρ2 = 4 and ρ3 = 2 are set for each of the two pairs of power supply units mounted above the platform, then from equation (3c), the drive voltage output by the distributed energy storage boost system is Va(1-64) = 20 × 32 = 640 V. Therefore, the voltage of the DC power supply 5 used in the power supply device of the parallel transmission system according to the third embodiment can be reduced to 20 V, thereby improving the safety of passengers traveling above the platform.

[0173] 9D , if γ1 = γ2 ≈ 0.5η, the power transmission amount of each power supply coil can be increased by (γ2 · ξ)√(γ1 · ξ) = 16√16 = 64 times. If the electric train has 11 cars under the conditions of ξ = 4, η = 8, and m = 8 shown in Equation (63b), the total number of power supply coils supplying power to the electric train is 256 × 11 = 2816. According to the parallel transmission system of the third embodiment, assuming that the power transmission capacity of each power supply coil is increased by 64 times and that each coil can transmit 10 kWs = 10 kJ without contact, a parallel transmission of energy of 2816 × 10 × 30 = 844.8 MJ can be achieved during a 30-second stoppage of the electric train. Furthermore, in the parallel transmission system according to the third embodiment, the parasitic resistance value can be reduced to 1 / ζ by arranging ζ=ξ×η power supply coils closely together to form a power supply unit. 2This significantly reduces the cooling load on the power supply coil. According to the parallel transmission system of the third embodiment, an expensive AC power supply circuit such as a switching power supply is not required for the power supply equipment, and an inexpensive DC power supply 5 with a simple, compact structure can be used for the power supply equipment. Therefore, even if a large amount of energy, such as 844.8 MJ or more, is required to supply power to an 11-car electric train, the DC power supply 5 that forms the basis of the power supply equipment can be prepared inexpensively and with high reliability. Therefore, according to the parallel transmission system of the third embodiment, station facilities equipped with highly reliable power supply equipment can be constructed inexpensively and easily, and the physical configuration of the power supply equipment can be made space-saving, which allows for greater flexibility in the placement of the power supply equipment within the station premises and simplifies system installation.

[0174] (Fourth embodiment) In the parallel transmission system according to the second embodiment, as shown in FIG. 7A etc., an example was shown in which only the primary side circuit network is made up of multiple coils. However, in the case of a railway vehicle 31 in which a plurality of power receiving devices (secondary side circuit networks) are periodically distributed, k In a multi-channel contactless power transmission system that supplies electromagnetic energy in parallel from a plurality of corresponding power supply devices (primary side circuit networks) using natural vibration harmonics, it is easier to design the natural vibration harmonics when the natural angular frequencies of the power receiving device and the power supply device are equal. Therefore, multiple coils may be set in both the primary side circuit network and the secondary side circuit network to facilitate the design of the natural vibration harmonics. Although not shown in the figure, the vehicle body 31a shown in the above-mentioned Figs. 1A and 6 k If the inductive power supply panel having multiple power supply coils is configured as a curved surface pattern that follows the curvature of the roof of the vehicle, the opposing inductive power receiving panel will also k Multiple coils are set on the curved surface of the roof with a curvature radius of approximately 1 m or less.

[0175] Furthermore, in the parallel transmission system according to the third embodiment, as shown in Figs. 9A and 9B, an example was shown in which a power supply unit is configured by arranging multiple coils in close proximity only in the primary circuit network. However, in a multi-channel contactless power transmission system in which electromagnetic energy is supplied from an inductive power supply panel to an inductive power receiving panel at natural vibration harmonics, it is easier to design the natural vibration harmonics if the natural angular frequencies of the power receiving device and the power supply device are equal. For this reason, in the parallel transmission system according to the fourth embodiment of the present invention, as shown in Fig. 11A, multiple coils are arranged in close proximity on the same plane in both the primary circuit network and the secondary circuit network to configure the power receiving unit, thereby facilitating the design of the natural vibration harmonics. Although not shown, the vehicle body 31a shown in Figs. 1A and 6 described above k If an inductive power supply panel is constructed by arranging multiple η power supply coils in a curved pattern closely together on the same curved surface along the curvature of the roof, the opposing inductive power receiving panel will also be an inductive power receiving panel with a structure in which multiple coils are arranged closely together on a curved surface.

[0176] As explained in the parallel transmission system according to the third embodiment, ξ defined in equation (59) may be any positive integer equal to or greater than 1. Therefore, in the inductive power supply panel and the inductive power receiving panel constituting the parallel transmission system according to the fourth embodiment, a plurality of η single-turn coils may be arranged adjacent to each other on the same plane or on the same curved surface. In any case, in the parallel transmission system according to the fourth embodiment, the first power supply coil L 1c1 , second feeding coil L 1c2 , ... are multiplexed to form a power supply multiple coil, and are arranged close to each other. T1 This constitutes the first inductive power supply panel.

[0177] Furthermore, as shown by the dashed rectangle in FIG. 11A, the first receiving coil L 2c1 , second receiving coil L 2c2 , …… are multiplexed and arranged in close proximity to each other, forming a first power receiving unit U R1 The first power receiving unit U R1 First power supply unit U T1That is, the first power receiving unit U that constitutes the first inductive power receiving panel R1 The first inductive power supply unit U T1 Although not shown in the figure, it is also opposed to ... (omitted) .... Furthermore, in FIG. 11A, the (n-1)th feeding coil L 1c(n-1) (not shown), the nth feeding coil L 1cn A plurality of power supply multiple coils consisting of Tr and the (n-1)th receiving coil L 2c(n-1) (not shown), the nth receiving coil L 2cn A plurality of power receiving multiple coils consisting of Rr Let the rth power supply unit U Tr That is, the rth power receiving unit U that constitutes the rth inductive power receiving panel Rr The rth inductive power supply unit U Tr The first power receiving unit U R1 and the opposing power supply unit U T1 , and a parallel transmission unit is configured, and the rth power supply unit U Tr and the opposite rth power receiving unit U Rr The parallel transmission unit is configured as shown in FIG. R1 ,U Rr are periodically distributed in the ceiling cavity of the passenger car body or on the roof of the car body, as in the parallel transmission systems according to the first to third embodiments.

[0178] When attention is paid to the circuit configuration shown in FIG. 11A, the first feeding coil L 1c1 and the first receiving coil L 2c1 There is a mutual inductance M 11-21 The first feeding coil L 1c1 and the second receiving coil L 2c2 There is a mutual inductance M 11-22 The first feeding coil L 1c1 and the second feed coil L 1c2 There is a mutual inductance M 11-12 Furthermore, there exists a second feeding coil L 1c2 and the first receiving coil L2c1 There is a mutual inductance M 12-21 The second feed coil L 1c2 and the second receiving coil L 2c2 There is a mutual inductance M 12-22 Furthermore, the first receiving coil L 2c1 and the second receiving coil L 2c2 There is a mutual inductance M 21-22 exists.

[0179] That is, the first power receiving unit U R1 and the opposing power supply unit U T1 In the parallel transmission unit configured as 1c1 , second feeding coil L 1c2 , first receiving coil L 2c1 and the second receiving coil L 2c2 Focusing on the four spiral coils, there are 4C2 = 6 mutual inductances between the four spiral coils. R1 and the opposing power supply unit U T1 In the parallel transmission unit configured as 1c1 , second feeding coil L 1c2 , the third feeding coil L 1c3 , first receiving coil L 2c1 , second receiving coil L 2c2 and the third receiving coil L 2c3 If there are 3 × 2 = 6 spiral coils, there are 6C2 = 15 mutual inductances between the six spiral coils. R1 and the opposing power supply unit U T1 In the parallel transmission unit configured as 1c1 , second feeding coil L 1c2 , the third feeding coil L 1c3 , the fourth feeding coil L 1c4 , first receiving coil L 2c1 , second receiving coil L 2c2 , the third receiving coil L 2c3 and the fourth receiving coil L 2c4If there are 4×2=8 spiral coils, there are 8C2=28 mutual inductances between the 8 spiral coils. Therefore, more generally, if ξ multiple coils are placed facing each other and ξ×2=2ξ spiral coils exist between the parallel transmission units, then 2ξ There are C2 mutual inductances.

