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|1. (WO2018040368) DIESEL MULTIPLE UNIT, POWER SUPPLY SYSTEM THEREOF, AND TRACTION CONTROL METHOD THEREFOR|
|Applicants:||CRRC ZHUZHOU LOCOMOTIVE CO., LTD
|Title:||DIESEL MULTIPLE UNIT, POWER SUPPLY SYSTEM THEREOF, AND TRACTION CONTROL METHOD THEREFOR|
A power supply system of a diesel multiple unit, comprising a diesel power pack, and a traction inverter and an auxiliary inverter connected to the diesel power pack. The traction inverter is connected to a traction motor; the auxiliary inverter is connected to a unit load; a supercapacitor connected in parallel with the diesel power pack by means of a direct-current chopper is further comprised; the direct-current chopper and the diesel power pack are both connected with the traction inverter and the auxiliary inverter by means of an intermediate direct-current link of the traction inverter. By applying the power supply system, intermediate voltage control is simplified, and system stability and control simplicity are enhanced. During traction, high power can be supplied by the supercapacitor in a short time, so that a train is started to accelerate, and therefore, a small diesel power pack can be selected, thereby reducing the size and weight of the diesel power pack and making it easy to mount. Energy regenerated in train braking is recycled, so that the effects of energy conservation and emission reduction are achieved. Additionally, further disclosed are a diesel multiple unit comprising the power supply system and a traction control method for the diesel multiple unit.