周向错角开关磁阻电机及其直接瞬时转矩控制  

Circumferentially Staggered Switched Reluctance Motor and Its Direct Instantaneous Torque Control

作　　者：周云红[1] 刘晨宇 李汉杰 陈泽楠 谭正一 ZHOU Yunhong;LIU Chenyu;LI Hanjie;CHEN Ze’nan;TAN Zhengyi(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167

出　　处：《电机与控制应用》2024年第9期90-102,共13页Electric machines & control application

基　　金：国家自然科学基金项目(51977103);江苏省重点研发计划项目(BE2021094);南京工程学院科技创新基金项目(YKJ202208)。

摘　　要：传统开关磁阻电机由于其双凸极定、转子铁心结构以及开关型供电方式会造成强转矩脉动。针对此问题,提出了一种新型低转矩脉动周向错角开关磁阻电机。结合电机结构介绍了其运行机理,并对绕组的电感特性和转矩出力进行了分析。该电机采用内-外双定子结构,转子上同时设置内凸极和外凸极,且内、外定子铁心之间以及转子内、外凸极之间在周向上均相互错开一定的角度。内定子极上绕有辅助绕组,可以在主绕组换相期间提供辅助转矩以补偿转矩跌落,从而降低转矩脉动。利用场路耦合联合仿真,分别构建了传统开关磁阻电机与周向错角开关磁阻电机的直接瞬时转矩控制系统,对比两者在匀速运行工况下的转矩脉动情况,结果表明相较于传统开关磁阻电机,周向错角开关磁阻电机的转矩脉动更小,具有良好的转矩脉动抑制效果。The traditional switched reluctance motor(SRM)experiences significant torque ripple due to its doubly salient stator-rotor core structure and switched power supply mode.To address this issue,a novel low-torque-ripple circumferentially staggered SRM was proposed.This paper introduced the operating mechanism of the motor structure and analyzed the inductance characteristics of the windings and torque output.The motor adopted an inner-outer double stator structure,where the rotor was equipped with both inner and outer salient poles.The inner and outer stator cores,as well as the rotor′s inner and outer salient poles,were staggered at a certain angle.Auxiliary windings are wound on the inner stator poles to provide auxiliary torque during the commutation of the main windings,compensating for the torque drop and thus reducing torque ripple.By utilizing field-circuit coupling co-simulation,direct instantaneous torque control systems for both the traditional SRM and the circumferentially staggered SRM were constructed.A comparison of their torque ripple performance under steady-state operation showed that,compared with the traditional SRM,the circumferentially staggered SRM achieves smaller torque ripple and demonstrated excellent torque ripple suppression effects.

关 键 词：开关磁阻电机 转矩脉动抑制 周向错角 直接瞬时转矩控制 场路耦合 

分 类 号：TM352[电气工程—电机]