[0180] The first power supply circuit, together with the second power supply circuit and the like arranged nearby, constitutes a first power supply unit U T1 The first power supply circuit includes a first power supply side capacitor C 11 , the first power supply capacitor C 11 The first power supply capacitor C 11 The electrostatic energy sent from the first power supply side capacitor C is stored as magnetic energy. 11 The first feeding coil L 1c1 The first feeding coil L 1c1 is the first power receiving unit U R1 The first feeding coil L 1c1 is the first power receiving unit U R1 The first receiving coil L included in 2c1 and magnetically couples the magnetic energy to the first power receiving unit U. R1 The first power supply circuit is connected to a DC power source 5 that is common to the other power supply units. The DC power source 5 and the first driving element Q form a series connection circuit. 11 The first power supply capacitor C 11 The first driving element Q is connected in parallel to the first driving element Q to form a π-type circuit in the first feeding circuit. 11 One terminal of the resistor 1 is connected to the high potential side terminal of the DC power supply 5 .

[0181] A DC power supply 5 common to the other power supply units supplies a constant DC voltage V1 to the first power supply circuit. 11 One terminal of the first driving element Q 11 The other terminal of the first feed coil L 1c1The first power supply capacitor C 11 The other terminal of the first power supply coil L is connected to the connection node of the low potential side terminal of the DC power supply 5. 1c1 The other terminal of the first power supply capacitor C 11 The DC power supply 5 is connected to the first power supply circuit via the first driving element Q. 11 When the first power supply capacitor C 11 DC voltage is supplied to the first driving element Q 11 is an on / off circuit element that limits the free damping oscillation of the first power supply circuit. By limiting the free damping oscillation, the first drive element Q 11 realizes a transient current-voltage change in the first power supply circuit. The DC power supply 5 may be a pseudo-constant voltage source, or may be a DC power supply with a simple structure that is simply rectified and contains a large ripple component, so that the control circuit and peripheral circuits are simple, durable, easy to design, and an inexpensive DC power supply 5 can be used.

[0182] First power receiving unit U R1 The first power receiving circuit, which is a part of the first power supply unit U T1 The first power supply unit U T1 The first receiving coil L receives magnetic energy without contact from the multiple power supply coils. 2c1 The first power receiving circuit further includes a first power receiving coil L 2c1 The first receiving coil L 2c1 The first receiving-side capacitor C stores the magnetic energy stored in the 21 As shown in FIG. 11A, the first power receiving circuit has a first load-side diode D 21 and the first load 61 are connected in series to the first power receiving side capacitor C 21 and the first receiving coil L 2c1 The first load 61 is connected in parallel to the storage battery C s1 is the first storage unit U C1 It forms part of the

[0183] The second power supply circuit, together with the first power supply circuit and the like arranged nearby, constitutes the first power supply unit U T1 The second power supply circuit is composed of a second power supply side capacitor C that stores electrostatic energy. 12 , second power supply side capacitor C 12 The second power supply capacitor C 12 The electrostatic energy sent from the second power supply side capacitor C is stored as magnetic energy. 12 The second feeding coil L 1c2 The second feeding coil L 1c2 is the first power receiving unit U T1 The first power receiving unit U is magnetically coupled to the power receiving multiple coils of the first power receiving unit U. T1 The second power supply circuit is connected to a DC power source 5 that is common to the first power supply circuit and the like. The DC power source 5 and the second driving element Q form a series-connected circuit. 12 The second power supply capacitor C 12 The second driving element Q is connected in parallel to the second driving element Q to form a π-type circuit in the second feeding circuit. 12 One terminal of the resistor 1 is connected to the high potential side terminal of the DC power supply 5 .

[0184] A DC power supply 5, which is common to the other power supply units, supplies a constant DC voltage V1 to the second power supply circuit. 12 One terminal of the second driving element Q 12 and the other terminal of the second feed coil L 1c2 The second power supply capacitor C 12 The other terminal of the second power supply coil L is connected to the connection node of the low potential side terminal of the DC power supply 5. 1c2 The other terminal of the second power supply capacitor C 12 The DC power supply 5 is connected to the second power supply circuit via the second driving element Q. 12 When the second power supply side capacitor C 12 The second driving element Q12 operates on / off as a circuit element that limits the free damping oscillation of the second feed circuit. By limiting the free damping oscillation, the second drive element Q 12 realizes a transient current-voltage change in the second power supply circuit.

[0185] The second power receiving circuit is located close to the first power receiving circuit and, together with the first power receiving circuit, forms a first power receiving unit U R1 The second power receiving circuit that constitutes the first power supply unit U T1 The first power supply unit U T1 The second receiving coil L receives magnetic energy in multiple channels without contact from the multiple power supply coils. 2c2 The second power receiving circuit further includes a second power receiving coil L 2c2 The second receiving coil L 2c2 The second receiving capacitor C stores the magnetic energy stored in the 22 As shown in FIG. 11A, the second power receiving circuit has a second load-side diode D 22 and the second load 62 are connected in series to form a second power receiving side capacitor C 22 and the second receiving coil L 2c2 The first load 61 is connected in parallel to the storage battery C s1 and a storage battery C as the second load 62 s2 is the first storage unit U C1 It forms part of the

[0186] 11A, the (n-1)th power supply circuit and the like, which are not shown, are connected to the rth power supply unit U Tr The nth power supply circuit is composed of the nth power supply side capacitor C 1n , the nth power supply capacitor C 1n The nth power supply capacitor C 1n The electrostatic energy sent from the 1n The current flows back to the nth feeding coil L 1cn The nth feeding coil L 1cnis the (n-1)th feeding coil L, which is not shown in FIG. 11A. 1c(n-1) Together with the nth feeding coil L 1cn The magnetic energy is transferred to the nth power supply capacitor C 1n At the same time, the magnetic energy is magnetically coupled to the multiple receiving coils that form part of the secondary side circuit network, and the magnetic energy is sent to the rth receiving unit U Rr The nth power supply coil L can transmit and receive power in parallel over multiple channels to the multiple receiving coils. 1cn The n-th power supply circuit is connected to a DC power supply 5 that is common to the other power supply units. The DC power supply 5 and the n-th driving element Q form a series connection circuit. 1n The nth power supply capacitor C 1n The nth driving element Q is connected in parallel to the nth power supply circuit. 1n One terminal of the resistor 1 is connected to the high potential side terminal of the DC power supply 5 .

[0187] The DC power supply 5, which is common to the other power supply units, supplies a constant DC voltage V1 to the nth power supply circuit. 1n One terminal of the nth driving element Q 1n The other terminal of the nth feeding coil L 1cn The n-th power supply capacitor C is connected to the connection node of one terminal of 1n The other terminal of the n-th feeding coil L is connected to the connection node of the low potential side terminal of the DC power supply 5. 1cn The other terminal of the nth power supply capacitor C 1n The DC power supply 5 is connected to the n-th driving element Q1, together with the other terminal of the n-th driving element Q2. 1n When the nth power supply capacitor C 1n DC voltage is supplied to the nth driving element Q 1n operates on / off as a circuit element that limits the free damping oscillation of the nth power supply circuit. By limiting the free damping oscillation, the nth drive element Q 1n realizes the transient current-voltage change in the nth feed circuit.

[0188] 11A, the (n-1)th power receiving circuit and the like, which are not shown, are connected to the rth power receiving unit U Rr The nth power receiving circuit that constitutes the rth power supply unit U Tr The rth power supply unit U Tr The nth receiving coil L receives magnetic energy through multiple channels without contact from the multiple power supply coils. 2cn Furthermore, the nth power receiving circuit has the nth power receiving coil L 2cn The nth receiving coil L is connected in parallel to 2cn The nth receiving capacitor C stores the magnetic energy stored in the 2n As shown in FIG. 11A, the nth power receiving circuit has an nth load-side diode D 2n and the nth load 6 n The series connection circuit with the nth receiving side capacitor C 2n and n receiving coil L 2cn The nth load 6 is connected in parallel in a ladder configuration. n Battery C as sn is the (n-1)th load 6 (not shown in FIG. 11A). n-1 Battery C as s(n-1) Together with the rth storage unit U Cr It is composed of:

[0189] Energy storage units U distributed throughout each railway vehicle C1 ,U C2 ,……,U Cr The storage battery C s1 ,C s2 ,……,C s(n-1) ,C sn The charging voltage V1 of each of the storage batteries C can be boosted to a desired high voltage level as shown in equation (3c) described in the first embodiment by the battery control circuit 41 shown in FIGS. 11A and 11B. s1 ,C s2 ,……,C s(n-1) ,C snBy integrating and adding the charging voltages V1 of the above, the voltage is boosted to the high voltage required for the variable voltage variable frequency inverter 43, and the driving voltage for the electric motor 44 is formed, which drives the electric motor 44 shown in FIG. 11B, thereby operating the electric train.

