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1、DOI:10.16356/j.1005-2615.2007.01.026第39卷第1期南京航空航天大学学报Vol.39No.12007年2月JournalofNanjingUniversityofAeronautics&AstronauticsFeb.2007切向结构永磁同步电机中磁钢厚度对性能的影响赵朝会朱德明秦海鸿严仰光(南京航空航天大学航空电源实验室,南京,210016)摘要:提出了切向结构永磁同步电机中磁钢厚度的约束条件;依据电机学理论并结合有限元计算方法,研究了气隙长度恒定时不同极对数下气隙磁密、每极磁通与磁钢厚度的关系,探讨了磁钢厚度对电机的过载能力、
2、铁耗等性能的影响;在气隙长度发生变化时,为了保证漏磁大小不变,讨论了气隙与非导磁衬套厚度、磁钢厚度的关系。并指出:(1)气隙恒定时,随着磁钢厚度的增加,不同极对数时磁钢体积增大所提供的磁势对每极磁通的影响有所不同;铁耗和过载能力随磁钢厚度的增加而增大。(2)气隙增大时,为了保证气隙磁密和漏磁不变,必须增加非导磁衬套的厚度。(3)极对数增加时,减小磁钢厚度能提高电机的性价比。关键词:切向结构永磁同步电机;磁钢厚度;气隙磁通;约束条件中图分类号:TM313;TM303;TM351文献标识码:A文章编号:1005-2615(2007)01-0121-06Relation
3、BetweenAlnicoThicknessandAirGapFluxofIPMMachineZhaoChaohui,ZhuDeming,QinHaihong,YanYangguang(Aero-PowerSci-TechCenter,NanjingUniversityofAeronautics&Astronautics,Nanjing,210016,China)Abstract:TherestrictionconditionoftherareearthmagnetthicknessispresentedinIPMsynchronousmachine;accord
4、ingtotheelectricalmachinetheoryandthefiniteelementmethod,therelationbetweenairgapfluxdensityandrareearththicknessisanalyzed,everypolefluxandtherareearthmagnetthick-nessontheairgaplengthisconstant;rareearththicknessinfluenceonoverloadingperformanceandironlossisdiscussed.Tokeepleakagefl
5、uxtobeconstant,therelationisanalyzedbetweentheairgaplengthandthenon-magneticmaterialthicknesswiththerareearthmagnetthicknessundertheairgaplengthvariety.Anditpointsoutthat(1)Whenairgapisconstant,withtheincreaseoftherareearthmagnetthickness,magnetismpotentialprovidedthroughtherareearthm
6、agnetvolumeincreasingwiththeinfluencetoperpolefluxunderpolenumbersisdifferent,butironlossandoverloadingperformanceincrease;(2)Toensuretheairgapfluxdensityandleakagefluxtobeconstant,therareearthmagnetthicknessincreaseswiththeincreaseofairgaplength;(3)Therareearthmagnetthicknessdecrease
7、stoimprovetheperformancewhenpolenumbersincrease.Keywords:IPMsynchronousmachine;thicknessoftherareearthmagnet;airgapflux;restrictioncon-dition比和转矩/体积比,并且效率高,因此近年来越来越引言多地被应用于伺服系统、电力牵引、办公自动化、家[1-2]切向结构永磁同步电机具有较大的转矩/电流用电器等场合。基金项目:国家自然科学基金(50337030)重点资助项目。收稿日期:2005-12-23;修订日期:2006-02-10作者简
8、介:赵朝会
