无刷双馈感应电机统一矢量模型的研究

摘要

The torque equation and power equation of the unified vector model of brushless doubly-fed induction motor(BDFIM) are not conducive to the research on control strategies.Aiming at this problem,through the theoretical derivation of unified vector model,the motor torque and power equation are obtained,which are expressed by the controllable quantities,such as two stator windings current and flux vector,etc.To verify the accuracy of theoretical equations,the variable frequency speed regulating test platform is built for the model machine.The experimental results show that the torque and power equations derived can precisely predict the actual torque and power of the experimental prototype.%无刷双馈感应电机(BDFIM)统一矢量模型的转矩方程和功率方程不利于进行控制策略研究.针对这一问题,通过对统一矢量模型的理论推导,得出了由两定子绕组的电流和磁链矢量等可控量表示的电机转矩和功率方程.为验证理论方程的准确性,为样机搭建了变频调速试验平台.试验结果表明,所推导的转矩和功率方程可准确预测试验样机的实际转矩值和功率值.