[0190] According to the parallel transmission system of the fourth embodiment, by selecting a drive period that allows both packet-like transient response vibrations to resonate in harmony with the natural vibrations, it is possible to improve the power transmission efficiency and transmit a large amount of energy in parallel in a short time. 1aj and receiving coil L 2aj Therefore, even when the distance between the railcar and the edge of a platform structure serving as a boarding / alighting area is 400 mm or more, efficient parallel power transmission is possible. Furthermore, according to the parallel transmission system of the fourth embodiment, by using a configuration in which multiple coils are arranged closely together to form a unit, it is possible to increase the power transmission frequency, theoretically pushing the limit power of power transmission to infinity, theoretically extending the limit distance of power transmission to infinity, and theoretically increasing the power transmission efficiency to a value close to 100%. In addition, according to the parallel transmission system of the fourth embodiment, for example, by arranging ζ = ξ × η power receiving coils closely together to form a power receiving unit, it is possible to reduce the parasitic resistance to 1 / ζ 2 This can significantly reduce the burden of cooling the power receiving coil on the railway vehicle side.

[0191] (Fifth embodiment) As shown in Fig. 12, the parallel transmission system according to the fifth embodiment of the present invention, like the parallel transmission system according to the fourth embodiment, has both a primary side circuit network and a secondary side circuit network configured with multiple coils. However, the power storage unit U C1 ,……,U Cr The configuration of the parallel transmission system according to the fifth embodiment is different from that of the parallel transmission system according to the fourth embodiment. TR1In the dashed square marked with "", the first feeding coil L is shown at the top, the second feeding coil L is shown at the top, and the third feeding coil L is shown at the top, which is the first feeding multiple coil obtained by multiplexing the ξ feeding coil L. TR1 The dashed-line square marked with "5" shows a second power feed multiple coil obtained by multiplexing the fourth power feed coil L from the top, the fifth power feed coil L from the top, ..., and the sixth ξ power feed coil L from the top. That is, a plurality of power feed multiple coils are arranged closely together to form a first power feed unit, as in the fourth embodiment. The first power feed unit then constitutes the first inductive power feed panel of the parallel transmission system according to the fifth embodiment.

[0192] And the upper U TR1 In the dashed square marked with ", the first power receiving multiple coil is shown, which corresponds to the first power feeding multiple coil, and is obtained by multiplexing the first power receiving coil L shown at the top, the second power receiving coil L shown at the top, ..., and the ξ power receiving coil L shown at the top, third from the top. TR1 In the dashed square marked with , a second power receiving multiple coil is shown in which the fourth power receiving coil L from the top, the fifth power receiving coil L from the top, ..., and the sixth power receiving coil L from the top are multiplexed in correspondence with the second power feeding multiple coil. That is, a plurality of power receiving multiple coils are arranged closely together to form a first power receiving unit that constitutes a first inductive power receiving panel, as in the fourth embodiment, and this first inductive power receiving panel is opposed to the first power feeding unit that serves as the first inductive power feeding panel.

[0193] Although not shown in FIG. 12, they are similarly opposed to each other. TRr The dashed square marked with " represents the sth power supply multiple coil, consisting of the (n-ξ+1)th power supply coil L, the (n-ξ+2)th power supply coil L, ..., the nth power supply coil L. In other words, a plurality of power supply multiple coils are arranged closely together to form the rth power supply unit. Furthermore, the (n-ξ+1)th power receiving coil L, the (n-ξ+2)th power receiving coil L, ..., the nth power receiving coil L 2cnIn other words, a plurality of power receiving multiple coils are arranged in close proximity to form the rth power receiving unit that constitutes the rth inductive power receiving panel, and this rth inductive power receiving panel is opposed to the rth power supply unit that serves as the rth inductive power supply panel. The power supply unit that faces the first power receiving unit is the first parallel transmission unit U TR1 The rth parallel transmission unit U TRr It is composed of:

[0194] U in the upper part of Figure 12 TR1 The first feed circuit connected to the first feed coil L shown at the top of the dashed square marked with "" constitutes the first feed multiple coil together with the second to ξ feed circuits etc. arranged in close proximity. TR1 Within the dashed square marked with "", a plurality of power feeding multiple coils are arranged in close proximity to form a first power feeding unit. The first power feeding circuit has a first power transmitting side capacitor C that stores electrostatic energy, and a first power feeding coil L that is connected in parallel to the first power transmitting side capacitor C, stores the electrostatic energy sent from the first power transmitting side capacitor C as magnetic energy, and returns this magnetic energy to the first power transmitting side capacitor C. The first power feeding coil L forms a first power feeding multiple coil that forms part of the first power feeding unit. The first power receiving coil L The first power receiving multiple coil including the first power receiving coil constitutes a first power receiving unit. The first power feeding coil L is magnetically coupled to the first power receiving multiple coil. Therefore, the first power feeding coil L can transmit and receive magnetic energy to and from the first power receiving multiple coil that constitutes the first power receiving unit.

[0195] As shown in the upper left of Fig. 12, a common DC power supply 5 is connected, and the DC power supply 5 supplies a constant DC voltage V1 to all power supply circuits of all power supply units. For the first power supply circuit, the DC power supply 5 and the first drive element, which form a series circuit with each other, are connected in parallel to the first power transmission side capacitor C to form a π-type circuit in the first power supply circuit. However, in Fig. 12, the first drive element is included in the block diagram of a collective equivalent circuit as a primary side switching element group 341b. One terminal of the first drive element is connected to the high-potential terminal of the DC power supply 5, but in Fig. 12, the DC power supply 5 is represented as a circuit that supplies power to the primary side switching element group 341b.

[0196] U in the upper part of Figure 12 TR1 A first power transmission-side capacitor C is connected in parallel to the first power supply coil L shown at the top of the dashed-line square. That is, one terminal of the first power transmission-side capacitor C is connected to the connection node between the other terminal of the first drive element and one terminal of the first power supply coil L, and the other terminal of the first power transmission-side capacitor C is connected to the connection node of the low-potential terminal of the DC power supply 5. However, in FIG. 12, it is depicted as being connected to the primary-side switching element group 341b. The first drive element included in the primary-side switching element group 341b performs on / off operation as a circuit element that limits free damping oscillation of the first power supply circuit, thereby limiting the free damping oscillation and realizing transient current-voltage changes in the first power supply circuit. In the example shown in FIG. 12, the primary-side switching element drive circuit 340b, the primary-side switching element group 341b, and the DC power supply 5 configure a coil current supply circuit network (340b, 341b, 5) of the parallel transmission system according to the fifth embodiment. The coil current supply network (340b, 341b, 5) is connected to a parallel transmission unit U, as described below. TR1 ,……,U TRr In other words, the coil current supply circuit network (340b, 341b, 5) constitutes a parallel circuit network of multiple coil current supply circuits that operate electrostatically independently of each other.

