[关键词]
[摘要]
研究一种双定子磁悬浮开关磁阻电机。该电机采用内-外双定子结构,内定子和外定子上分别设置悬浮力绕组和转矩绕组。在结合拓扑结构说明其运行原理的基础上,针对该电机同时存在转矩脉动和悬浮力脉动过大的问题,提出了直接转矩(DT)与直接悬浮力控制(DSFC)策略。比较了传统方波控制策略与所提控制策略下系统的转矩脉动、悬浮力脉动以及转子径向位移波动。仿真结果表明:DT/DSFC不仅能提高系统动态响应速度,而且有效抑制了转矩和悬浮力脉动,削弱了转子径向抖振,验证了所提控制策略的有效性与优越性。
[Key word]
[Abstract]
A doublestator bearingless switched reluctance motor was studied. An innerouter double stator structure were adopted for the motor. The suspension force winding and the torque winding were separately arranged on the inner stator and the outer stator. Based on the description of the operating principle of the topology, the direct torque and direct suspension force control (DT/DSFC) strategy was proposed for the problem that the motor had both torque ripple and suspension force pulsation. The torque ripple, suspension force pulsation and rotor radial displacement fluctuation of the system under the traditional square wave control strategy and the proposed control strategy were compared. The test results showed that DT/DSFC could not only improve the dynamic response speed of the system, but also effectively suppress the torque and suspension force pulsation, and weaken the rotor radial buffeting, verifying the effectiveness and superiority of the proposed control strategy.
[中图分类号]
TM 352
[基金项目]
国家自然科学基金项目(51707082,51877101);江苏省自然科学基金项目(BK20170546);中国博士后科学基金项目(2017M620192)