Zhuzhou Crrc Times Electric Co., Ltd

Crrc Zhuzhou Institute Co., Ltd.

Liangjie Liu

Bin Liu

Xiong Liu

Jing Shang

Kean Liu

Hao Li

Wenqing Mei

Shaolong Xu

Wei Guo

Minggao Zeng

Yuecheng Xie

Zechun Dou

Yu Qi

Chao Du

Qiao He

Bingzhang Li

Leilei Ding

Gengliang He

Qingliang Zhao

Weiwei Gan

Fang Yuan

Lifen Yang

Jinwei Mo

Xuebiao Peng

Chaoyong Lin

Zhenjun Lin

Haifeng Ye

Wenliang Li

Shanjun Qi

Zhonghong Yao

Hongji Peng

Donghai Zou

Xin Xue

Hao Huang

Gang Fu

Zhibing Zhang

Dangbing Zou

Yongjiang Liu

There is provided an electric traction system, comprising: a step-down transformer comprising a primary winding for operatively coupling to an AC power supply and a secondary winding which is inductively coupled to the primary winding; a traction converter module comprising a first input terminal and a second input terminal which are operatively coupled to the secondary winding, and a plurality of AC-to-AC power converters, each of which comprises first and second input nodes, configured to receive AC power and output nodes configured to supply AC power, wherein the first and second input nodes, of the plurality of AC-to-AC power converters are electrically connected in series between the first input terminal and the second input terminal; and at least one electric motor configured to be driven by the traction converter module.

Electric traction system

Provided are a method and system for controlling a voltage. The method includes: acquiring a current output voltage of an inverter; calculating a current voltage error of the current output voltage relative to a given output voltage; inputting the current voltage error into a fuzzy controller to determine a target output voltage of the inverter; determining an amplitude adjustment command based on a difference between an amplitude of the target output voltage and an amplitude of the current output voltage; determining a phase adjustment command based on a difference between a phase of the target output voltage and a phase of the current output voltage; and adjusting an amplitude and a phase of an output voltage of the inverter according to the amplitude adjustment command and the phase adjustment command respectively, to maintain the output voltage of the inverter within a preset range.

Voltage control method and system

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Hunan, China

Liangjie Liu