高速列车异步牵引电机直接磁场定向控制研究

Direct Field Oriented Control of Asynchronous Traction Motor of High Speed Train

对高速列车异步牵引电机的直接磁场定向控制技术进行研究。针对某型动车牵引电机,对电压型、电流型以及混合闭环磁链观测器的工作特性进行频率响应函数分析对比,并且仿真实现了基于混合型磁链观测器的牵引电机直接磁场定向控制。结果表明,电机参数偏差影响观测器对转子磁链的观测效果,混合型的闭环磁链观测器具有较强的参数鲁棒性,适合应用于直接磁场定向控制系统中。

In this paper,research on direct field oriented control technology of asynchronous traction motor of high-speed train is presented.For a certain type of EMU traction motor,the work characteristics of voltage,current and hybrid closed-loop flux estimator are analyzed and compared by frequency response function,the Simulation of direct field oriented control based on hybrid flux estimator of the traction motor is carried out.The results show that the deviation of motor parameters affect the estimator,and the proposed hybrid closed-loop flux estimator has strong robustness to motor parameters,suitable for direct field oriented control system.