磁通切换双定子电机定位力矩抑制方法研究  

Study of Cogging Torque Suppressing for Double Stator FSPM Motor

作　　者：龚剑峰[1] 全力[1] 朱孝勇[1] 宗在云 

机构地区：[1]江苏大学,镇江212013

出　　处：《微特电机》2016年第1期17-21,共5页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(51377073);教育部博士点基金项目(20113227110002);江苏省高校优势学科建设工程资助项目

摘　　要：磁通切换永磁(FSPM)电机具有功率密度高、输出转矩大、反电动势正弦等优点,与传统永磁体位于转子的永磁同步电机、无刷直流电机相比,FSPM电机存在较大的转矩脉动,这也一定程度上限制了该类电机在诸如高精度运动控制、伺服系统等领域的应用和推广。针对磁通切换双定子电机,提出了一种"内、外电机错位设计与控制"的方法,并进行理论分析和实验验证。在电机本体设计上,采用磁路并联式同心圆结构,同时将内、外定子之间错开一个角度;控制时,通过控制内、外定子电流相位,以达到明显抑制定位力矩的目的。仿真分析和实验研究均表明,该方法能使电机在保持高转矩密度的同时,能有效降低了该类电机的总转矩脉动,为该类双凸极类双定子电机的转矩脉动的抑制,提供了一种行之有效的方法。The flux-switching permanent magnet （FSPM） motor has the advantages of high power density, large output torque and essentially sinusoidal back-EMF. However, compared with the traditional permanent magnet synchronous motor and brushless DC motor which permanent magnet in the rotor, FSPM motor torque ripple is relatively large, as a result, it limits the application and popularization of this kind of motor in some fields such as high precision motion control, servo system etc. In this paper, a new method the ＂inside and outside the motor displacement design and control＂ was proposed for magnetic flux switching double stator motor, and the theoretical analysis and experimental verification were carried on. In the design of the motor, the magnetic circuit parallel and concentric circles structure were adopted, and at the same time, the internal and external stator were staggered an angle. Through the control of inner, outer stator current phase, the purpose of suppress the cogging torque can be achieved. Both the simulation analysis and experimental research show that, the proposed method can make the motor to maintain high torque density and effectively reduce the total torque ripple of the motor, and it provides an effective method for torque ripple suppression for this kind of doubly salient double stator motor.

关 键 词：定位力矩抑制 双定子 磁通切换 磁路并联式 同心圆结构 

分 类 号：TM351[电气工程—电机]