矩阵式变换器-异步电机系统的故障保护及容错运行方式  

Fault Protection and Fault-Tolerant Operation Method for Matrix Converter-Induction Motor System

作　　者：王莉娜[1] 黄立培[2] 

机构地区：[1]北京航空航天大学自动化学院,北京100083 [2]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《电工技术学报》2006年第12期66-70,78,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50377014);中国博士后科学研究基金(t200404)资助项目。

摘　　要：矩阵式变换器(MC)没有自由续流回路,这使得其安全保护成为一个难点。本文提出了一种新的矩阵式变换器-异步电机系统(MCIMS)故障保护方式,当出现故障时,通过控制变换器开关或进行结构重组为电机提供一个可控的续流回路,使电机迅速释放储存能量安全停车或容错运行,并针对电机过载、电力开关断路和短路三种情况分析了所提出保护策略的可行性。仿真和实验结果验证了该方法的可行性和有效性。Matrix converter has no free-wheeling path, which makes its fault protection a difficult problem. This paper proposes a new fault protection method for matrix converter-induction motor system. The key of the proposed method is to provide a controlled path for the motor to release the stored energy in fault cases. The path is selected to brake the motor as soon as possible. Besides, by reconfiguring the converter-motor system, a fault-tolerant operation mode is deduced. The validity of the proposed method is analyzed under three conditions, namely motor overload, switch open-circuit and short-circuit faults. The validity and the efficiency are verified by the simulation and experiments.

关 键 词：矩阵式变换器 故障保护 容错运行 

分 类 号：TM343[电气工程—电机]