44results about "Propulsion using dc motors" patented technology

The application discloses a traction transformer control cabinet and a rail train, and relates to the technical field of rail transit vehicles.The traction transformer control cabinet comprises a detachable shell and a control module arranged in the detachable shell; wherein the control module is used for determining the fan frequency of the fan in the cooling system of the traction transformer according to the first collection data sent by the whole vehicle controller of the rail train and the second collection data sent by the traction transformer, so as to utilize the fan frequency to perform frequency conversion control on the fan; the first collection signal comprises vehicle speed data, and the second collection signal comprises oil temperature data; through the arrangement of the traction transformer control cabinet, the control module in the traction transformer control cabinet performs frequency conversion control on the cooling fan according to the data such as the vehicle speed of the train and the oil temperature of the traction transformer, the low noise and the intelligentization of the traction transformer are realized, the noise of the rail train can be effectively reduced, and the passenger comfort is improved.

This overhead traveling vehicle system comprises: a track that is at least partially disposed in a grid pattern; a traveling unit that travels along the track; and an overhead traveling vehicle having a body unit that is disposed below the track and suspended from the traveling unit. The traveling unit includes a traveling wheel that rotates around a rotating shaft and rolls on the track; and a travel driving motor that drives the traveling wheel. The travel driving motor is installed on the rotating shaft of the traveling wheel.

The invention relates to an electrically driveable vehicle, in particular a rail vehicle (10), comprising an intermediate DC circuit (40), an in-vehicle, three-phase on-board electrical system (70) fed by the intermediate DC circuit (40), at least one drive motor fed via a converter (80), and at least one coolant pump (100) for pumping a coolant that cools the converter (80). According to the invention, in addition to the in-vehicle three-phase on-board electrical system (70), the vehicle also has a second on-board electrical system (110) and the at least one coolant pump (100) is connected to the second on-board electrical system (110).

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 power supply module (102) for supplying power to at least one mining or construction machine (112), the power supply module (102) comprising: a receiving unit (104) operative for receiving alternating current, AC, power from a power grid or an external power source (106); an alternating current to direct current, AC-DC, converting unit (108) operative for converting the AC power received by the receiving unit (104) to DC power, wherein the power supply module (102) is operative for feeding the DC power to the at least one mining or construction machine (112) via at least one DC transmission line (110), and the power supply module (102) is mobile.

Transport system with rail profile section wherein a mobile unit can be moved in the direction of the rail on the rail profile section, wherein at least one line carrying alternating current is attached to the rail profile section by means of is attached to a bracket the line extends parallel to the rail direction of the rail profile section, where an electronic unit is attached to the rail profile section by means of the bracket, wherein the electronic unit comprises an antenna winding and signal electronics electrically supplied by the antenna winding.

In a non-contact power supply system, each of a plurality of non-contact power supply devices includes a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and capacitors. The non-contact power supply system includes an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-contact power supply device. The electrostatic coupler includes two capacitors electrically connected in parallel, and a different-phase coil between the filter circuit of the one non-contact power supply device and the two capacitors. The different-phase coil includes an inductance component when a short-circuit or a ground fault occurs.

The present application relates to the technical field of sightseeing car traction system, and disclose a kind of traction system for straddle type monorail sightseeing car, including power supply brake detection module, path monitoring system, monorail overhead line and wireless communication module;The power supply brake detection module includes energy storage module and traction control module, the energy storage module is used to provide direct current, and the power energy is input to traction control module by DC / DC converter;The power supply brake detection module is used to change DC1500V into AC1500V;The power supply brake detection module includes direct current DC mode and alternating current AC mode;Power supply brake detection module includes ramp conversion module, ramp conversion module is used to track the slope on track in the process of running, path identification slope section, the path identification slope section is provided with climbing mode, flat slope mode and downhill deceleration mode.The present application has the advantages of automatic traction speed regulation and automatic conversion of switching direct current and alternating current.

In a non-contact power supply system 110, each of a plurality of non-contact power supply devices 1A, 1B, 1C, 1D, and 1E has a filter circuit 9 connected to an inverter 8 configured to convert power supplied from a power source 2 into AC power, the filter circuit 9 including a reactor and capacitors. The non-contact power supply system 110 includes an electrostatic coupling unit 112 configured to electrostatically couple one non-contact power supply device to another non-contact power supply device, the electrostatic coupling unit 112 having two capacitors C10 and C20 electrically connected in parallel; and a different-phase coil 114 that is provided between the filter circuit 9 of the one non-contact power supply device and the two capacitors C10 and C20, the different-phase coil 114 having an inductance component when a short-circuit or a ground fault occurs.

