317results about "Rail devices" patented technology

A wireless power transfer system according to the present invention includes: a supply device having a primary coil installed on a road; a vehicle having a secondary coil that receives power transferred in a non-contact manner from the primary coil; and a server communicably connected to the supply device and the vehicle by wide-area wireless communication, in which the supply device transmits identification information of the supply device to the server before receiving a signal from the vehicle by narrow-area wireless communication, the server transmits a compatibility list including a combination of the compatible supply device and vehicle to the supply device on the basis of identification information of the supply device and information of the vehicle, and the supply device performs pairing with the vehicle on the basis of the compatibility list in a case of receiving the signal from the vehicle by the narrow-area wireless communication.

A thermosensitive wire includes a pair of conductive wires each covered with an insulator that softens at a preset temperature, and the pair of conductive wires are configured to come into contact with each other to be short-circuited in response to the insulator softening. A power supply system includes: a second power source configured to supply power to the pair of conductive wires; a short circuit detector configured to detect that the pair of conductive wires are short-circuited; a disconnection detector configured to detect that the pair of conductive wires are disconnected; and a controller configured to perform, for power supply to a power supply wire, abnormality control that differs between in the case where the short circuit detector detects that the pair of conductive wires are short-circuited and in the case where the disconnection detector detects that the pair of conductive wires are disconnected.

A three-rail power supply system includes a power supply having positive, negative, and neutral terminals, a rail system having a power supply end and a termination end, and an asymmetric resistor network. The rail system includes a positive rail, a negative rail, and a ground rail coupled to the positive terminal, the negative terminal, and the neutral terminal, respectively. The negative rail is disposed parallel to the positive rail. The ground rail is disposed in parallel to, and between, the positive rail and the negative rail, and is electrically grounded at a plurality of intervals between the power supply end and termination end. The asymmetric resistor network includes two pairs of resistors asymmetrically coupled to the rail system at the power supply end and termination end, and is configured to limit a fault current through a faulty connection in response the positive, negative, and / or ground rails experiencing the faulty connection.

A wireless power transfer system according to the present invention is a wireless power transfer system that performs wireless power transfer by magnetic coupling between a supply device on a ground side and a traveling vehicle, the wireless power transfer system including a control device that controls the wireless power transfer from a power transmission unit of the supply device to a power reception unit of the vehicle, in which the control device sets a time of alignment check to be longer than a time of pairing.

Dynamic energy transfer (DET) systems are costly and time-consuming to install. Accordingly, an installation system is disclosed that comprises stowage for rail segments and poles, two strategically positioned cranes, and / or strategically positioned platforms, to enable less expensive and faster installation of the various components of a DET system. Installation, utilizing the installation system, can significantly decrease the cost of installation, while increasing the rate of installation and maintaining safety.

A fleet and trolley system, a first method of charging a work machine, and a second method of charging a fleet of work machines are disclosed. The fleet and trolley system includes a trolley network, at least one zero-emission work machine, and a controller. The controller manages a scheduled usage of the trolley network, a power draw, and a distribution of the power draw by the work machine. The first method includes monitoring states of the work machine, scheduling a usage of the trolley network, and supplying electric power to the work machine. The second method includes monitoring states of a fleet, monitoring states of the trolley network, scheduling usages of the trolley network, and supplying electric power to one or more machines of the fleet. Advantageously, the disclosed system and methods may improve an efficiency, productivity, and longevity of a fleet of zero-emission work machines.

An electric rail infrastructure for a work machine is disclosed. The electric rail infrastructure comprises: a plurality of powered rails; a plurality of energy interfaces positioned throughout the plurality of powered rails; a power module connected to the plurality of energy interfaces for providing electrical power to the plurality of powered rails; a plurality of electric clamps positioned on each end of the powered rails, each electric clamp having at least one resistor.

