2009年2月电工技术学报Vo1．24NO．2第24卷第2期TRANSACTIONSOFCHINAELECTROTECHNICALSoCIETYFeb．2009新型整距绕组双凸极永磁电机工作原理及特性张建忠程明朱孝勇赵文祥花为(东南大学电气工程学院伺服控制技术教育部工程研究中心南京210096)摘要提出了一种新型整距绕组双凸极永磁(DSPM)电机，分析了其工作原理，通过有限元方法计算4／6极整距绕组电机的磁场并对电机磁链、反电动势、电感及转矩等特性进行的分析表明，整距绕组DSPM电机具有双极性的磁链，在不改变结构的情况下电机的输出功率与集中绕组DSPM电机相等，可以减少铜导体用量，提高运行效率。在此基础上提出了两种增加整距绕组DSPM电机输出功率的方法，并对改进的三相24／10极整距绕组DSPM电机的反电动势进行了理论分析和实验研究，所得结果不仅证明了本文理论分析的正确性，而且首次揭示了磁通切换型永磁(FSPM)电机本质上就是一种整距绕组双凸极永磁电机，FSPM电机其功率密度高的内在原因并非磁链的双极性，而是多用了永磁材料，增强了气隙磁密。同时也说明了新型整距绕组DSPM电机较传统的集中绕组DSPM电机具有更高的做功能力。关键词：整距绕组双凸极磁通切换双极性单极性永磁电机中图分类号：TM351PrincipleandAnalysisofDoublySalientPermanentMagnetMachineWithNovelFull-PitchWindingsZhangJianzhongChengMingZhuXiaoyongZhaoWenxiangHuaWei(EngineeringResearchCenterforMotionControlofMOESoutheastUniversityNanjing210096China)AbstractInthispaper，adoublysalientpermanentmagnet(DSPM)machinewithnovelfull·pitchwindingsisproposed．Theoperatingprincipleisanalyzedandthefiniteelementmethodisusedtocalculatethefluxdistributionsof4／6一polefullypitchedDSPMmachine．Thestaticcharacteristicssuchasfluxlinkage，backEMF,inductance，andstatictorqueshowthatthefullpitchedDSPMmachinehasbipolarfluxvariation，andtheOHtputpowerisequaltothepreviousDSPMmachinewithconcentratedwindings，withdecreasedcopperconsumptionandhighereficiency．Moreover，twowaystoimprovetheoutputcapabilityoftheDSPMmachineareproposed．Animprovedthree—phase24／10-polefullypitchedDSPMmachinewasmanufactured，analyzedandtested，andtheresultnotonlyverifiesthecorrectnessofthetheoreticalanalysis，butalsorevealsinthefirsttimethatthefluxswitchingpermanentmagnet(FSPM)machineisafullpitchedDSPMmachineinnatureandthehigherpowerdensityoftheFSPMmachineisduetoitsincreasedairgapfluxdensitybyusingmorepermanentmagnet，insteadofthebipolarfluxvariation．Italsoshowsthattheimprovedfull—pitchwindingDSPMmachinehashigherpoweroutputcapabilitythantheconcentratedwindingDSPMmachine．Keywords-Full—pitchwinding，doublysalient，fluxswitching，bipolar，homopolar，permanentmagnetmachine