174results about "Propulsion using dc motors" patented technology

A railroad vehicle (1500) for carrying freight is described. The railroad vehicle (1500) comprises power regeneration capability through a traction motor (1530) linked to a driving wheel (1520D), an electrical energy storage system (1550), a controller (1570) that may selectively operate the traction motor (1530) in a motoring mode, a coasting mode, or a dynamic braking mode. In the dynamic braking mode electrical energy from the traction motor (1530) is transmitted to the electrical energy storage system (1550). The controller (1570) is in communication with a communication link (1580) that receives control commands from an external control source (1595), and those control commands indicate the operating mode for a particular period of time.

A self-powered railroad system (1700), in one embodiment, comprises a locomotive (1710), a control source (1715), and a plurality of load units (1720A-K and 1730A-G), some of which are railroad vehicles (1720A-K) comprising the components of railroad vehicle (1500) that provide for selective operation in a motoring mode, a coasting mode, or a dynamic braking mode. The self-powered railroad system may also comprise a control source and at least one railroad vehicle controlled by the control source, such as for coupling, uncoupling, and moving to or from a loading dock.

A hybrid energy railway vehicle system having a traction motor with a dynamic braking mode of operation for dynamically braking the traction motor and for generating dynamic braking electrical energy and an electrical energy storage system that is in electrical communication with the traction motor and that stores dynamic braking electrical energy generated by the traction motor. The system also has a hybrid energy railway vehicle with a plurality of wheels wherein the traction motor has a motoring mode of operation for driving one of the wheels in response to electrical input energy. A converter selectively provides stored electrical energy from the energy storage system to the traction motor as electrical input energy for driving one or more of wheels. The hybrid energy railway vehicle is optionally equipped computer readable medium having computer executable instructions for controlling the operation of the hybrid energy railway vehicle and a processor configured to control the operation of the railway vehicle as a function of at least one of a plurality of operating modes.

An apparatus includes a robot arm, an electrical power cord, a motor-driven cable reel, an end effector, and at least one sensor. The robot arm has a proximal end and a distal end, and is configured to move in response to one or more electrical signals. The electrical power cord extends through the robot arm from the proximal end to the distal end and has an electrical plug at an end thereof. The motor-driven cable reel dispenses and retracts the electrical power cord so as to control a length thereof. The end effector is disposed at the distal end of the robot arm, and is configured to selectively grasp and release the electrical plug. The sensor is disposed at the distal end of the robot arm, and is configured to produce sensor data for controlling the robot arm to dock the electrical plug into an electrical receptacle.

A four wheel drive electric vehicle that runs on a road and on an electrified track comprising a motor, a battery pack, an accelerator, an alternator, an auxiliary generator capable, once the electric vehicle reaches approximately 20 m.p.h., of charging the battery when the battery pack is off or, when the battery pack is on, of transmitting electricity to the motor for extra power, an electrical system, a pair of motorized legs with balled feet, each of the motorized legs capable of being lowered so as to make contact with the electrified track that supplies electric power to drive the electric motor when the battery pack is off and a cooling system for cooling the motor including a cooling tank that contains oil that is circulated through oil piping. A separate portable charger for charging the batteries at home or when the vehicle is not in use is included.

A personal vehicle for transporting a user over a surface including an external combustion engine. The vehicle includes a generator for converting the mechanical energy produced by the external combustion engine to electrical energy and an energy storage device for storing power provided by the generator and for providing power to the external combustion engine and the assembly. The personal vehicle includes a controller for controlling a total power load placed on the external combustion engine providing short term regulation of external combustion engine parameters.

A power transport apparatus for transporting electric power to an electric vehicle on the road is provided. The apparatus includes a plurality of power supply units provided at a road in a longitudinal direction of the road, one or more of the power supply units simultaneously transporting the electric power to the electric vehicle; and a power line supplying the electric power to the respective power supply units.

The invention is a kind of generalized, integral and modular IGBT drawing converter model, which includes converting unit set in the drawer structure, a direct current supporting capacitance unit, gate driving circuit and control box, it has generalization, integration and modularity. The integration degree is high, the radiating mode is selectable, and the assembly and maintenance are convenient.

The invention relates to an arrangement for providing a vehicle, in particular a track bound vehicle, with electric energy, wherein the arrangement comprises a receiving device (200) adapted to receive an alternating electromagnetic field and to produce an alternating electric current by electromagnetic induction. The receiving device (200) comprises a plurality of windings and/or coils (9, 10, 11) of electrically conducting material, wherein each winding or coil (9, 10, 11) is adapted to produce a separate phase of the alternating electric current.

A vehicle charging system (1) includes: a connection cable (2) for supplying power from the external power source (12) such as a commercial power source; the drive battery (8); an auxiliary battery (9); and a drive battery charging device (3). The drive battery charging device (3) includes a power source circuit (7) connected to the external power source (12), the drive battery (8), and the auxiliary battery (9). Power from at least one of the external power source (12), the drive battery (8), and the auxiliary battery (9) is supplied to the control section (4). Operation of the control section (4) becomes possible with the supplied power. Accordingly, under control of the control section (4), a charge section (10) charges the drive battery (8) and the auxiliary battery (9) using power from the external power source (12).

