文档名：基于增强型扩张状态观测器的永磁同步电机低抖振高抗扰二阶终端滑模电流控制
摘要：永磁同步电机电流滑模控制具有较好的参数鲁棒性,但控制精度受到滑模抖振的影响,且抖振抑制与抗扰性之间存在矛盾.为此,该文提出一种基于增强型扩张状态观测器的二阶终端滑模电流控制方案,可以有效提升电流控制性能.通过二阶终端滑模控制器的设计,将一阶积分快速终端滑模嵌套在二阶非奇异终端滑模面中,使得滑模抖振得到较好的抑制,同时实现电流无稳态误差的快速收敛.通过引入扩张状态观测器对扰动信号的集总估计与补偿,缓解了抖振与抗扰性之间的矛盾,进一步提升了电流精度.针对数字控制的延迟影响,设计了Smith预估器,提升了扰动补偿精度.最后,通过实验对该文所设计的电流控制方案进行验证,并通过对比展示了该方案的有效性.
Abstract：Asthebottomcontrollinkoftheinteriorpermanentmagnetsynchronousmotor(IPMSM)system,thecurrentcontrolplaysacrucialroleinthesystem'sperformance.Thesliding-modecurrentcontrol(SMCC)oftheIPMSMhasthemeritofhighrobustnesstoparametermismatch.However,thecontrolaccuracyinpracticeissubjectedtosliding-modechattering,anditssuppressionwouldnegativelyaffecttheanti-disturbanceperformance.Inordertosuppressthechatteringofthetraditionalfirst-orderSMCCsystemandensuretheexcellentanti-disturbanceperformanceofthesystem,anenhancedextendedstateobserver(ESO)basedsecond-orderterminalslidingmode(TSM)controlstrategyisproposedtoimprovethefinalperformanceofthestatorcurrentcontrol.Thestructureofthesecond-orderTSMsurfaceisthatanintegralfastTSMsurfaceisnestedintothesecond-ordernon-singularTSMsurface.ThecoefficientsoftheintegralfastTSMsurfaceguaranteetherapidityofstatorcurrentconvergence,andtheovershootisnotobvious.Theintegraltermmakesthesystemfeedbackstatehavenosteady-statecurrenterror.Thesecond-orderTSMcontrolhassuperiorchatteringsuppressionabilityandretainstherobustnessofswitchingfunctiontoparameterdeviation.ByintroducingtheEESO,thedisturbanceisestimatedandcompensated,whichisbeneficialtoeasingtheconflictionbetweenchatteringsuppressionandanti-disturbance.ASmithpredictorisdesignedtoaddressnegativeeffectsofthedelayinherenttothedigitalcontrol.Consequently,thedisturbanceissuppressedwell.Experimentsbasedonan18kW-IPMSMhardwareplatformverifythecurrentcontrolstrategy.Thevoltagechatteringamplitudeofthesecond-orderTSMcontrolstrategyislessthan20%ofthatofthetraditionalSMCCstrategyattheratedspeed.Theamplitudeofthecurrenttrackingerrorisaffectedbyvoltagechattering.Thecurrenttrackingaccuracyishigh,thethree-phasecurrentsaresmooth,andthedistortionislowwhenvoltagechatteringbecomessmall.Thefeedbackcurrentcantrackthereferencesignalwithin2mstoachievetheengineeringrapidityofthecurrentloop.Tosimulatethedramaticchangeofbackelectromotiveforcecausedbyexternalinterference,a10Vstepdisturbanceissuddenlyaddedtotheq-axisinputofIPMSM.Thedisturbancerecoveredwithin10msafterthecurrentchange.ThestrategysolvestheproblemsoflargechatteringandthecontradictionbetweenchatteringanddisturbancesuppressioninthetraditionalSMCCofIPMSM.Theresultsoftheoreticalanalysisandexperimentalresearchareasfollows.(1)Theproposedstrategycanbettersuppresstheinfluenceofvoltagechatteringonthecurrenttrackingaccuracy.Itimprovesthesteady-stateanddynamicperformanceofthesystem,solvestheproblemsoflowsteady-stateaccuracyandlargefluctuationcausedbylargechatteringintraditionalSMCCstrategy,andensuresthatthemotorcurrentstatecantrackthereferencesignalinalimitedtime.(2)Thestrategyproposedimprovestheanti-disturbanceperformanceofthesystemeffectively.Thesecond-orderTSMcontrolstrategyreduceschattering,butitsdisturbanceimmunityworsens.ESOisdesignedtoestimatesystemdisturbanceandmakecompensationinthecontrollawtosolvethecontradictionbetweenchatteringsuppressionandanti-disturbance.(3)TheSmithpredictorisintroducedtoreducetheinfluenceoftimedelayinthesystembypredictingthecurrentonebeat,thusreducingtheresultingsysteminterferenceandcouplinginfluence.
作者：东野亚兰 杨淑英 王奇帅 谢震 张兴Author：DongyeYalan YangShuying WangQishuai XieZhen ZhangXing
作者单位：合肥工业大学电气与自动化工程学院合肥230009
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(8)
分类号：TM341
关键词：永磁同步电机 二阶终端滑模控制 扩张状态观测器 Smith预估器
Keywords：Permanentmagnetsynchronousmotor second-orderterminalslidingmodecontrol extendedstateobserver Smithpredictor
机标分类号：TP202V412TP183
在线出版日期：2024年4月29日
基金项目：安徽省科技重大专项，台达电力电子科教发展计划基于增强型扩张状态观测器的永磁同步电机低抖振高抗扰二阶终端滑模电流控制[
期刊论文] 电工技术学报--2024, 39(8)东野亚兰 杨淑英 王奇帅 谢震 张兴永磁同步电机电流滑模控制具有较好的参数鲁棒性,但控制精度受到滑模抖振的影响,且抖振抑制与抗扰性之间存在矛盾.为此,该文提出一种基于增强型扩张状态观测器的二阶终端滑模电流控制方案,可以有效提升电流控制性能.通过...参考文献和引证文献
参考文献
引证文献
本文读者也读过
相似文献
相关博文
基于增强型扩张状态观测器的永磁同步电机低抖振高抗扰二阶终端滑模电流控制 Enhanced Extended State Observer Based Second Order Terminal Sliding Mode Current Control for Permanent Magnet Synchronous Machine with Low Chattering and Improved Disturbance Rejection
基于增强型扩张状态观测器的永磁同步电机低抖振高抗扰二阶终端滑模电流控制.pdf
- 文件大小:
- 1.92 MB
- 下载次数:
- 60
-
高速下载
|
|