A wireless power transfer device includes: a power transmitting resonant circuit including a power transmitting coil and a power transmitting capacitor; a switching circuit switching a state of the power transmitting resonant circuit between a resonant state and a non-resonant state; and a determination circuit determining whether a facing state in which the power transmitting coil faces the power receiving coil or a non-facing state in which the power transmitting coil does not face the power receiving coil is occurring. After determining that either one of the non-facing state and the facing state transitions to the other one, the switching circuit performs switching process to switch from either one of the non-resonant state and the resonant state to the other one within a voltage zero-crossing range including a voltage zero-crossing point and a current zero-crossing range including a current zero-crossing point of the power transmitting coil or power transmitting capacitor.

A modular structure supports elevated rail segments for delivering electrical power to a moving work machine, such as a hauler at a mining site. Opposite ends of a roadside barrier contain complementary tubular couplers arranged vertically. A lower end of a dielectric post positioned in one of the tubular couplers has opposing dielectric plates at an upper end. A top edge of each plate has a creepage concavity between a pair of rail recesses. Another dielectric post of similar configuration is positioned in the other of the tubular couplers. Holes within the couplers and the posts ensure alignment of respective rail recesses in which conductive rails are placed. Dielectric inserts frictionally lock the rails into the rail recesses.

The purpose of the present invention is to achieve both safety and efficiency at the time of restarting a power transmission process after a power failure by identifying a method for restarting a road-side power supply device after the power failure in the road-side power supply device. A non-contact power supply system while traveling, which supplies power in a non-contact manner from a road-side power supply device to a vehicle while traveling on which a vehicle-side power receiving device is mounted, is characterized in that the road-side power supply device is provided with: a first communication device capable of performing wide area wireless communication with the vehicle-side power receiving device; a second communication device capable of performing narrow-range wireless communication with the vehicle-side power receiving device; and an abnormality determination unit that determines an abnormality in the road-side power supply device, and performs a predetermined operation in the road-side power supply device when the abnormality determination unit determines that the abnormality has occurred.

A modular structure supports elevated rail segments for delivering electrical power to a moving work machine, such as a hauler at a mining site. Opposite ends of a roadside barrier contain complementary tubular couplers arranged vertically. A lower end of a dielectric post positioned in one of the tubular couplers has opposing dielectric plates at an upper end. A top edge of each plate has a creepage concavity between a pair of rail recesses. Another dielectric post of similar configuration is positioned in the other of the tubular couplers. Holes within the couplers and the posts ensure alignment of respective rail recesses in which conductive rails are placed. Dielectric inserts frictionally lock the rails into the rail recesses.

To provide a non-contact power transmission system capable of performing appropriate power transmission to mobiles during moving and stopping.SOLUTION: A non-contact power transmission system 1 comprises a power transmission unit 8, a power transmission power conversion unit 7, and a power transmission side control device 9. The power transmission unit 8 comprises a primary side coil for sending alternating-current power to be transmitted to a power reception device 4. The power transmission power conversion unit 7 comprises a plurality of transistors connected to the primary side coil. The power transmission power conversion unit 7 converts direct-current power supplied from a power supply unit 6 to alternating-current power. When a coupling coefficient is smaller than a predetermined value or a power transmission duration time is equal to or longer than a predetermined first time at the time of power transmission by the power transmission unit 8, the power transmission side control device 9 changes transmission power in decreasing tendency toward zero depending on a lapse of time until power transmission stop.SELECTED DRAWING: Figure 2

The application discloses a power rail and a control method thereof. The power rail comprises a track, the track has an interruption area at a position of a warehouse door, the track comprises two track sections located on two sides of the interruption area, and the track further comprises transition devices, the transition devices comprise two transition assemblies respectively arranged on the outer sides of the two track sections; the transition assembly comprises a transition rail and an expansion mechanism, the transition rail and the expansion mechanism can slide towards or away from the interruption area along a direction parallel to the track section, the transition rail is located between the track section and the expansion mechanism, and the expansion mechanism is used for driving the transition rail to move back and forth in a direction perpendicular to the track section, so that the two transition rails and the two track sections can be connected to form a continuous current collection surface. The power rail is provided with the transition devices, the sliding and expansion of the transition rails are controlled, the current collection surface of the power rail at the interruption area is a continuous surface, the current collection shoe can smoothly pass through, the pulling arc and noise between the shoe rails are effectively reduced, and train vibration can also be reduced.

