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四相开关磁阻电机的容错型功率变换器

Keywords: 容错,功率变换器,不对称半桥型结构,开路故障,开关磁阻电机

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Abstract:

在功率管发生开路故障时,为了使开关磁阻电机(switchedreluctancemotor,SRM)功率变换器的电机可继续保持正常功率,基于Maxwell+Simplorer环境,分析了功率变换器主要故障对电机性能的影响,并以不对称半桥型功率变换器为基础,针对功率开关管开路故障,提出了一种容错型功率变换器,即用不相邻正常相桥臂上的器件代替故障器件,有效地隔离了故障元件.结果表明:该功率变换器具有良好的容错性能,能够使电机在故障后继续正常运行.

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