【摘要】 通过在直流电源与不对称半桥式开关磁阻电机功率电路间插入一种准谐振直流环节,给每个相开关并联电容,构成新型开关磁阻电机软开关功率变换器主电路.该电路控制简单且能够实现变换器中全部功率器件的软开关操作.在介绍变换器主电路拓扑及特点基础上,深入分析了其软开关原理,并通过仿真实验验证了该电路方案的可行性及原理分析的正确性.更多还原

【Abstract】 A brand-new soft-switching converter for SRM was proposed,which was made up of a kind of quasi resonant DC link circuit(QRDCL) and the classic asymmetry bridge SRM converter modified by adding a shunt-wound capacitance per phase switch device.All power switch devices of the proposed converter were able to operate in soft-switching mode.Based on introducing the structure and characteristics of the converter circuit,the soft-switching operating principle of the circuit was analyzed.Simulation experiment results show that circuit scheme is feasible and principe analysis is correct.更多还原