不同励磁方式的电励磁双凸极电机正弦化设计与分析  

Sinusoidal Design and Analysis of Doubly Salient Electro-magnetic Machine With Two Different Excitation Modes

作　　者：蒋思远 周波[1] 黄旭珍[1] 熊磊 陈锦春 魏佳丹[1] JIANG Siyuan;ZHOU Bo;HUANG Xuzhen;XIONG Lei;CHEN Jinchun;WEI Jiadan(Jiangsu Key Laboratory of New Energy Generation and Power Conversion(Nanjing University of Aeronautics&Astronautics),Nanjing 211106,Jiangsu Province,China)

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学),江苏省南京市211106

出　　处：《中国电机工程学报》2023年第4期1598-1610,共13页Proceedings of the CSEE

基　　金：国家自然科学基金(重点项目)(51737006)。

摘　　要：该文在分析传统电励磁双凸极电机(doubly salient electro-magnetic machine,DSEM)反电势畸变的基础上,对两种不同励磁方式的DSEM进行正弦化设计,以实现该磁阻电机的正弦驱动,减小转矩脉动。提出相位调制正弦化的方法,指出该方法的设计原则,有效解决传统斜极DSEM反电势畸变、正弦度低的问题。研究发现,偶数相的DSEM经过特殊的定转子极弧系数设计后总有两相存在严格的互补关系,使所提正弦化方法的实现成为可能;并进一步提出提高反电势波形的对称性和正弦度的方法。随后,将设计的正弦化定子集中励磁电励磁双凸极电机、正弦化定子分布励磁电励磁双凸极电机和传统DSEM进行仿真对比分析。因为正弦化定子分布励磁电励磁双凸极电机性能最优,故加工其样机进行实验验证。实测样机不同励磁电流下空载反电势的总谐波失真均小于4%,采用基于空间矢量脉宽调制的正弦波驱动方式,实现DSEM的正弦化驱动,减小其输出转矩脉动。仿真和实验结果证明了DSEM正弦化设计和采用正弦驱动抑制转矩脉动的有效性,为高性能驱动应用提供了新的电机类型选择。Based on the analysis of the back electromotive force(EMF) distortion of traditional doubly salient electro-magnetic machine(DSEM), the sinusoidal design of DSEM with concentrated and distributed magnetomotive forces is carried out, which realizes sinusoidal drive of this reluctance motor and reduces the torque ripple. The sinusoidal design method by phase modulation is proposed, and the design principle is pointed out, which effectively solves the problems of back EMF distortion and low sinusoidal degree of traditional DSEM with rotor-skewing. It can be found that even number phase DSEM has complementary phases through a special pole arc design of stator and rotor, making the sinusoidal method possible. Furthermore, the method to improve the symmetry and sinusoidal quality of back EMF is proposed. Then, the sinusoidal DSEM with concentrated magnetomotive forces(SDSEM-CF), sinusoidal DSEM with distributed magnetomotive forces(SDSEM-DF) and traditional DSEM are simulated and analyzed. The SDSEM-DF prototype is developed for experimental verification due to its optimal torque performance. The total harmonic distortions(THD) of back EMF under different excitation currents are all less than 4%. Based on vector control, the sinusoidal drive of DSEM is realized without increasing the control complexity, which can greatly reduce the torque ripple. The effectiveness of DSEM sinusoidal design and sinusoidal drive to suppress torque ripple is proved by simulation and experiment, which provides a new motor type selection for high performance drive applications.

关 键 词：电励磁双凸极电机 转矩脉动 正弦化 矢量控制 

分 类 号：TM352[电气工程—电机]