直流电动机等效电容特性分析

Analysis of the equivalent capacitive property about dcmotor

从直流电动机空载启动电流按指数衰减的变化规律 ,联想到电容器的充电电流也按指数规律衰减的特点 ,提出了直流电动机是否也具有“电容特性”的研究课题 .本文运用数学推导的方法进行了全面分析研究 ,从理论上得出了直流电动机也具有“电容特性”的结论 .并阐述了直流电动机具有“电容特性”的物理意义 .

By comparing the starting current of DC motor at no load with the charging current of a capacitor, we can find out the same speciali ty that both the current attenuates by the index law. Thus we developed the ques tion whether DC motor has equivalent “capacitive property ”? In this paper, w e have obtained a conclusion with mathematical analytical method that DC moto r possesses “capacitive property”, and have expounded its physical meaning. As for the theoretical meaning and the practical value of this question, shoul d be further studied.