[0197] U in the upper part of Figure 12 TR1The first power receiving coil L is shown corresponding to the first power feeding coil L shown at the top of the dashed square marked with "." That is, the first power receiving circuit constituting a part of the first power receiving unit has the first power receiving coil L, which faces parallel to and spaced from the main surface of the first power feeding multiple coil constituting the first power feeding unit, and receives magnetic energy in multiple channels from the first power feeding multiple coil constituting a part of the first power feeding unit in a contactless manner. The first power receiving circuit further has a first power receiving-side capacitor C connected in parallel to the first power receiving coil L, which stores the magnetic energy accumulated in the first power receiving coil L as electrostatic energy. As shown in FIG. 12, the first power receiving circuit has a first load-side diode and a first management battery C. saa1 The series-connected circuit is connected in parallel to the first power receiving capacitor C and the first power receiving coil L in a ladder configuration. saa1 is the first storage unit U C1 It forms part of the

[0198] U in the upper part of Figure 12 TR1 The second power supply coil shown second from the top in the dashed-line square labeled " constitutes a second power supply circuit. That is, the second power supply circuit constitutes a first power supply unit together with the adjacent first power supply circuit, etc. The second power supply circuit is composed of a second power transmission-side capacitor C that stores electrostatic energy, a second power supply coil L that is connected in parallel to the second power transmission-side capacitor C, stores the electrostatic energy sent from the second power transmission-side capacitor C as magnetic energy, and returns this magnetic energy to the second power transmission-side capacitor C. The second power supply coil L is connected to the first power receiving unit U T1 and magnetically coupled to the first power receiving multiple coil included in the first power receiving unit U T1 The second drive element constituting the primary-side switching element group 341b is a circuit element that limits the free damping oscillation of the second power supply circuit, and performs on / off operation to limit the free damping oscillation and realize a transient current-voltage change in the second power supply circuit.

[0199] The other terminal of the second power supply coil L shown second from the top is connected to the other terminal of the second power transmission side capacitor C and the driving element Q of the primary side switching element group 341b. 12 The primary side switching element group 341b is connected to the second power supply circuit through the driving element Q 12 When conducting, it supplies DC voltage to the second transmitting side capacitor C, but the driving element Q 12 is turned on / off as a circuit element that limits the free damping oscillation of the second power supply circuit. By limiting the free damping oscillation, the driving element Q of the primary side switching element group 341b 12 realizes a transient current-voltage change in the second power supply circuit.

[0200] U in the upper part of Figure 12 TR1 The second power receiving coil L facing the second power feeding coil shown second from the top in the dashed square marked with " constitutes a second power receiving circuit. The second power receiving circuit is close to the first power receiving circuit and forms part of the first power receiving unit together with the first power receiving circuit, etc. The second power receiving circuit has a second power receiving coil L facing parallel to and spaced from the main surface of the first power feeding multiple coil that constitutes the first power feeding unit, and receiving magnetic energy in multiple channels without contact from the first power feeding multiple coil that constitutes part of the first power feeding unit. The second power receiving circuit further has a second power receiving side capacitor C connected in parallel to the second power receiving coil L and storing the magnetic energy accumulated in the second power receiving coil L as electrostatic energy. As shown in Fig. 12, the second power receiving circuit is composed of a first load side diode and a first management battery C. saa1 The series-connected circuit is connected in parallel to the second power receiving side capacitor C and the second power receiving coil L in a ladder configuration.

[0201] U in the upper part of Figure 12 TR1The third feeding coil shown third from the top in the dashed square labeled with " constitutes the ξ feeding circuit. That is, the ξ feeding circuit shown third from the top constitutes the first feeding unit together with the adjacent first and second feeding circuits. The ξ feeding circuit includes the ξ transmitting-side capacitor C that stores electrostatic energy, the ξ transmitting-side coil L that is connected in parallel to the ξ transmitting-side capacitor C and stores the electrostatic energy sent from the ξ transmitting-side capacitor C as magnetic energy and returns this magnetic energy to the ξ transmitting-side capacitor C. The ξ-th power supply coil L has a first power receiving unit U T1 and magnetically coupled to the first power receiving multiple coil included in the first power receiving unit U T1 Magnetic energy can be transmitted and received in parallel via multiple channels to the first power receiving multiple coils included in the primary side switching element group 341b. The ξ-th drive element constituting the primary side switching element group 341b is a circuit element that limits the free damping oscillation of the ξ-th power supply circuit, and performs on / off operation to limit the free damping oscillation and realize a transient current-voltage change in the ξ-th power supply circuit.

[0202] U in the upper part of Figure 12 TR1 The ξ receiving coil L facing the third power supply coil shown third from the top in the dashed square marked with " constitutes the ξ receiving circuit. The ξ receiving circuit is adjacent to the first and second power receiving circuits and constitutes the first power receiving multiple coil together with the first and second power receiving circuits. The ξ receiving circuit, which is part of the first power receiving unit, has the ξ receiving coil L facing parallel to and spaced from the main surface of the first power supply multiple coil that constitutes the first power supply unit, and receives magnetic energy in multiple channels from the first power supply multiple coil that constitutes part of the first power supply unit in a contactless manner. The ξ receiving circuit further has a ξ receiving-side capacitor C connected in parallel to the ξ receiving coil L and storing the magnetic energy accumulated in the ξ receiving coil L as electrostatic energy. As shown in Figure 12, the ξ receiving circuit is composed of a first load-side diode and a first management battery C. saa1 The series-connected circuit is connected in parallel to the ξ-th power receiving side capacitor C and the ξ-th power receiving coil L in a ladder configuration.

[0203] U in the upper part of Figure 12TR1 The fourth power supply circuit from the top, connected to the fourth power supply coil L from the top in the dashed square marked with "", constitutes a second power supply multiple coil together with the fourth to sixth power supply circuits and other components arranged nearby. TR1 Within the dashed square marked with U, multiple power supply coils are arranged close together to form the first power supply unit. TR1 The fourth power supply circuit shown in the dashed line from the top has the fourth power transmission side capacitor C from the top that stores electrostatic energy, and the fourth power supply coil L from the top that is connected in parallel to the fourth power transmission side capacitor C from the top, stores the electrostatic energy sent from the fourth power transmission side capacitor C from the top as magnetic energy, and returns this magnetic energy to the fourth power transmission side capacitor C from the top. The fourth power supply coil L from the top constitutes a second power supply multiple coil that is part of the first power supply unit. The fourth power supply coil L from the top is connected in parallel to the fourth power receiving coil L from the top. The power receiving unit is magnetically coupled to a second power receiving multiple coil that constitutes a first power receiving unit including the power receiving multiple coils, and is capable of transmitting and receiving magnetic energy in parallel through multiple channels to and from the second power receiving multiple coil that constitutes the first power receiving unit.

[0204] U TR1 In the fourth power supply circuit from the top, indicated by the dashed line in FIG. 12, the DC power supply 5 and the corresponding drive element, which form a series-connected circuit with each other, are connected in parallel to the fourth power transmission-side capacitor C from the top, forming a π-type circuit in the fourth power supply circuit from the top. However, in FIG. 12, the primary-side switching element group 341b is shown as a collective equivalent circuit block diagram, and the corresponding drive element is included.

[0205] U in the upper part of Figure 12 TR1The fourth power feeding coil L from the top in the dashed-line square marked with is connected in parallel to the fourth power feeding coil L. That is, one terminal of the fourth power feeding capacitor C is connected to the connection node between the other terminal of the corresponding drive element and one terminal of the fourth power feeding coil L, and the other terminal of the fourth power feeding capacitor C is connected to the connection node of the low-potential terminal of the DC power supply 5, but in FIG. 12 it is shown as being connected to the primary-side switching element group 341b. The corresponding drive element of the primary-side switching element group 341b performs on / off operation as a circuit element that limits free damping oscillation of the fourth power feeding circuit, thereby limiting the free damping oscillation and realizing transient current-voltage changes in the fourth power feeding circuit.

[0206] U in the upper part of Figure 12 TR1 A fourth power receiving coil L is shown corresponding to the fourth power feeding coil L in the dashed square marked with "." That is, the fourth power receiving circuit shown, which constitutes part of the first power receiving unit, has a fourth power receiving coil L that faces parallel to and spaced from the main surface of the second power feeding multiple coil that constitutes the first power feeding unit, and receives magnetic energy in multiple channels from the second power feeding multiple coil that constitutes part of the first power feeding unit in a contactless manner. The fourth power receiving circuit shown further has a fourth power receiving-side capacitor C shown, which is connected in parallel to the fourth power receiving coil L and stores the magnetic energy accumulated in the fourth power receiving coil L as electrostatic energy, as shown in FIG. 12. saa2 The series-connected circuit is connected in parallel to the fourth receiving capacitor C and the fourth receiving coil L in a ladder configuration. saa2 is the first storage unit U C1 It forms part of the

[0207] U in the upper part of Figure 12 TR1The fifth power supply coil from the top in the dashed-line square marked with " constitutes the fifth power supply circuit shown in the figure. That is, the fifth power supply circuit from the top, together with the fourth power supply circuit and other circuits arranged nearby, constitutes the first power supply unit. The fifth power supply circuit from the top includes the fifth power transmission side capacitor C that stores electrostatic energy, the fifth power supply coil L that is connected in parallel to the fifth power transmission side capacitor C and stores the electrostatic energy sent from the fifth power transmission side capacitor C as magnetic energy and returns this magnetic energy to the fifth power transmission side capacitor C. The fifth power supply coil L has a first power receiving unit U T1 and magnetically coupled to the second power receiving multiple coil included in the first power receiving unit U. T1 The corresponding driving elements constituting the primary-side switching element group 341b are turned on / off as circuit elements that limit the free damping oscillation of the power supply circuit shown in FIG. 5, thereby limiting the free damping oscillation and realizing a transient current-voltage change in the power supply circuit shown in FIG.

