双凸极电机主功率变换器故障在线诊断  

Study of On-Line Fault Diagnosis of Main Power Converter for Doubly Salient Motor

作　　者：尹航[1] 周波[1] 魏佳丹[1] 

机构地区：[1]南京航空航天大学航空电源航空科技重点实验室,南京210016

出　　处：《电工技术学报》2008年第10期88-94,99,共8页Transactions of China Electrotechnical Society

基　　金：国家重点基础研究发展计划(973项目)(2007CB210302);航空支撑科技基金(H0324-032);江苏省高技术(BG2004009)资助项目。

摘　　要：主功率变换器是电机系统中最薄弱、故障率最高的环节。故障后电机运行在非平衡状态,降低了系统可靠性,而且可能导致电机以及整个系统损坏。因此对主功率变换器进行在线故障检测和诊断是提高整个系统可靠性的关键。本文通过对基于全桥变换器的电励磁双凸极电机主功率电路功率管故障的研究,在不影响电机控制方式的情况下,改变三相电流传感器位置,同时结合功率管驱动信号和二极管续流信号,实现在线故障诊断。最后通过模拟故障状态,验证了该方法的正确性、快速性和实用性。The drive system will work in nonequilibrium condition after faults of converter which is the weakest link of the system. The motor works under fault will cause serious problems and it would reduce the reliability of the system. Fault detection and diagnosis is the key to improve the system reliability. So this paper pays more attention to realize the fault detection of the full-bridge converter for doubly salient motor by the method of position change of three-phase current sensors. The combination of the drive signal and the reflow current is used for the fault diagnosis on line. The validity and practicability of the method is verified by experiments of fault states simulation.

关 键 词：双凸极电机 全桥变换器 故障检测 诊断 

分 类 号：TM352[电气工程—电机]