Research on Single Power Switch Open Circuit Fault Diagnosis of Doubly Salient Eletromagnetic Motor Drive Circuit Based on the Back Electromotive Force Current
Xia Yiwen, Zhang Zhuoran, Zhang Jian, Chen Xu
Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics Nanjing 211106 China
Abstract：Fault diagnosis is the key technology of the control system of the double salient motor with high reliability. In this paper, the single power switch open circuit fault diagnosis technology of power converter is studied. The open circuit fault can be divided into the open circuit fault caused by the loss of drive signal and the open circuit fault caused by the power switch damage. The characteristics and damages of two fault types are described, and their effects on the back electromotive force current under different control modes are analyzed. The single power switch open circuit fault diagnosis method based on the back electromotive force current is proposed to diagnose two fault types, so that when the open circuit fault caused by the damage of the power switch occurs, the power switch of the same bridge arm of the fault switch cannot to be chopped, avoiding the extension of fault range. Finally, the effectiveness of the proposed method is verified by experiment results.
夏一文, 张卓然, 张健, 陈旭. 基于反电势电流的电励磁双凸极电机驱动电路单管开路故障诊断研究[J]. 电工技术学报, 2020, 35(23): 4888-4897.
Xia Yiwen, Zhang Zhuoran, Zhang Jian, Chen Xu. Research on Single Power Switch Open Circuit Fault Diagnosis of Doubly Salient Eletromagnetic Motor Drive Circuit Based on the Back Electromotive Force Current. Transactions of China Electrotechnical Society, 2020, 35(23): 4888-4897.
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2020, Vol. 35 
