Diesel multiple unit, electricity supply system of diesel multiple unit and traction control method of diesel multiple unit

Abstract

The invention discloses an electricity supply system of a diesel multiple unit. The electricity supply system comprises a diesel power pack, a traction inverter connected with a tractor motor and an auxiliary inverter connected with loads of the whole diesel multiple unit and further comprises a DC chopper and a super-capacitor which are connected with each other; the high-voltage side of the DC chopper is connected with the diesel power pack, and the low-voltage side of the DC chopper is connected with the super-capacitor; and the super-capacitor is connected with the traction inverter and the loads of the whole diesel multiple unit. By applying the electricity supply system provided by the invention, intermediate voltage control is simplified, and the stability and the control simplicity of the system are improved; and the super-capacitor can provide large power in a short time for starting and accelerating of a train in the traction process, thus, the train can adopt the small diesel power pack, the size and the weight of the diesel power pack are decreased, and installing of the diesel power pack is facilitated. Train braking recovered energy can be recycled, and accordingly the energy saving and emission reduction effect can be achieved. Meanwhile, the invention discloses the diesel multiple unit comprising the electricity supply system and a traction control method of the diesel multiple unit.

Description

technical field [0001] The present invention relates to the technical field of EMUs, and more specifically, relates to a power supply system for a DMU, ​​and also relates to a DMU including the above-mentioned power supply system and a traction control method for a DMU. Background technique [0002] EMUs are the main force of railway passenger transportation. The current main EMUs can be roughly divided into two categories: one is electric EMUs; the other is internal combustion EMUs. The train power supply main circuit is the source of train power. [0003] The main circuit of the internal combustion electric train unit is generally composed of the following parts: internal combustion power pack, main inverter, auxiliary inverter. In the main circuit structure of traditional internal combustion EMUs, there are battery hybrid structures and internal combustion electric hybrid structures. The main idea is to incorporate batteries or traction networks into the traditional str...

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Problems solved by technology

[0006] In view of this, the first object of the present invention is to provide a power supply system for a diesel train set. The structural design of the power supply system for a diesel train set can effectively solve the problem of the large power, large volume and weight of the diesel power pack in the powe

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