A power receiver (100) includes a power-receiver communication coil (170) and a power-receiver control unit (230) that controls energization of the power-receiver communication coil (170) for supply of a power supply request signal, requesting the power transmitter coil (22) to supply power, to the power-receiver communication coil (170). The power-receiver control unit (230) executes an abnormality determination process determining whether an abnormality related to wireless power transfer has occurred, and a prevention process preventing supply of the power supply request signal to the power-receiver communication coil (170) when the abnormality related to wireless power transfer is determined to have occurred.

The invention relates to an electrically operated civil engineering machine and to a method for electrically operating the civil engineering machine, having a mobile carrier device, at least one electrical consumption unit, at least one supply device by means of which electric current is supplied from an external energy source, which supplies electric current in alternating voltage with a first frequency and a first voltage value, the supply device having a first supply unit, which is arranged remote from the mobile carrier device and is connected to the external energy source, and having a second supply unit, which is arranged on the carrier device and is connected to the first supply unit via a connecting line for transmitting electric current. According to the invention, it is provided that the first supply unit has a frequency converter, which converts a frequency of the alternating voltage of the supplied current to a second frequency that is higher than the first frequency, and a first transformer, which increases the alternating voltage to a second voltage value, and that the electric current is transmitted from the first supply unit via the connecting line to the second supply unit on the carrier device with the second frequency and the second voltage.

The invention relates to a pantograph (2) for a road vehicle (1) for supplying traction energy from contact wires (5) of an overhead line system (3). It comprises an articulated support linkage (8) which can be rotatably supported on the road vehicle (1) via a base joint (15) and which carries two contact rockers (12, 13) rotatably mounted via rocker joints (22). Each of the contact rockers (12, 13) has two contact strips (14) which are resiliently supported on the respective rocker joint (22) by leaf springs (23). A lifting device (17) serves to raise the support rod (8) from a rest position in which the contact rockers (12, 13) are lowered close to the vehicle, into an operating position in which the contact rockers (12, 13) are raised to establish electrical contact between the slip rings (14) and the contact wires (5).The leaf springs (23) are electrically insulating to isolate the potential between the overhead line potential, on which the contact strips (14) are located when the contact wires (5) are electrically connected, and the vehicle potential, on which the support linkage (8) is located. According to the invention, a leaf spring (23) has a vibrating insulating body (32) with an elastically deformable body wall (33) which is upright on the leaf spring (23) and transverse to a longitudinal direction (L) of the leaf spring (23). The body wall (33) is coupled to the at least one leaf spring (23) via at least two fixing points (34) such that a spring movement (F) of the leaf spring (23) forces a flexural oscillation (S) of the body wall (33). This increases the availability of the pantograph (2) for supplying traction energy, even under winter road conditions.

The disclosure relates to an overhead line system for supplying electricity to the drive of one or more construction machines for piece good or bulk material transport, wherein the overhead line comprises at least one pair of lines which extend parallel along the route, carry current with opposing polarity and which can be electrically contacted by corresponding current collectors of the construction machines, characterized in that each line is provided at the end with at least one guide forming a feed channel for receiving the head of the current collector, the feed channel converging in the direction of the associated line.

Systems and methods for managing electrical power at a worksite (100) are described herein. A control system (112) determines available sources of electrical power at the worksite (100). The control system (112) establishes communications with one or more work machines (102) at the worksite (100) and commences monitor power usage of the one or more work machines (102). Upon receiving an indication that a work machine (102) requires power, the control system (112) determines the type of power to be used by the work machine (102). The types of power can include a grid power supply (124) and a portable power supply (132). If the portable power supply (132) is required, the control system (112) transmits an instruction to move the portable power supply (132) to the location where the electrical power is to be used. Further, the control system (112) can transmit a command to the work machine (102) to have the work machine (102) transfer excess electrical power stored in a battery (106) to a regenerative power storage using a regenerative capture system (144).

A drive system having a plurality of drive units that each have a converter and preferably one motor, wherein the drive system includes an energy supply system that supplies electric energy to the drive units, and a control system that includes a control computer and at least one control line, where the control system transmits control instructions to the drive units, and where the energy supply system and the drive units are releasably connected together via a first respective connection connector, preferably via a plug connection, and the control system and the drive units are releasably connected together via a second respective connection connector, preferably via a plug connection.

An overhead traveling vehicle system includes a track at least partially disposed in a grid pattern, and an overhead traveling vehicle including a traveling section configured to travel along the track, and a main body disposed below the track and suspended from the traveling section. The traveling section includes a traveling wheel configured to roll on the track about a rotation axis as a principal axis, and a traveling drive motor configured to drive the traveling wheel. The traveling drive motor is provided on the rotation axis of the traveling wheel.