To provide a contactless electric power transmission system capable of performing appropriate power transmission by independent communication control and power control on the power reception side.SOLUTION: A contactless electric power transmission system 1 comprises an electric power reception device 4 and a controller 17. The electric power reception device 4 receives electric power transmitted contactlessly between itself and an electric power transmission device 2. In a coupling section in which a degree of coupling between a primary side coil of the electric power transmission device 2 and a secondary side coil of the electric power reception device 4 is equal to or larger than a predetermined degree, the controller 17 sets communication sections in which the degree of coupling is relatively small and electric power transmission sections in which the degree of coupling is relatively large. When the secondary side coil exists in the first communication section of the coupling section, the controller 17 transmits information on electric power transmission in the electric power transmission section from the electric power reception device 4 to the electric power transmission device 2 by using communication between the electric power transmission device 2 and the electric power reception device 4.SELECTED DRAWING: Figure 1

This power supply device is provided with: a power supply line that is disposed along a movement path of a plurality of moving bodies and that supplies power to the plurality of moving bodies; a power supply device connected to the power supply line and supplying power to the power supply line; and a control system that controls the power supply device. A control system is provided with: a moving body number information acquisition unit that acquires moving body number information indicating the number of moving bodies in a power supply region, which is a region in which a power supply line is disposed in a movement path; and a control execution unit that executes supply power variable control for reducing power supplied from the power supply device to the power supply line in accordance with a decrease in the number of moving bodies in the power supply area on the basis of the number of moving bodies information. Power supplied from the power supply device to the power supply line is increased in response to an increase in the number of moving bodies in the power supply area.

The application discloses a fastener plate lower anti-stray current system, which realizes the increase of the creepage distance of the fastener system, the reduction of the surface contaminant accumulation and the prevention of the internal conductive path from being penetrated by dust, oil and water and other contaminants, thereby making the fastener system have good insulation performance during long-term use. In the application, a plate lower insulation plate with good insulation performance is arranged under the iron pad plate to realize the electrical isolation between the upper iron part of the fastener and the track bed, and the insulation coating with good insulation performance and elasticity is sprayed on the surface of the fastener to realize the filling and sealing of the gaps of the components on the upper part of the fastener, thereby preventing the decrease of the overall insulation performance of the fastener caused by long-term use. The scheme is basically consistent with the installation of the general fastener, does not increase additional processes, and will not be obviously affected by any subsequent rail adjustment, and is suitable for large-scale construction.

To make compatible safety and efficiency in restarting a power transmission process after power failure by making clear a restarting method of a road-side power supply apparatus after recovery from a disaster in a case where the disaster occurs.SOLUTION: A system for non-contact power supply during traveling supplies power in a non-contact manner from a power transmission device in a road-side power supply apparatus to a traveling vehicle on which a vehicle-side power reception apparatus is mounted. The road-side power supply apparatus comprises: a first communication unit capable of executing a wide-range radio communication with the vehicle-side power reception apparatus; a second communication unit capable of executing a narrow-range radio communication with the vehicle-side power reception apparatus; a power transmission control section which controls the power transmission device; and an abnormality determination section capable of determining occurrence of an abnormality. When a disaster is determined, the abnormality determination section turns on a disaster flag and notifies the power transmission control section of it. The power transmission control section stops a power supply operation by the transmission device in a case where it is determined that the disaster flag is turned on, and causes the road-side power supply apparatus to execute a predetermined operation in a case where it is determined that the disaster flag is turned off.SELECTED DRAWING: Figure 9

A coil device includes a main unit in which a coil that wirelessly transmits or receives electric power is accommodated in a main housing fixed to an installation target, and a sub-unit in which an electrical function unit that provides the main unit with an electrical function performed by at least one of an electric component and an electronic component is accommodated in a sub-housing detachably configured to be attached to the main housing. The main unit includes an accommodation portion that detachably accommodates the sub-unit.

