Research on Ground Current of High-Power Series Chopper Circuit

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Li, Peifei^1 ; Zhang, Lei^1 ; Ouyang, Bin^1 ; Zhai, Xiaofei^1

Naval University of Engineering, Wuhan, China^1

关键词: Ground currents;    High power;    Off state;    Switching modes;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/3/032105/pdf
DOI  :  10.1088/1755-1315/252/3/032105

来源: IOP

【 摘 要 】

The ground current equivalent circuit of the series chopper circuit is proposed. The ground current of the following two switching modes is analysed: The IGBT of the upper chopper circuit is turned on when the IGBT of the lower chopper circuit is in the off state; The IGBT of the upper chopper circuit is turned off when the IGBT of the lower chopper circuit is in the off state. The ground current paths of the two switching modes are analyzed, and the mechanism of ground current crosstalk between the upper and lower chopper circuits in the series chopper circuit is obtained. The analysis is verified by simulation and experimentation.