AN IMPROVED PID AND REPETITIVE CONTROL FOR SINGLE PHASE INVERTERS OF PHOTOVOLTAIC POWER SYSTEMS

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1、硕士留学生学位论文ANIMPROVEDPIDANDREPETITIVECONTROLFORSINGLEPHASEINVERTERSOFPHOTOVOLTAICPOWERSYSTEMS作者姓名MuhammadArslan学科专业ElectricalandComputerEngineering指导教师YunjianPeng,AssociateProfessor所在学院AutomationScienceandEngineering论文提交日期2018年09月12日ANIMPROVEDPIDANDREPET

2、ITIVECONTROLFORSINGLEPHASEINVERTERSOFPHOTOVOLTAICPOWERSYSTEMSADissertationSubmittedfortheDegreeofMasterCandidate：MuhammadArslanSupervisor：AssociateProf.YunjianPengSouthChinaUniversityofTechnologyGuangzhou,China分类号：学校代号：10561学号：201622856314华南理工大学硕士学位论文A

3、NIMPROVEDPIDANDREPETITIVECONTROLFORSINGLEPHASEINVERTERSOFPHOTOVOLTAICPOWERSYSTEMS作者姓名：指导教师姓名、职称：申请学位级别：硕士学科专业名称：电气计算机工程研究方向：逆变电源控制方法论文提交日期：2018年07月06日论文答辩日期：2018年09月12日学位授予单位：华南理工大学学位授予日期：年月日答辩委员会成员：主席：冯颖委员：冯颖黎善斌刘富春刘俊峰AbstractInverters,whichareinstalle

4、dinphotovoltaic(PV)powersystems,arekeydevicestoturnoutputdirectcurrent(DC)ofPVarraystoalternativecurrent(AC)withaspecificwaveformrequiredbypowerload.Withtheirwidespreadapplicationandincreasinglarge-scaleofPVpowersystemsinutilitypowernetwork,thedisturba

5、ncesfromloadandlinefaultsorexternalinterferencesoftencauseseriousproblemsininverters,operatinginasafeandsteadyconditionandinverterscontrolproblemsonsuppressingthedisturbanceshavealwaysbeenfocusedbytheindustryandacademiccircles.Manyeffortsandacademicres

6、earchhavebeencarriedouttoimprovetheflexibleperformanceofPV-connectedinverters.Thisthesispresentsacontrolledmechanismofsingle-phaseinverterforPVsystem.ProportionalIntegralDerivative(PID)controllerperformsbetterintheexistenceofnoiseandhigherrorwhilediffi

7、cultinfine-tuning.TheproposedmethodinvolvestheadvantagesofPIDwithRepetitiveControl(RC)controllers,helpingPIDcontrollertodecreaseerrorfromlastperiodwhilestillusingPIDcontrollerforhandlingwithnoiseanderror.Firstofallthisdissertationestablishestheconversi

8、onmethodofsingle-phaseinverterofthephotovoltaicpowersystembyusingtheLCfilterandfindanovelmethodtocontrolthesystemwithimprovedperformanceandstability.Secondly,thisstudywilldivedeeperincontrollingmechanismofPIDandRCcontroltomakethesysteme