The application discloses a drive system (1) having a plurality of drive units (2), wherein the drive units (2) each comprise a converter (3) and preferably a motor (4), an energy supply system (5) designed to supply electrical energy to the drive units (2), and a control system (6) comprising a control computer (8) and at least one control line (9), wherein the control system (8) is designed to transmit control commands to the drive units (2). The drive system (1) is characterized in that the energy supply system (5) and the drive units (2) are connected to one another in a detachable manner via first connectors, preferably via plug connections, and the control system (6) and the drive units (2) are connected to one another in a detachable manner via second connectors, preferably via plug connections.

The system includes a mains power supply (102) configured to supply power to at least one pulsed electrical load (114). The system also includes a propulsion converter (202) configured to drive a propulsion motor (204). The system further includes field-controlled induction electromachines (116, 224) coupled to at least one pulsed load. The field-controlled induction electromachines are configured to suppress one or more propulsion current harmonics generated by the propulsion converter and affecting at least one pulsed load.

An electrical substation that transforms AC voltage to DC voltage is configurable between a current-source mode for charging batteries of a stationary work machine and a voltage-source mode for powering motors of a moving work machine. The substation receives medium-voltage AC power from a grid and includes a pair of DC power converters each formed from three-phase transformers and a single stage of silicon-controlled rectifier units. Adjustable connectors enable combining the power converters in parallel or keeping them separate to operate in the current-source mode for charging the machine batteries with up to 4800ADC at 6 MW or for providing up to 1500VDC in powering voltage. The connectors further enable combining the power converters in series to operate in the voltage-source mode for powering the machine motors with up to 3000VDC at 6 MW. Sized to fit within a standard high-cube ISO shipping container with minimal components, the portable substation provides versatility with high power density and low cost per kilowatt.

An electrical substation (200) that transforms AC voltage to DC voltage is configurable between a current-source mode for charging batteries (154) of a stationary work machine (100) and a voltage-source mode for powering motors (150) of a moving work machine. The substation receives medium-voltage AC power from a grid and includes a pair of DC power converters each formed from three-phase transformers (304, 324) and a single stage of silicon-controlled rectifier units (308, 328). Adjustable connectors (S1-S9, 650, 652, 654, 656, 658, 660, 662) enable combining the power converters in parallel or keeping them separate to operate in the current-source mode for charging the machine batteries with up to 4800ADC at 6MW or for providing up to 1500VDC in powering voltage. The connectors further enable combining the power converters in series to operate in the voltage-source mode for powering the machine motors with up to 3000VDC at 6MW. Sized to fit within a standard high-cube ISO shipping container with minimal components, the portable substation (200) provides versatility with high power density and low cost per kilowatt.

Provided in the present disclosure are a regulating method and system adapted to a traction power supply grid. The regulating system is applied to a traction converter system of train. In regulating system, a grid voltage that the traction power grid currently presents is acquired in real time by a grid voltage monitoring module, whether there is high-frequency resonance phenomenon is determined based on the grid voltage that the traction power grid currently presents by a central control module. If there is currently a high-frequency resonance phenomenon, control signals are sent to individual rectifier modules and / or a drive control module to eliminate the high-frequency resonance phenomenon.

The invention relates to a drive system (1) comprising a plurality of drive units (2), each drive unit (2) comprising a converter (3) and preferably one motor (4); an energy supply system (5) which is designed to supply electric energy to the drive units (2); and a control system (6) which comprises a control computer (8) and at least one control line (9), wherein the control system (8) is designed to transmit control instructions to the drive units (2). The drive system (1) is characterized in that the energy supply system (5) and the drive units (2) are releasably connected together via a first respective connection connector, preferably via a plug connection, and the control system (6) and the drive units (2) are releasably connected together via a second respective connection connector, preferably via a plug connection.

System (100) for managing power suitable to feed an onboard traction system of a railway vehicle, comprising: - a DC traction bus (1) for transmitting DC power to a traction drive (200) of the railway vehicle; - a DC power generating system (2) providing DC power; - a first power collector (3) collecting AC power from an AC power feeding line (202), a power transformer (4) which receives AC power from the first power collector, an AC / DC conversion stage (5) connected to the power transformer and converting the collected AC power received via the power transformer into DC power; - a DC / DC conversion stage (10) connected to the traction bus. The DC / DC conversion stage is switchable between a first configuration where it is connected to and receives in input DC power, to be output to the traction bus, from the DC power generating system or from an offboard DC power feeding line, and a second configuration where it is connected to and receives in input DC power, to be output to the traction bus, from the AC / DC conversion stage.

