分析了开关磁阻四端口机电换能器的磁路结构，得出了内外电机避免磁耦合的原则。
The magnetic circuit structure of switch reluctance based FPEMEC was put into analysis too, and the principle of avoid inner and outer magnetic coupling was obtained.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
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