发电电动机磁极连接线选型设计2023.№3发电电动机磁极连接线选型设计卢伟甫，刘殿海，桂中华，孙晓霞，季晓林(国网新源控股有限公司抽水蓄能技术经济研究院，北京100761)［摘要］发电电动机转子磁极连接线同类化故障频发，选型设计成为关键问题。本文通过三维有限元参数化建模，分析五种典型结构磁极连接线在不同容量和转速下的应力特点，结果表明各典型结构局部最大应力与转速的关联度较大，提出高速发电电动机的磁极连接线建议采用切向连接结构，中速发电电动机的磁极连接线建议采用垂直磁轭U型连接，低速发电电动机的磁极连接线建议采用分体铜板U型连接。同时对U型连接引出头的弯角和高度、引出段与引出头的连接位置、连接线的厚度、以及连接线固定螺栓规格、个数等关键设计参数的选型进了分析，提出增大引出头弯角和高度，增加引出段长度、增加连接线厚度、选用较大规格和较多数量的螺栓固定有助于减小磁极连接线受力。分析结果可为发电电动机磁极连接线设计提供可靠的选型依据。［关键词］发电电动机;磁极连接线;参数化建模;应力分布;选型设计［中图分类号］TM32［文献标志码］A［文章编号］1000-3983(2023)03-0028-08SelectionDesignofMagneticPoleConnectionLineinGeneratorMotorsLUWeifu，LIUDianhai，GUIZhonghua，SUNXiaoxia，JIXiaolin(Pumped-storageTechnological＆EconomicＲesearchInstitute，StateGridXinyuanCompanyLtd．，Beijing100761，China)Abstract:Thesimilarfaultsofmagneticpoleconnectionlineingeneratormotorsoccurfrequently，anditsselectiondesignbecomesakeyproblem．Thethree-dimensionalfiniteelementparametricmodelswerebuilttoanalyzethestresscharacteristicsoffivetypicalmagneticpoleconnectionlinesunderdifferentcapacitiesandspeeds．Ｒesultsshowthatthecorrelationbetweenthelocalmaximumstressofeachtypicalstructureandtherotationalspeedislarge．Thetangentialconnectionstructureissuggestedforthemagneticpoleconnectionlineofhigh-speedgeneratormotors，theverticalyokeU-typeconnectionstructureissuggestedforthemagneticpoleconnectionlineofmedium-speedgeneratormotors，andtheU-typesplitcopperplateconnectionstructureissuggestedforthemagneticpoleconnectionlineoflow-speedgeneratormotors．Meanwhile，theselectionofkeydesignparameterssuchasthebendingangleandheightoftheU-s...