[0208] U TR1 The other terminal of the fifth power supply coil L indicated by the dashed line is connected to the other terminal of the fifth power transmission side capacitor C and to the corresponding drive element of the primary side switching element group 341b. The primary side switching element group 341b supplies a DC voltage to the fifth power transmission side capacitor C when the corresponding drive element is conductive for the fifth power supply circuit. The corresponding drive element performs on / off operation as a circuit element that limits the free damping oscillation of the fifth power supply circuit. By limiting the free damping oscillation, the corresponding drive element of the primary side switching element group 341b realizes a transient current-voltage change in the fifth power supply circuit.

[0209] U in the upper part of Figure 12 TR1The fifth receiving coil L facing the fifth power feeding coil in the dashed square marked with " constitutes a fifth receiving circuit. The fifth receiving circuit is adjacent to the fourth receiving circuit and forms part of the first power receiving unit together with the fourth receiving circuit, etc. The fifth receiving circuit has a fifth receiving coil L facing parallel to and spaced from the main surface of the second power feeding multiple coil constituting the first power feeding unit, and receives magnetic energy from the second power feeding multiple coil in a contactless manner via multiple channels. The fifth receiving circuit further has a fifth receiving-side capacitor C connected in parallel to the fifth receiving coil L and storing the magnetic energy accumulated in the fifth receiving coil L as electrostatic energy. As shown in Figure 12, the fifth receiving circuit is saa2 The series-connected circuit is connected in parallel to the fifth receiving-side capacitor C and the fifth receiving coil L in a ladder configuration.

[0210] U in the upper part of Figure 12 TR1 The sixth power feeding coil from the top, shown in the sixth dashed-line square, constitutes the sixth power feeding circuit. That is, the sixth power feeding circuit, together with the fourth and fifth power feeding circuits from the top, which are arranged close to each other, constitutes a first power feeding unit. The sixth power feeding circuit from the top includes the sixth power transmitting capacitor C, which stores electrostatic energy, and the sixth power feeding coil L, which is connected in parallel to the sixth power transmitting capacitor C and stores the electrostatic energy sent from the sixth power transmitting capacitor C as magnetic energy and returns this magnetic energy to the sixth power transmitting capacitor C. The sixth power supply coil L has a first power receiving unit U T1 The primary-side switching element group 341b is magnetically coupled to the second power receiving multiple coils included in the primary-side switching element group 341b, and is capable of transmitting and receiving magnetic energy in parallel over multiple channels to and from the second power receiving multiple coils. The corresponding driving elements constituting the primary-side switching element group 341b are turned on and off as circuit elements that limit the free damping oscillation of the power supply circuit shown in FIG. 6, thereby limiting the free damping oscillation and realizing a transient current-voltage change in the power supply circuit shown in FIG. 6.

[0211] U in the upper part of Figure 12TR1 The sixth receiving coil L facing the sixth power feeding coil in the dashed square marked with " constitutes the sixth receiving circuit. The sixth receiving circuit is adjacent to the fourth and fifth receiving circuits from the top, and constitutes the second power receiving multiple coil together with the fourth and fifth power receiving circuits. The sixth receiving circuit, which is part of the first power receiving unit, faces the main surface of the second power feeding multiple coil constituting the first power feeding unit in parallel with a space therebetween, and has a sixth receiving coil L that receives magnetic energy from the second power feeding multiple coil in a contactless manner via multiple channels. The sixth receiving circuit further has a sixth receiving-side capacitor C connected in parallel to the sixth receiving coil L and that stores the magnetic energy accumulated in the sixth receiving coil L as electrostatic energy. As shown in Figure 12, the sixth receiving circuit is composed of a second load-side diode and a second management battery C. saa2 The series-connected circuit is connected in parallel to the sixth receiving-side capacitor C and the sixth receiving coil L in a ladder configuration.

[0212] U in the lower part of Figure 12 TRr In the dashed-line square marked with "", three feeding coils L constituting the sth feeding multiple coil are shown on the left side, and three receiving coils L constituting the sth receiving multiple coil are shown on the right side. However, the three feeding coils L constituting the sth feeding multiple coil are shown for convenience of illustration, and three feeding coils L are shown as representatives, but in reality the multiple coil is composed of ξ feeding coils. Similarly, the three receiving coils L constituting the sth receiving multiple coil on the right side are shown for convenience of illustration, and in reality the multiple coil is composed of ξ feeding coils.

[0213] That is, the U in the lower part of Figure 12 TRrFor convenience, three receiving coils L out of the ξ are shown as representatives of the s-th power supply multiple coil in the dashed square marked with . Of the three receiving coils L, the bottom feeding coil L constitutes the bottom power supply circuit. The bottom feeding coil L returns magnetic energy to the bottom transmitting side capacitor C, and at the same time, is magnetically coupled to the s-th receiving multiple coil included in the secondary side circuit network, and transmits magnetic energy contactlessly to the s-th receiving multiple coil that constitutes the r-th receiving unit. The bottom power supply circuit is U TRr The dashed-line box marked with " constitutes the rth power supply unit together with the second and third power supply circuits from the bottom. That is, the bottom power supply circuit has the bottom power transmission capacitor C that stores electrostatic energy, and the bottom power supply coil L that is connected in parallel to the bottom power transmission capacitor C, stores the electrostatic energy sent from the bottom power transmission capacitor C as magnetic energy, and returns this magnetic energy to the bottom power transmission capacitor C.

[0214] U in the lower part of Figure 12 TRr The lowest power feeding coil L in the dashed-line square marked with circulates magnetic energy to the lowest power transmitting-side capacitor C and is magnetically coupled to the sth power receiving multiple coil included in the secondary-side circuit network, so that the lowest power feeding coil L can transmit and receive magnetic energy in parallel over multiple channels to the sth power receiving multiple coil that constitutes the rth power receiving unit. A primary-side switching element group 341b is connected to the lowest power feeding circuit. A corresponding drive element included in the primary-side switching element group 341b is actually connected in parallel to the lowest power transmitting-side capacitor C and forms part of the π-type circuit of the lowest power feeding circuit.

[0215] One terminal of the lowest power transmitting side capacitor C is connected to a connection node between a terminal of the primary side switching element group 341b and one terminal of the lowest power feeding coil L, and the other terminal of the lowest power transmitting side capacitor C is connected to the primary side switching element group 341b. The other terminal of the lowest power feeding coil L is connected to the primary side switching element group 341b together with the other terminal of the lowest power transmitting side capacitor C. The primary side switching element group 341b supplies a DC voltage to the lowest power transmitting side capacitor C for the lowest power feeding circuit when the corresponding drive element of the primary side switching element group 341b is conductive. The corresponding drive element performs on / off operation as a circuit element that limits the free damping oscillation of the lowest power feeding circuit. By limiting the free damping oscillation, the corresponding drive element realizes a transient current-voltage change in the lowest power feeding circuit.

