无刷双馈电动机的控制方法研究

摘要

相比于传统有刷双馈电机,无刷双馈电机去除了电刷和滑环,从而增强了运行可靠性.本文以无刷双馈电动机的数学模型为基础,通过对其定子功率绕组和控制绕组电流矢量的分析以及转矩表达式的推导,提出了一种新型的控制策略,在保证转速动、静态稳定性的同时,实现了功率因数可调的目的.同时通过仿真和实验验证了该控制策略的有效性.%Brushless doubly-fed motor (BDFM) removes the electronic brush and the slip rings compared to the conventional induction machine,which enhances the reliability of the machine.Based on the mathematical model of BDFM,a new control method was proposed in this paper by analyzing the current space vector of the power windings and control windings in the stator and deducing the torque equation of BDFM.This method has good dynamics and static performance and can offer unity power factor.And it was tested by simulation and experiment.