无轴承交流电机的原理和发展

无轴承交流电机作为一种集驱动与自悬浮功能于一体的新型磁悬浮电机，具有传统磁轴承电机无磨损、无润滑、无粉尘等特点，在交流电机领域已经成为一个研究热点，在对无轴承交流电机的基本原理进行一般性分析的基础上。对无轴承交流电机的基本理论，径向力方程以及控制系统方程做了较为细致的论述，最后对无轴承交流电机的研究现状进行了分析和总结，并提出了有待进一步研究的问题。

The bearingless induction motor,which integrates induction motor and magnetic bearing,has the function of rotation and self-levitation., have the advantages of no abrasion,no lubrication and no particle generation caused by bearings, it are getting a lot of attentions in the field of AC motor drives at present.On the basis of the general analysis of the cardinal principle of AC bearingless motor, the fundamental theory ,the radial force functions and the control system are explained in more detail. At last, the research status of AC bearingless motor is summarized, and proposed to be further studied.