[0216] U TRr The bottom power receiving circuit in the dashed square marked with " forms part of the rth power receiving unit together with the second and third power receiving circuits from the bottom in Fig. 12. The bottom power receiving circuit has a bottom power receiving coil L that faces parallel to and spaced apart from the main surface of the sth power feeding multiple coil that forms part of the rth power feeding unit, and receives magnetic energy in multiple channels from the sth power feeding multiple coil that forms part of the rth power feeding unit in a contactless manner. The bottom power receiving circuit further has a bottom power receiving-side capacitor C that is connected in parallel to the bottom power receiving coil L and stores the magnetic energy stored in the bottom power receiving coil L as electrostatic energy. As shown in Fig. 12, the bottom power receiving circuit is connected to the rth power storage unit U Cr The load side diode and the sth control battery C saas The series-connected circuit is connected in parallel in a ladder shape to the bottom receiving capacitor C and the bottom receiving coil L. saas is the U in the lower part of Figure 12. Cr The dashed square marked with "" contains the rth storage unit U together with other battery packs (not shown). Cr It is composed of:

[0217] U in the lower part of Figure 12 TRrOf the three receiving coils L shown as representatives in the dashed square marked with , the second-lowest feeding coil L constitutes the second-lowest feeding circuit. The second-lowest feeding coil L returns magnetic energy to the second-lowest transmitting capacitor C, and at the same time, is magnetically coupled to the sth receiving multiple coil included in the secondary circuit network, and transmits magnetic energy in parallel without contact to the sth receiving multiple coil that constitutes the rth receiving unit. The second-lowest feeding circuit is U TRr The dashed-line box marked with "" together with the bottom and third-from-the-bottom power supply circuits constitute the rth power supply unit. That is, the second-from-the-bottom power supply circuit has the second-from-the-bottom power supply capacitor C that stores electrostatic energy, and the second-from-the-bottom power supply coil L that is connected in parallel to the second-from-the-bottom power supply capacitor C, stores the electrostatic energy sent from the second-from-the-bottom power supply capacitor C as magnetic energy, and returns this magnetic energy to the second-from-the-bottom power supply capacitor C.

[0218] Dashed Square U TRr The second-lowest power feeding coil L returns magnetic energy to the second-lowest power transmitting-side capacitor C, and is magnetically coupled to the sth power receiving multiple coil included in the secondary-side circuit network, allowing magnetic energy to be transmitted to and received from the sth power receiving multiple coil in parallel over multiple channels. A primary-side switching element group 341b is connected to the second-lowest power feeding circuit. A corresponding drive element included in the primary-side switching element group 341b is actually connected in parallel to the second-lowest power transmitting-side capacitor C, and forms part of a π-type circuit of the second-lowest power feeding circuit.

[0219] The dashed square U in the lower row TRrOne terminal of the second-lowest power transmitting-side capacitor C in the primary-side switching element group 341b is connected to a connection node between a terminal of the primary-side switching element group 341b and one terminal of the second-lowest power feeding coil L. The other terminal of the second-lowest power transmitting-side capacitor C is connected to the primary-side switching element group 341b. The other terminal of the second-lowest power feeding coil L is connected to the primary-side switching element group 341b together with the other terminal of the second-lowest power transmitting-side capacitor C. The primary-side switching element group 341b supplies a DC voltage to the second-lowest power transmitting-side capacitor C for the second-lowest power feeding circuit when the corresponding drive element in the primary-side switching element group 341b is conductive. The corresponding drive element performs on / off operation as a circuit element that limits free damping oscillation of the second-lowest power feeding circuit. By limiting the free damping oscillation, the corresponding drive element realizes a transient current-voltage change in the second-lowest power feeding circuit.

[0220] The second-lowest power receiving circuit, together with the bottom and third-lowest power receiving circuits, etc. in Fig. 12, constitutes a part of the rth power receiving unit. The second-lowest power receiving circuit has a second-lowest power receiving coil L that faces parallel to and spaced apart from the main surface of the sth power feeding multiple coil that constitutes a part of the rth power feeding unit, and receives magnetic energy in multiple channels from the sth power feeding multiple coil that constitutes a part of the rth power feeding unit in a contactless manner. The second-lowest power receiving circuit further has a second-lowest power receiving-side capacitor C that is connected in parallel to the second-lowest power receiving coil L and stores the magnetic energy stored in the second-lowest power receiving coil L as electrostatic energy. As shown in Fig. 12, the second-lowest power receiving circuit is connected to the rth power storage unit U Cr The load side diode and the sth control battery C saas The series-connected circuit is connected in parallel in a ladder configuration to the second-lowest receiving capacitor C and the second-lowest receiving coil L.

[0221] Furthermore, as a representative example, U in the lower part of Figure 12 TRrOf the three receiving coils L shown in the dashed square marked with , the third feeding coil L from the bottom constitutes the third feeding circuit from the bottom. The third feeding coil L from the bottom returns magnetic energy to the third transmitting capacitor C from the bottom, and at the same time, is magnetically coupled to the sth receiving coil multiplex included in the secondary circuit network, and transmits magnetic energy in parallel without contact to the sth receiving coil multiplex that constitutes the rth receiving unit. The third feeding circuit from the bottom is U TRr The dashed-line box marked with " constitutes the rth power supply unit together with the second and third power supply circuits from the bottom. That is, the third power supply circuit from the bottom has the third power supply capacitor C from the bottom that stores electrostatic energy, and the third power supply coil L that is connected in parallel to the third power supply capacitor C from the bottom and stores the electrostatic energy sent from the third power supply capacitor C from the bottom as magnetic energy and returns this magnetic energy to the third power supply capacitor C from the bottom.

[0222] Dashed Square U TRr The third-from-the-bottom power feeding coil L in the secondary circuit network returns magnetic energy to the third-from-the-bottom power transmitting-side capacitor C, and is magnetically coupled to the sth power receiving multiple coil included in the secondary circuit network, allowing magnetic energy to be transmitted to and received from the sth power receiving multiple coil in parallel over multiple channels. A primary-side switching element group 341b is connected to the third-from-the-bottom power feeding circuit. A corresponding drive element included in the primary-side switching element group 341b is actually connected in parallel to the third-from-the-bottom power transmitting-side capacitor C, and forms part of a π-type circuit in the third-from-the-bottom power feeding circuit.

[0223] One terminal of the third-lowest power transmitting capacitor C is connected to a connection node between a terminal of the primary-side switching element group 341b and one terminal of the third-lowest power feeding coil L. The other terminal of the third-lowest power transmitting capacitor C is connected to the primary-side switching element group 341b. The other terminal of the third-lowest power feeding coil L, together with the other terminal of the third-lowest power transmitting capacitor C, is connected to the primary-side switching element group 341b. The primary-side switching element group 341b supplies a DC voltage to the third-lowest power transmitting capacitor C for the third-lowest power feeding circuit when the corresponding drive element in the primary-side switching element group 341b is conductive. The corresponding drive element performs on / off operation as a circuit element that limits free damping oscillation of the third-lowest power feeding circuit. By limiting the free damping oscillation, the corresponding drive element realizes a transient current-voltage change in the third-lowest power feeding circuit.

[0224] The dashed square U in the bottom row of Figure 12 TRr The third receiving circuit from the bottom is U TRr The third power receiving circuit from the bottom, together with the second and third power receiving circuits from the bottom in the dashed square marked with "", forms part of the rth power receiving unit. The third power receiving circuit from the bottom faces parallel to and spaced from the main surface of the sth power feeding multiple coil that forms part of the rth power feeding unit, and has a third power receiving coil L from the bottom that receives magnetic energy through multiple channels from the sth power feeding multiple coil in a contactless manner. Furthermore, the third power receiving circuit from the bottom is connected in parallel to the third power receiving coil L from the bottom, and has a third power receiving-side capacitor C from the bottom that stores the magnetic energy stored in the third power receiving coil L as electrostatic energy. As shown in Figure 12, the third power receiving circuit from the bottom is connected in parallel to the third power receiving coil L from the bottom, and has a third power receiving-side capacitor C from the bottom that stores the magnetic energy stored in the third power receiving coil L from the bottom as electrostatic energy. Cr The load side diode and the sth control battery C saas The series-connected circuit is connected in parallel in a ladder configuration to the third receiving capacitor C from the bottom and the third receiving coil L from the bottom.

[0225] The energy storage units U distributed across each railway vehicle C1 ,……,U Cr Battery C set tosaa1 ,……,C saas The charging voltage V1 of each of these can be boosted to a drive voltage of a desired high voltage level by the battery control circuit 41 shown in Fig. 12, as shown in equation (3c) described in the first embodiment. The battery control circuit 41 boosts the voltage to the high voltage required for the variable voltage variable frequency inverter, generates the drive voltage for the electric motor, and drives the electric motor to operate the electric train.

