摘要
本文推导出直流电动机起动过程的等效电路。根据等效电路推导出起动过程输入能量和能量损耗的计算公式。应用这些公式计算出斩波控制和电阻控制两种控制方式的起动和调速时的损耗、输入能量和效率。
With the equivalent circuit established, equations arc obatined for calculation of the input energy and its loss during the process of starting of DC motors. Calculations are done for chopper-controlled motors and for resistor-controlled motors, and comparison is made to show that the former are power saving
关键词
斩波
控制
电机车
节能
直流
D.C.electric locomotives
D.C.electric machines
equivalent circuits
chopper speed control
efficency
calculation