An electrical power supply system for a tethered small unmanned aerial vehicle has a ground station (1) connected to a universal aerial power supply (13) by a tether (10). The universal aerial power supply is capable of installation into the battery dock of a conventional free flying small unmanned aerial vehicle to deliver power to the small unmanned aerial vehicle systems during flight. The universal aerial power supply is compatible with a range of different small unmanned aerial vehicles and a range of classes of small unmanned aerial vehicles.

The invention relates to a pantograph (2) for a road vehicle (1) for supplying traction energy from contact wires (5) of an overhead line system (3). It comprises an articulated support linkage (8) which can be rotatably supported on the road vehicle (1) via a base joint (15) and which carries two contact rockers (12, 13) rotatably mounted via rocker joints (22). Each of the contact rockers (12, 13) has two contact strips (14) which are resiliently supported on the respective rocker joint (22) by leaf springs (23). A lifting device (17) serves to raise the support rod (8) from a rest position in which the contact rockers (12, 13) are lowered close to the vehicle, into an operating position in which the contact rockers (12, 13) are raised to establish electrical contact between the slip rings (14) and the contact wires (5).The leaf springs (23) are electrically insulating to isolate the potential between the overhead line potential, on which the contact strips (14) are located when the contact wires (5) are electrically connected, and the vehicle potential, on which the support linkage (8) is located. According to the invention, a leaf spring (23) has a vibrating insulating body (32) with an elastically deformable body wall (33) which is upright on the leaf spring (23) and transverse to a longitudinal direction (L) of the leaf spring (23). The body wall (33) is coupled to the at least one leaf spring (23) via at least two fixing points (34) such that a spring movement (F) of the leaf spring (23) forces a flexural oscillation (S) of the body wall (33). This increases the availability of the pantograph (2) for supplying traction energy, even under winter road conditions.

The invention relates to a system (100) for energy storage in an electrically powered rail vehicle and a method for operating such a system (100) for energy storage, comprising a thermal storage device (10) configured for storing latent and / or sensible heat and a battery storage device (20) for storing electrical energy. The battery storage device (20) and the thermal storage device (10) are electrically coupled to an electrical supply (30). The thermal storage device (10) is thermally coupled, at least temporarily, to an interior space (40) of the rail vehicle, the battery storage device (20), and an environment (50) via a thermal interface (12). The heat stored in the thermal storage device (10) is stored, at least temporarily, at a temperature higher than a predetermined setpoint temperature of the interior space (40).

This application discloses a power supply system identification method applied to the mains voltage detection equipment of a multi-stream rail vehicle. The method includes: acquiring mains voltage signals at acquisition cycles; identifying the mains voltage mode (AC or DC) based on the instantaneous values ​​of the mains voltage signals from multiple acquisition cycles within a preset time period; if the mains voltage mode is DC, determining the current DC power supply system based on the instantaneous values ​​of the mains voltage signals within the preset time period; if the mains voltage mode is AC, determining the current AC power supply system based on the instantaneous values ​​and frequency of the mains voltage signals within the preset time period. This application identifies the power supply system using existing mains voltage detection equipment in multi-stream rail transit vehicles, eliminating the need for additional external equipment, reducing costs, and improving identification accuracy. This application also discloses a power supply system identification system, electronic equipment, a multi-stream rail vehicle, and a computer-readable storage medium, all possessing the aforementioned advantages.

To provide a railway vehicle equipped with a bulkhead member that encloses a gas conduit and airtightly separates it from the passenger compartment, and which can be easily welded to a floor plate having a gas conduit penetration hole formed near the side outer plate, and a method for manufacturing the railway vehicle. [Solution] The railway vehicle 10 is equipped with a gas conduit 4 disposed between a high-pressure gas container 1 mounted on a roof plate YK1 that constitutes a roof structure YK and a gas usage device 3 installed below a floor plate 2 that constitutes a frame DW. A through hole 21 is formed in the floor plate 2 near the side outer plate GK1 that constitutes a side structure GK, through which the gas conduit passes. Inside the vehicle body ST, a hollow bulkhead member 6 is provided, welded to the floor plate around the through hole, surrounding the gas conduit and airtightly separating it from the passenger compartment 5. The bulkhead member is equipped with a welding opening 611 in the hollow part 6T of the bulkhead member that opens towards the passenger compartment at a position close to the through hole, and a cover part 62 welded to the opening from the passenger compartment side.