To clarify how to resume a road-side power supply device after power outage of the road-side power supply device, and thereby achieve both safety and efficiency in resuming a power transfer process after the power outage.SOLUTION: A non-contact power supply system during traveling supplies power in a non-contact manner from an a road-side power supply device to a vehicle during traveling mounted with a vehicle-side power receiving device. The road-side power supply device includes: a first communication device that can perform wide-range wireless communication with the vehicle-side power receiving device; a second communication device that can perform short-range wireless communication with the vehicle-side power receiving device; and an abnormality determination unit that determines an abnormality of the road-side power supply device. When the abnormality determination unit has determined an occurrence of the abnormality, the road-side power supply device is caused to perform a predetermined operation.SELECTED DRAWING: Figure 9

In a wireless power transfer apparatus, a characteristic adjuster has a frequency characteristic that causes, in a power transfer mode from at least one power transmission unit to a power receiving apparatus, a resonant power transmission circuit to have a resonance frequency that substantially matches an operating frequency. The reactance of a power transmission coil has a reference value in the power transfer mode. The frequency characteristic of the characteristic adjuster causes, in a power non-transfer mode from the at least one power transmission unit to the power receiving apparatus, a reactance of a power transmission coil to become an adjusted value that is higher than the reference value.

A non-contact power supply device (10) is provided with a power transmission resonance circuit (42), a switching circuit (44), and a cell control unit (46) for controlling the switching circuit, and the cell control unit performs at least one of a first abnormality determination process and a second abnormality determination process. The first abnormality determination process determines whether or not the non-contact power supply device is abnormal using a first detection value detected by the detection unit in a non-resonant state, and the second abnormality determination process determines whether or not the non-contact power supply device is abnormal using a second detection value detected by the detection unit in a resonant state.

The power receiving electrode unit (300) is provided on the movable body (1002) and capacitively coupled with the power transmitting electrode unit (200). The power transmitting electrode unit (200) has a power transmitting electrode tooth portion (220) and a power transmitting electrode connection portion (230). The power receiving electrode unit (200) has a power receiving electrode tooth portion (220) and a power receiving electrode connection portion (230). The power transmitting electrode tooth portion (220) and the power receiving electrode connection portion (230) are connected to the power transmitting electrode tooth portion (230). The power transmitting electrode tooth portion (220) and the power receiving electrode tooth portion (320) face each other at a distance from each other, a first capacitance and a second capacitance are formed in the facing region of the power transmitting electrode tooth portion (220) and the power receiving electrode portion (320), a third capacitance and a fourth capacitance are formed in the facing region of the end of the power transmitting electrode tooth portion (220) and the power receiving electrode connecting portion (230) and a facing region of the end of the power receiving electrode tooth portion (320) and the power transmitting electrode connecting portion (230), and a dielectric is provided on the surfaces forming the first to fourth capacitances.

A control method and system includes determining a resonant frequency of a vehicle system operably coupled with an external power source providing voltage and current to the vehicle system. A first filter extracts a phase or frequency component from the voltage provided by the external power source to produce a stable voltage component. A second filter extracts a phase or frequency component from the current provided by the external power source to produce a stable current component. The stable voltage component is out of phase with the stable current component. A control input for a converter device of the vehicle system is determined based on the stable voltage component, the stable current component, and the resonant frequency. The stable voltage component, the stable current component, and the control input are communicated with the converter device to change the resonant frequency of the vehicle system.

A contactless power feeding facility includes a coupling unit electromagnetically coupling a target feeder line and an adjacent feeder line. A target power supply apparatus includes: a phase detector detecting the induced current phase which is the phase of an induced current flowing through the target feeder line by the electromagnetic induction via the coupling unit while an alternating current is supplied to the adjacent feeder line by an adjacent power supply apparatus; an alternating-current generator generating the alternating current to be supplied to the target feeder line; and a phase controller controlling the alternating-current generator such that the phase of the alternating current to be supplied to the target feeder approaches the induced current phase detected by the phase detector.