A power storage control apparatus of one embodiment of the present invention includes a step-up/step-down chopper (31), a contactor (12) and a control unit (100). The control unit (100) is configured to control the contactor (12) so as to make the contactor supply the voltage from the overhead wire to the input portion of the VVVF inverter (15) of the main circuit in a normal running state and supply the voltage of the power storage device to the input portion of the VVVF inverter (15) in the second running state, and control the step-up/step-down chopper so as to make the step-up/step-down chopper perform a step-down operation to charge the power storage device (32) in the first running state and perform a step-up operation to discharge the power storage device (32) and supply the power to the CVCF inverter (21) in an emergency running state.

The invention discloses a pantograph-catenary detection method and system based on a train power supply system. The pantograph-catenary detection method and system based on the train power supply system includes that after a boosting transformer conducts boosting on alternating currents transmitted by the power grid, high-voltage electric energy is generated and enables the clearance between a catenary wire and a pantograph in a discharge loop to generate high voltage and large currents; and electric arcs generated from the clearance between the catenary wire and the pantograph under the condition of high voltage and large currents are collected. Therefore, the technical problem that large energy consumption is caused by the power supply through a high-voltage AC voltage source in order to generate high voltage and large currents from the pantograph-catenary clearance in a pantograph-catenary simulation test in the prior art is solved.

A method optimizes energy consumption in a railway system including a set of trains and a set of substations connected to a grid. The method optimizes control parameters controlling at least part of the energy consumption of the railway system to produce optimized control parameters minimizing a total power provided by the grid to satisfy a power demand of the railway system. The optimizing is subject to constraints on operations of the railway system, which include as complementarily constraint. Next, the method generates a command to control the energy consumption of the railway system based on the optimized control parameters.

The invention is a charging system for a kind of charging trackless trolley bus, which belongs to city public communication project field. The invention includes: public bus power transformation alternate current station, electric feeder, special trackless trolley bus contacting mesh for station charging, two-wire receiving bow, receiving switch, pulse high current quick-charging device which has power status monitor, the connection way is: the public bus power transformation commutation station outputs direct current power to each electric trolley station through aerial and underground electric wire, and which is leading out from the station to the station charging special trackless electric car contacting mesh, the dual-wire receiving bow set on the car proof rises at the station and contacts with the dual-wire of special contacting mesh, which is used as receiving device for charging trackless trolley, the cable of outputted negative and positive pole power is connected to the pulse high current quick-charging device of power status monitor. The invention is simple, the settings are reasonable.

Disclosed is a no-fire-return device (1) and method. The no-fire-return device is of an external power supply device comprising a first inverter (11), a second inverter (12), a control module (13), aDC/DC (direct current/direct current) transformer (14), a storage battery (15), a first switch (41) and a second switch (42); one end of the first inverter (11) is connected with contacts (51) betweena main traction converter (21) and a main traction motor (31) through the switch (41) while the other end is connected with a direct-current bus; the storage battery (15) is connected with on end ofthe DC/DC transformer (14) while the other end is connected with the direct-current bus; one end of the second inverter (12) is connected with the direct-current bus while the other end is connected with contacts (52) between on-board auxiliary equipment (32) and an on-board auxiliary inverter (22) through the second switch (42). The no-fire-return device (1) is arranged independent of the exterior of a locomotive, energy can be provided for auxiliary load of the locomotive in no-fire-return of the locomotive through pre-excitation, of the main traction motor (31), provided by the storage battery (15) and by converting mechanical energy to electricity by the main traction motor (31) in a brake mode namely a generator mode, use of energy of the on-board storage battery is not needed, a vehicle body does not need to be modified, and the device can be used upon connected.

The invention discloses a double-source electric locomotive converter. The double-source electric locomotive converter comprises a traction power supply module, a PWM rectifying module, an intermediate direct-current circuit module, an inversion module, a direct-current conversion module, an energy storage module and a transmission control module; a network side input port of the traction power supply module is connected with a power supply grid, and an output port of the traction power supply module is connected with an alternating-current side port of the PWM rectifying module; a direct-current side port of the PWM rectifying module is connected with a direct-current bus of the intermediate direct-current circuit module; an intermediate side port of the inversion module is connected with the direct-current bus of the intermediate direct-current circuit module; an output side port of the inversion module is connected with electric equipment; an intermediate side port of the direct-current conversion module is connected with the intermediate direct-current circuit module; the energy storage module is connected with an energy storage side port of the direct-current conversion module; the transmission control module is used for monitoring running states of all the other modules and providing control signals. The double-source electric locomotive converter has the advantages of being capable of providing lasting power for a locomotive, reducing the size and weight of a locomotive transformer, saving energy and the like.