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ID:5279049
大小:1.48 MB
页数:8页
时间:2017-12-07
《永磁同步牵引电机有效磁链观测与转矩控制》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第11卷第5期铁道科学与工程学报Volume11Number52014年10月JournalofRailwayScienceandEngineeringOctober2014永磁同步牵引电机有效磁链观测及转矩控制①1,21,3221,2赵凯辉,陈特放,张昌凡,何静,黄刚(1.中南大学交通运输工程学院,湖南长沙410075;2.湖南工业大学电气与信息工程学院,湖南株洲412007;3.中南大学信息科学与工程学院,湖南长沙410075)摘要:建立基于有效磁链的永磁同步牵引电机模型,提出基于有效磁链概念的非奇异终
2、端滑模观测器和精确转矩闭环控制方法。首先,在α-β坐标系中构建龙贝格-滑模自适应滑模观测器,准确估计出定子电阻和q轴电感并作为有效磁链滑模观测器的输入;其次,在α-β坐标系中构建有效磁链非奇异终端滑模观测器,并基于滑模等值控制方法实现了有效磁链观测,进而实现转矩的实时估算,以此和转矩给定值构成精确转矩闭环控制,从而提高轨道交通驱动系统的转矩控制精度,改善了轨道交通控制系统的性能。该方法不仅适用于表贴式永磁同步电机,而且适用于内置式永磁同步电机。仿真结果验证了方法的可行性和有效性。关键词:永磁同步电动机;龙贝
3、格-滑模观测器;非奇异终端滑模观测器;有效磁链;转矩闭环控制中图分类号:TM351文献标志码:A文章编号:1672-7029(2014)05-0146-08Effectivefluxobservationandtorquecontrolforpermanentmagnetsynchronousmotorofrailwayvehicles1,21,3221,2ZHAOKaihui,CHENTefang,ZHANGChangfan,HEJing,HUANGGang(1.SchoolofTrafficandTra
4、nsportationEngineering,CentralSouthUniversity,Changsha410075,China;2.SchoolofElectricalandInformationEngineering,HunanUniversityofTechnology,Zhuzhou412007,China;3.SchoolofInformationScienceandEngineering,CentralSouthUniversity,Changsha410075,China)Abstract
5、:Thepermanent-magnetsynchronoustractionmotormathematicalmodelofactivefluxwasestablished,andanonsingularterminal-sliding-modeobserver(NTSMO)basedoneffectivefluxandaprecisetorquecontrolmethodwereproposed.AnadaptiveLuenberger-slidingmodeobserverwasconstructe
6、dinα-βcoordinatetoestimatethestatorresistanceandq-axisinductance,whichisregardedastheinputtotheactivefluxobserver.TheNTSMOofactivefluxwasconstructedinα-βstatorcoordinateframe,andactivefluxwasobservedbyapplyingslidingmodeequivalentcontrolmethodology,soasto
7、realizethereal-timeestimationoftorque.Thetorqueclosed-loopcontrolsystemwasconstitutedcombiningthetorquecommand.Thetorquecontrolprecisionofthedrivingsystemcouldbeimproved,andthedrivingperformanceofrailwayvehicleswasfulfilledandguaranteed.Themethodnotonlyap
8、pliestosurface-mountedpermanentmagnetsynchronousmotors(SPMSM),butalsotointeriorpermanentmagnetsynchronousmotor(IPMSM).Thesimulationresultsverifythefeasibilityandeffectivenessofthemethod.Keywords:permanentmagn
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