基于双PWM整流器绕线异步电机串级调速控制

摘要

绕线异步电动机因采用传统串级调速控制,受调速范围、功率因数、谐波污染等问题影响,其推广应用受到限制.故提出采用双PWM整流器的双馈串级调速控制方案.给出了整流器的控制策略以提高调速系统的可控性和控制精度.仿真和模拟实验验证了所提方案和控制策略的有效性.%Application of the traditional Seherbius variable-speed control of winding induction asynchronous motor is re-stricted by its speed-range, power factor and harmonic pollution, etc..The scheme of doubly fed Scherbius system with dou-ble PWM rectifier is proposed, and the control strategies of the supply-side PWM and the rotor-connected converter are given respectively.All conclusions are supported by simulation and practical experiments.