摘要近年来风力发电机数量不断增多，探究风力发电变流器的响应性能也愈趋迫切。论文主要目的是探究1.5MW风力发电系统的响应性能，分析变流系统的数学模型并确定相应的控制策略，为风力发电系统的设计提供参考。在永磁同步风力发电系统的理论基础上，利用仿真软件Matlab/Simulink建模得到风能利用系数和功率及转速曲线，并分析曲线中各量变化对系统的影响。同时建立PMSG的数学模型。通过对机侧和网侧变流器数学模型的分析，探究了其两侧变流器的控制方法，建立电机侧控制器模型以及网侧控制器模型。最后对永磁风力发电系统进行性能分析，分析表明直流母线电压和逆变器侧电流对系统影响较大。进一步建立1.5MW直驱永磁同步风力发电系统模型。就风速跳变对发电系统进行仿真，各量的仿真波形表明所采用的控制方法符合系统运行特性，所建立的模型同样符合系统要求。关键词:变流器；并网运行；Matlab；建模AbstractWiththeincreasingnumberofwindturbinesinrecentyears,theresponseperformanceofwindpowerconvertersisbecomingmoreandmoreurgent.Themainpurposeofthispaperistoexploretheresponseperformanceof1.5MWwindpowergenerationsystem,analyzethemathematicalmodelofthevariableflowsystemanddeterminethecorrespondingcontrolstrategy,whichprovidesreferenceforthedesignofwindpowergenerationsystem.Basedonthetheoryofpermanentmagnetsynchronouswindpowergenerationsystem,thewindenergyutilizationcoefficient,powerandrotationalspeedcurveareobtainedbyusingsimulationsoftwareMatlab/simulink,andtheinfluenceofeachquantitychangeinthecurveonthesystemisanalyzed.ThemathematicalmodelofPMSGisalsoestablished.Throughtheanalysisofthemathematicalmodelofthemachinesideandthenetworksideconverter,thecontrolmethodsofthetwosidesoftheconverterareexplored,andthemodelofthemotorsidecontrollerandthenetworksidecontrollerisestablished.Finally,theperformanceanalysisofpermanentmagnetwindpowergenerationsystemshowsthattheDCbusvoltageandinvertersidecurrenthavegreatinfluenceonthesystem.Themodelof1.5MWdirect-drivepermanentmagnetsynchronouswindpowergenerationsystemisfurtherestablished.Thesimulationofthewindspeedjumponthepowergenerationsystemshowsthatthecontrolmethodisinaccordancewiththeoperatingcharacteristicsofthesystem,andthemodelalsoconformstothesystemrequirements.Keywords:ConverterParallelOperationMatlabSystemmodel目录第1章绪论····································································································11.1风力发电的发展····················································································21.1.1国内外风力发电的发展史·······························································21.2研究目的和意义····················································································3第2章永磁风力发电系统的运行原理···································································42.1风力发电系统·······················································································42.2风能利用系数及功率特性··············································...
