The principle of main parameter of the with the change of source frequency were given on the base of analyzing the equivalent circuit of induction motor.
在感应电动机等效电路的基础上，分析了当电源频率发生改变时，等值电路中主要参数的变化规律。
In this paper GTR Base-drive circuits on PWM variable frequency and variable speed systems for induction motor drive are studied.
本文介绍了为异步电动机PW M变频调速系统而研制的GTR基极驱动电路。
This machine consists of base, frequency control brake motor spindle shaft, pivoted link and barrel, etc.
该机由机座、变频制动电机主轴、回转连杆及筒体等部分组成。
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