To perform an optimal power transmission control regardless of a combination of a power transmission device and a power reception device.SOLUTION: An in-vehicle device 10 comprises: a vehicle-side coil 11; a first power conversion circuit 13 that generates a supply power to be supplied to the vehicle-side coil 11 using a power of a secondary battery 17; and a vehicle-side control part 20 that is configured to be capable of acquiring a terminal voltage Vc of a capacitor 34 charged by the power received by a power supply device 30 and capable of controlling the first power conversion circuit 13, and is capable of executing a power supply control that controls the supply power via the first power conversion circuit 13 so that a terminal voltage Vc becomes a target voltage. The vehicle-side control unit 20 acquires characteristic information of a system for charging the capacitor 34 from the in-vehicle device 10 before executing the power supply control, and controls the supply power at the time of the power supply control based on the characteristic information.SELECTED DRAWING: Figure 3

To provide a control device capable of promptly detecting a disruption in wide-area wireless communication.SOLUTION: The control device includes a processor that is configured to set a shorter disruption determination time for determining that wide-area wireless communication is disrupted when the distance between a vehicle and a supply facility is determined to be less than a threshold value on the basis of the location information of the vehicle than when the distance between the vehicle and the supply facility is greater than the threshold value in a wireless power transmission system for non-contact transmission of electrical power from the supply facility to the travelling vehicle using narrow and wide-area wireless communications.SELECTED DRAWING: Figure 9

To provide a wireless power supply system 1 which satisfactorily supplies AC power output from an AC power supply 4 to an electric load 50 when a movable body 3 moves.SOLUTION: The wireless power feeding system 1 includes the matching circuit 30 disposed between the coupler 60 and the electric load 50, and the matching circuit 40 disposed between the AC power supply 4 and the coupler 60. The matching circuit 30 has an impedance that cancels the reactance Xl in the impedance Zl. The matching circuit 40 operates such that the impedance Zin on the matching circuit 40 side with respect to the AC power supply 4 is proportional to the resistance value R of the electric load 50. By changing the value of the current flowing from the AC power supply 4 to the electric load 50 in accordance with the change in the resistance value R, the power output from the AC power supply 4 is supplied to the electric load 50.SELECTED DRAWING: Figure 1

To provide a control device for power supply during traveling, which can appropriately cope with a case where a living object or a metal foreign object is detected.SOLUTION: A control device for power supply during traveling includes a processor, and when a living object or a metal foreign object is detected around a primary coil of a power transmitting device that transmits power to a power receiving device provided in a vehicle during traveling, the processor deletes identification information on the primary coil registered in an identification information list of the primary coil, and when the living object or the metal foreign object is not detected, the processor performs compatibility check and service authentication between the power receiving device and the power transmitting device in the vehicle.SELECTED DRAWING: Figure 9

To bury, near a road surface of a travel route, a power supply device supplying power in a non-contact manner to a power receiving device provided in a movable body moving on the travel route, while ensuring long-term commonality.SOLUTION: A burying structure for a power supply device buries, in a travel route, a power supply device supplying power in a non-contact manner to a power receiving device provided in a movable body moving on the travel route. The power supply device has a protective case that stores a resonance capacitor connected in series to a power supply coil, and the protective case is formed to have a length in a transverse direction of the travel route shorter than a coil case that stores the power supply coil, the protective case being buried in the travel route.SELECTED DRAWING: Figure 1

The present invention relates to an inductive charging device (1) for an inductive vehicle charging system for charging batteries of battery electric vehicles, in particular a stationary and / or inductive inductive charging device. The inductive charging device (1) comprises at least one coil (2) for generating an alternating electromagnetic field, which extends in a plane extending perpendicular to a height direction (H) of the inductive charging device (1) and is formed with an electrical conductor path configured as strands (3). The inductive charging device (1) further comprises a coil support structure (4) made of plastic in which the strands (3) are at least partially embedded and for positioning the strands (3). The inductive charging device (1) further comprises a support structure (5) having a plurality of support elements (6) each extending along the height direction (H), which are spaced apart from one another in a longitudinal direction (L) perpendicular to the height direction (H) and which is supported in the height direction by the coil support structure (4). The inductive charging device (1) further comprises at least two, preferably a plurality of, magnetic field conductive core plates (7) made of soft magnetic material arranged at a distance from each other and extending along a longitudinal direction (L), wherein each core plate (7) is supported on at least one support element (6).