[0226] According to the parallel transmission system of the fifth embodiment, by selecting a drive period that allows both packet-like transient response vibrations to resonate in harmony with the natural vibrations, it is possible to improve the power transmission efficiency and transmit a large amount of energy in parallel in a short time. 1aj and receiving coil L 2aj This enables effective wireless parallel power transmission even when the distance between the railcar and the edge of the platform structure serving as the boarding / alighting area is 400 mm or more. Therefore, efficient parallel power transmission is possible even when the distance between the railcar and the edge of the platform structure serving as the boarding / alighting area varies depending on the state of passengers, etc. Furthermore, according to the parallel transmission system of the fifth embodiment, the system configuration can be simplified by using units configured with closely spaced multiple coils on both the power supply side and the power receiving side, and by simplifying the power storage unit. Furthermore, according to the parallel transmission system of the fifth embodiment, by increasing the power transmission frequency, it is possible to theoretically raise the limit power of power transmission to infinity, theoretically extend the limit distance of power transmission to infinity, and theoretically increase the power transmission efficiency to nearly 100%.

[0227] (Sixth embodiment) In the explanation of the primary-side switching element group 341b of the parallel transmission system according to the third embodiment shown in FIG. 10A, a group of driving elements Q 11 ,Q 12 ,Q 13 ,Q 14 ,…….Q 1(n-1) ,Q 1n The set is shown in block diagram. k When m=8 power supply units are arranged, the power supply capacity of one railway vehicle 31 is calculated from equation (63a). kTotal number per n rvm = 192, and from equation (63b), the total number of feeding coils n rvm = 256. If the train is 11 cars, the total number is n rvm = 192, the total number is 2112, rvm =256, the total becomes 2816. That is, in the parallel transmission systems according to the third to fifth embodiments, the primary side switching element group 341b requires a large number of driving elements, 2112 or 2816, and corresponding wiring.

[0228] The total number of power supply coils ζ constituting one power supply unit is given by Equation (62), so the total number of power supply coils in one railway vehicle 31 is k In the case of a q-car trainset equipped with m power supply units, a complex system configuration is required, requiring ζ×m×q wiring lines and corresponding drive elements. The larger the number of system components, the greater the probability of failure and the greater the maintenance burden. In contrast, the parallel transmission system of the sixth embodiment of the present invention is simplified to have only ζ drive elements in the primary-side switching element group 341c, thereby reducing the maintenance burden. This differs from the parallel transmission systems of the third to fifth embodiments. Therefore, the primary-side switching element drive circuit 340c is wired to the primary-side switching element group 341c using ζ signal lines, simplifying the wiring system. The primary-side switching element group 341c is equipped with a common DC power supply 5. In the example shown in FIG. 13, the primary-side switching element drive circuit 340c, the primary-side switching element group 341c, and the DC power supply 5 constitute the coil current supply circuit network (340c, 341c, 5) of the parallel transmission system of the sixth embodiment.

[0229] In FIG. 13, a plurality of power supply units U constituting a plurality of inductive power supply panels are T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U TrEach of the power supply units 341a and 341b has a power supply capacitor (not shown) connected to the other terminal of each of the switching elements arranged in the primary-side switching element group 341c. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The other terminal of the power supply side capacitor is connected to one terminal of the power supply coil of the power supply unit U. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The other terminal of the power supply side capacitor is connected to the other terminal of each of the power supply coils of the power supply unit U. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The other terminal of each of the power supply coils is connected to the low potential side terminal of the DC power supply 5 .

[0230] The coil current supply circuit network (340c, 341c, 5) in FIG. 13 includes a plurality of power supply units U that constitute an inductive power supply board. T1 ,U T2 ,U T3 ,U T4 ,……,U T(r-1) ,U Tr The primary-side switching element drive circuit 340c periodically switches between a series-parallel transient response state and a series transient response state to supply synchronized coil currents to each of the power supply units U. The coil current supply circuit networks (340c, 341c, 5) operate electrostatically independently of each other as a parallel circuit network made up of a set of multiple coil current supply circuits. That is, in FIG. 13, the primary-side switching element drive circuit 340c selects drive timings for stepwise input of DC supplied from the DC power supply 5 to the ζ drive elements, and T1 ,U T2 ,U T3 ,U T4 ,……,UT(r-1) ,U Tr The coil currents flowing through the ζ power supply coils assigned to each of the power supply units are operated in a separately excited manner. For example, Tj When the total number of spiral coils arranged inside the electric train is ζ, k For each ζ, multiple power cables are bundled and distributed to m power supply units U Tj The above-mentioned method may be introduced into each of the above.

[0231] The second train car is 312, the third train car is 313, ..., the kth train car is 31 k Although the illustration is omitted, FIG. 13 shows a train of q cars 311, 312, 313, ..., 31 k ,……,31 q In FIG. 13, m=4 multiple power cables are connected between the railway vehicle 311 and the railway vehicle 31 q Power supply unit U allocated to Tj The wiring topology shown in FIG. 11 is a wiring topology for supplying power to each of the m power supply units. Therefore, the output sides of the ζ drive elements constituting the primary-side switching element group 341c are common to all of the m power supply units allocated to the q railway cars. Therefore, the output sides of the ζ drive elements constituting the primary-side switching element group 341c are each connected in an m×q branch configuration.

[0232] Figure 13 shows the arrangement of m=4 power supply units U T1 ,U T2 ,U T3 ,U T4 The storage units U C1 ,U C2 ,U C3 ,U C4 Although not shown in FIG. 13, the power supply unit U T1 ,U T2 ,U T3 ,U T4Corresponding to the above, four power receiving units are periodically distributed on the ceiling cavity or roof of the railway car 311, and each power receiving unit is connected to each of the distributed power storage units U C1 ,U C2 ,U C3 ,U C4 The qth railway vehicle 31 also constitutes a part of the power receiving circuit network corresponding to the qth railway vehicle 31. q m=4 power supply units U T(r-3) ,U T(r-2) ,U T(r-1) ,U Tr The storage units U C(r-3) ,U C(r-2) ,U C(r-1) ,U Cr 13 is a schematic diagram showing a configuration in which a power receiving circuit network having a power supply unit U T(r-3) ,U T(r-2) and storage unit U C(r-3) ,U C(r-2) Furthermore, although not shown in FIG. 13, the power supply unit U T(r-3) ,U T(r-2) ,U T(r-1) ,U T Four power receiving units are installed in the railway vehicle 31 q are periodically distributed on the ceiling cavity or roof, and each power receiving unit is connected to each of the distributed power storage units U C(r-3) ,U C(r-2) ,U C(r-1) ,U Cr It forms part of the power receiving circuit network corresponding to

[0233] As shown in FIG. 13, the parallel transmission system according to the sixth embodiment is a system including railway cars 311, . . . , 31 q In addition, it is similar to the parallel transmission systems of the first to fifth embodiments in that it is a multi-channel contactless power transmission system that uses natural vibration harmonics to supply wavelet-shaped electromagnetic energy from a power supply device to power receiving devices in parallel without contact and with high efficiency, but the wiring topology is simplified, thereby reducing the burden of maintenance and management and improving reliability.

[0234] (Other embodiments) As described above, the present invention has been described with reference to the first to sixth embodiments. However, the descriptions and drawings constituting a part of this disclosure should not be construed as limiting the present invention. Various alternative embodiments, examples, and operational techniques will become apparent to those skilled in the art from this disclosure. For example, in the parallel transmission system according to the second embodiment, only the primary-side circuit network is configured as a multi-coil, as shown in FIGS. 7A and 7B, but conversely, only the secondary-side circuit network may be configured as a multi-coil, and the primary-side circuit network may be configured as a single-turn spiral coil. Furthermore, in the parallel transmission system according to the third embodiment, as shown in FIGS. 9A and 9B, an example is shown in which multiple power supply multi-coils are arranged adjacent to only the primary-side circuit network to form a power supply unit. However, conversely, only the secondary-side circuit network may be configured as a power receiving unit in which multiple coils are arranged adjacent to each other, and the primary-side circuit network may be configured as a single-turn spiral coil. Alternatively, only the secondary-side circuit network may be configured as a power receiving unit in which multiple coils are arranged adjacent to each other, and the primary-side circuit network may be configured as a single, isolated multi-coil.

