Fault Tolerant Power Converter for Four-phase Switched Reluctance Motor
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摘要: 在功率管发生开路故障时, 为了使开关磁阻电机 (switched reluctance motor, 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.Abstract: To make the power converter of switched reluctance motor (SRM) continue to maintain the normal power when the open-circuit failure occurs, the effects of main faults of the power converter on motor's performances were analyzed in the environment of Maxwell + Simplorer and a fault tolerant power converter based on asymmetric half-bridge power converter was presented, which can make the device with non-adjacent normal phase bridge instead of faulty devices and effectively isolate the faulty devices.Resultsshow that the power converter has good fault-tolerant performance and can enable the motor to operate normally after failure.
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