... drive motor commutator；驱动电机整流子[集电环] drive motor current；驱动电机电流 drive motor cutoff switch；驱动电机切断开关 ...
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驱动电机电流
Drive motor current
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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