定子齿偏移永磁容错电机设计与分析  

Design and Analysis of Stator Tooth Offset-based Permanent Magnet Fault-tolerant Machine

作　　者：郑蓉蓉 王凯[1] 李健 朱姝姝[1] 胡耀华 曾凡铨 崔业兵 ZHENG Rongrong;WANG Kai;LI Jian;ZHU Shushu;HU Yaohua;ZENG Fanquan;CUI Yebing(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu Province,China;Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration,Nanjing 211106,Jiangsu Province,China;Shanghai Institute of Spaceflight Control Technology,Minhang Distirct,Shanghai 200233,China)

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市211106 [2]南京机电液压工程研究中心,江苏省南京市211106 [3]上海航天控制技术研究所,上海市闵行区200233

出　　处：《中国电机工程学报》2020年第22期7452-7459,共8页Proceedings of the CSEE

基　　金：江苏省杰出青年基金项目(BK20180016);上海伺服系统工程技术研究中心(15DZ2250400)。

摘　　要：为提高传统永磁电机的容错能力,定子绕组常采用隔齿绕的方式,但这种方式增加了电机的转矩脉动。通过极槽数的选取和容错齿的设计,实现了自感增加以及相与相之间互感抵消,大幅提高了永磁电机的容错能力。在此基础上,提出偏移电枢齿和齿靴的方法,充分利用了电枢槽面积,提高了电机的输出转矩,降低了转矩脉动,解决了传统永磁容错电机容错能力、功率密度和转矩脉动难以兼顾的问题。该文首先介绍基于定子齿偏移永磁容错电机的结构特点和容错原理,对传统永磁电机和定子齿偏移永磁容错电机进行优化设计,并对比分析其电磁性能,包括气隙磁密、反电势、输出转矩、自感和互感等。最后,通过样机的转矩和电感测量实验,并与仿真结果进行对比,验证了理论分析的正确性。In order to improve the fault-tolerant capability of traditional permanent magnet machine(TPMM), the stator windings are usually separated by teeth, but this method increases the torque ripple of the machine. In this paper, through the selection of the number of pole-slot and the design of fault-tolerant teeth, self-inductance increases and mutual inductance cancellation between phases were realized, which greatly improves the fault-tolerant capability of PM machine. On this basis, the method of shifting armature teeth and teeth tip is put forward which makes full use of the armature slot area to improve the output torque and reduce the torque ripple. This paper first introduced the structural characteristics and fault-tolerant principle of stator tooth offset permanent magnet fault-tolerant machine(STO-PMFTM). The electromagnetic performance of TPMM and STO-PMFTM, including air gap flux density, back-EMFs, output torque, self-inductance and mutual inductance were compared and analyzed. Finally, the theoretical analysis was verified by measuring torque and inductance of the prototype and comparing the experimental results with the simulation results.

关 键 词：永磁容错电机 容错齿 电枢齿齿偏移 电枢齿齿靴偏移 自感 互感 

分 类 号：TM351[电气工程—电机]