Device for realizing non-fire return of train by adopting bidirectional charger and control method of device

Abstract

The invention discloses a device for realizing non-fire return of a train by adopting a bidirectional charger and a control method of device. The device comprises an input conversion unit, an intermediate direct current unit, a traction inverter unit, an auxiliary inverter unit, a bidirectional charger, a motor and a power storage device, wherein the input conversion unit is used for supplying power for the traction inverter unit and the auxiliary inverter unit; the intermediate direct current unit is used for storage and release of electric energy of a circuit; the traction inverter unit is used for supplying power for the auxiliary inverter unit; the auxiliary inverter unit is used for assisting a load for supplying power, supplying power for the bidirectional charger at the same time and providing excitation for the motor; the bidirectional charger is used for supplying power for the power storage device and providing input energy for the auxiliary inverter unit; the motor is used for assisting a load for supplying energy; and the power storage device is used for receiving the charging of the bidirectional charger and storing energy when the train runs normally or after a non-fire return intermediate voltage is established, wherein the in non-fire return establishment process, the output direct current voltage passes through the bidirectional charger to be inversely converted into an alternating current voltage to release energy. According to the device, non-fire return is realized based on the bidirectional charger, and additional equipment is not added.

Description

technical field [0001] The invention relates to the technical field of power locomotives, in particular to a device and a control method for realizing train return without fire by using a bidirectional charger. Background technique [0002] When the train fails to take power from the grid due to a pantograph failure, or the controller fails to perform normal traction operation, it can be sent back to the destination by other vehicles for towing and rescue. During the loopback process, if the rescued train can realize the self-power supply without fire loopback and maintain the normal operation of the rescued train’s auxiliary loads (air conditioning, lighting, ventilation devices, etc.) when the rescue train does not provide power, it will be able to maximize Maintain a comfortable environment for rescued train passengers and relieve the work pressure of crew members and drivers. [0003] In the prior art, a non-fire return unit for realizing non-fire return is generally pr...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, a fire-free return unit for realizing fire-free return is generally installed separately on the train, and such a design substantially increases additional equipment on the train

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