[0235] Furthermore, part of the configuration of the parallel transmission system according to the first to fourth embodiments may be combined with part of the configuration of the parallel transmission system according to the sixth embodiment. As described above, the present invention includes various embodiments, modifications, operational techniques, etc. that are not described in this specification or drawings, and the technical scope of the present invention is defined only by the invention-specifying matters according to the claims that are appropriate from the above description. [Explanation of symbols]

[0236] 2a j …Primary side circuit, 2b j …Primary circuit network, 3a j ,3b j ...secondary side circuit, 4a...distributed energy storage boost system, 5...DC power supply, 61...first load, 62...second load, 6 j ,6 n …load, 11 j ...Inductive receiving board (electromagnetic induction receiving board), 12 j ...Inductive power supply board (electromagnetic inductive power supply board), 24 j …switching driver, 25 j ...Movable plate, 26a j…Blower, 27a, 27b j ...power receiving device, 29a...power supply device, 30a k …Ceiling cavity, 311, 312, 313, 31 k ,31 q ...Railway vehicles, 31a1, 31a k ,31a j ...body, 32 j ...gap control mechanism, 33...power supply side operation unit, 34a, 34b j ...Drive control circuit, 41...Battery control circuit, 43...Variable voltage variable frequency (VVVF) inverter, 44...Electric motor, 48...Electromagnetic shield layer, 49...Shield housing, 71 k …Central ceiling panel, 72 k …Side ceiling board, 73a k ,73b k ...supporting frame, 74i...hanging handle, 340a, 340b, 340c...primary side switching element drive circuit, 341b, 341c...primary side switching element group, 342a...transmission data storage device, 342b...program storage device

Claims

1. The car body and an electric motor that generates a propulsive force necessary for the vehicle to operate; a distributed energy storage boost system having a plurality of storage batteries distributed around the vehicle body so as to store electromagnetic energy at a predetermined charging voltage, and which performs integration and addition processing of the charging voltages to boost the charging voltages to a drive voltage required to drive the electric motor; a plurality of inductive power receiving panels that are disposed in a one-to-one relationship opposite the respective positions of a plurality of inductive power supply panels disposed outside the vehicle body at a distance from the vehicle body, and that are distributed on a ceiling cavity or roof of the vehicle body, and that receive the electromagnetic energy from the plurality of inductive power supply panels in a contactless manner and supply the received electromagnetic energy to the plurality of storage batteries; A railway vehicle comprising:

2. Each of the plurality of inductive receiving boards comprises: The power receiving coil includes a plurality of receiving coils having the same inductance, which are arranged in parallel on the same plane or on the same curved surface, 2. The railway vehicle according to claim 1, wherein each of the plurality of power receiving coils has the same coil width and coil thickness, and is adjacent to each other with a fixed gap therebetween.

3. 3. The railway vehicle according to claim 2, wherein each of the plurality of inductive receiving boards includes a unit configured by arranging a plurality of the multiple coils closely together on the same plane or the same curved surface.

4. 2. The railway vehicle according to claim 1, wherein each of the plurality of inductive power receiving panels includes a unit configured by arranging a plurality of power receiving coils closely together on the same plane or the same curved surface.

5. A station facility in which a railway vehicle has a distributed energy storage boost system in which a plurality of inductive power receiving panels are distributed in a ceiling cavity or on a roof, electromagnetic energy is supplied from the plurality of inductive power receiving panels to a plurality of storage batteries, and charging voltages of the plurality of distributed storage batteries are integrated and added together, and the electromagnetic energy is supplied in parallel via the plurality of inductive power receiving panels; a boarding and alighting area that assists passengers in moving to and from passenger compartments of the railway vehicle when the railway vehicle enters the line and stops; a plurality of inductive power supply panels that are distributed above the boarding and alighting area and that face the respective positions of the plurality of inductive power receiving panels in a one-to-one relationship when the train is stopped; a plurality of coil current supply circuits that periodically switch between two transient response states and supply synchronized coil currents to each of the power supply coils that make up the plurality of inductive power supply panels; A station facility characterized by having:

6. Each of the plurality of coil current supply circuits a DC power supply common to the plurality of coil current supply circuits; a switching element having one terminal connected to a high-potential terminal of the DC power supply and the other terminal connected to one terminal of the power supply coil; a primary side switching element drive circuit that drives the switching element; 6. The station facility according to claim 5, further comprising: a power supply coil having a second terminal connected to a low-potential terminal of the DC power supply.

7. Each of the plurality of inductive feeder boards includes: one terminal of which is connected to the other terminal of the switching element and one terminal of the power supply coil; a power supply side capacitor whose other terminal is connected to the low potential side terminal of the DC power supply together with the other terminal of the power supply coil; 7. The station facility according to claim 6, wherein:

8. Each of the plurality of inductive feed boards comprises: a multiple coil in which a plurality of feeding coils having the same inductance are arranged in parallel on the same plane or on the same curved surface; 6. The station facility according to claim 5, wherein each of the plurality of power supply coils has the same coil width and coil thickness, and is adjacent to each other with a fixed gap therebetween.

9. 9. The station facility according to claim 8, wherein each of the plurality of inductive power supply panels includes a unit configured by arranging a plurality of the multiple coils closely together on the same plane or the same curved surface.

10. 6. The station facility according to claim 5, wherein each of the plurality of inductive power supply panels includes a unit configured by arranging a plurality of power supply coils closely together on the same plane or the same curved surface.

11. a railway vehicle having a car body and an electric motor that generates a propulsive force necessary for the car body to operate; a distributed energy storage boost system having a plurality of storage batteries distributed around the vehicle body so as to store electromagnetic energy at a predetermined charging voltage, and which performs integration and addition processing of the charging voltages to boost the charging voltages to a drive voltage required to drive the electric motor; a plurality of inductive power receiving panels distributed on a ceiling cavity or roof of the vehicle body, the inductive power receiving panels supplying the electromagnetic energy to the plurality of storage batteries; a plurality of inductive power supply panels that are distributed above a platform that assists passengers in moving to and from passenger compartments of the railway vehicle when the railway vehicle enters the line and stops, and that face the respective positions of the plurality of inductive power receiving panels in a one-to-one relationship when the railway vehicle stops; a plurality of coil current supply circuits that periodically switch between two transient response states and supply synchronized coil currents to each of the power supply coils that make up the plurality of inductive power supply panels; A parallel transmission system comprising:

12. Each of the plurality of coil current supply circuits a DC power supply common to the plurality of coil current supply circuits; a switching element having one terminal connected to a high-potential terminal of the DC power supply and the other terminal connected to one terminal of the power supply coil; a primary side switching element drive circuit that drives the switching element; 12. The parallel transmission system according to claim 11, wherein the other terminal of the power supply coil is connected to a low-potential terminal of the DC power supply.

13. Each of the plurality of inductive feeder boards includes: one terminal of which is connected to the other terminal of the switching element and one terminal of the power supply coil; a power supply side capacitor whose other terminal is connected to the low potential side terminal of the DC power supply together with the other terminal of the power supply coil; 13. The parallel transmission system according to claim 12, wherein:

14. At least one of the plurality of inductive power supply boards or the plurality of inductive power receiving boards, The coil includes a plurality of spiral coils having the same inductance, which are arranged in parallel on the same plane or on the same curved surface, 12. The parallel transmission system according to claim 11, wherein each of the plurality of spiral coils has the same coil width and coil thickness, and is adjacent to each other with a fixed gap therebetween.

15. 15. The parallel transmission system according to claim 14, wherein at least one of the plurality of inductive power supply boards or the plurality of inductive power receiving boards includes a unit configured by arranging a plurality of the multiple coils closely together on the same plane or the same curved surface.

16. 12. The parallel transmission system according to claim 11, wherein at least one of the plurality of inductive power supply boards or the plurality of inductive power receiving boards includes a unit configured by arranging a plurality of spiral coils closely together on the same plane or the same curved surface.

Images