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  

Research on Single Power Switch Open Circuit Fault Diagnosis of Doubly Salient Eletromagnetic Motor Drive Circuit Based on the Back Electromotive Force Current

作　　者：夏一文 张卓然[1] 张健[1] 陈旭[1] Xia Yiwen;Zhang Zhuoran;Zhang Jian;Chen Xu(Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China)

机构地区：[1]多电飞机电气系统工信部重点实验室(南京航空航天大学),南京211106

出　　处：《电工技术学报》2020年第23期4888-4897,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金面上项目资助(51977108)。

摘　　要：故障诊断是高可靠性电励磁双凸极电机驱动控制系统的关键技术。该文对双凸极电机驱动控制系统功率变换器单管开路故障诊断技术进行研究。功率管开路故障按形成原因可分为驱动信号丢失引起的开路故障与功率管损坏引起的开路故障。文中对两种故障类型的特点与危害进行了阐述,并分析其对不同控制方式下反电势电流的影响。提出基于反电势电流的功率变换器单管开路故障诊断方法,实现对两种故障类型的诊断,并及时对控制策略进行调整:在功率管损坏引起的开路故障发生时,不能对故障管同桥臂的功率管进行斩波以避免故障升级。最后通过实验验证了所提方法的有效性。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.

关 键 词：反电势电流 开路 故障诊断 电励磁双凸极电机 

分 类 号：TM352[电气工程—电机]