8/6极开关磁阻电机两相励磁电磁转矩分析  

Analysis on two-phase excitation electromagnetic torque of 8/6 switched reluctance motor

作　　者：弓锵[1] 曲尔光[1] 刘艳芳[1] 

机构地区：[1]运城学院机电工程系,山西运城044000

出　　处：《现代电子技术》2012年第12期176-178,共3页Modern Electronics Technique

基　　金：山西省教育科学规划项目(GH-09072)

摘　　要：为了准确掌握SR电机两相励磁状态下的电磁转矩情况,针对四相8/6极SR电机,采用准线性模型,从单相励磁运行时电磁转矩入手,将单相励磁转矩计算结果扩展至两相励磁运行状态。根据四相8/6极SR电机结构特点,在一个极矩下电磁转矩的变化过程中增加了两个过渡阶段,从而推导出两相励磁运行时电磁转矩的计算公式,绘制了单相与两相励磁转矩波形图,分析了两相励磁运行特点。最终从电磁转矩计算公式和转矩波形图上验证了两相励磁是SR电机提高转矩平稳性重要方法这一结论。In order to accurately predominate the electromagnetic torque of SR motor in the state of two-phase excitation operation, the prelinear flux model was used for the four-phase 8/6 SR motor. Proceeding from the electromagnetic torque in single-phase excitation operation, the calculation results of single-phase excitation torque were spreaded to the two-phase exci- tation operation condition. According to the structural features of four-phase 8/6 SR motor, two transition stages are added in the process of the electromagnetic torque changing under a polar moment, a calculation formula of the two-phase excitation electromagnetic torque was derived, the waveforms of single-phase and the two-phase excitation torque were drawn, and the two-phase excitation operational characteristics were analyzed. The conclusion that the two-phase excitation is the important method for SR motor to increase the torque smoothness was verified by the calculation formula and the waveform drawings.

关 键 词：两相励磁 准线性模型 电磁转矩 SR电机 

分 类 号：TN911-34[电子电信—通信与信息系统] TM352[电子电信—信息与通信工程]