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时间:2017-12-08
《变速恒频无刷双馈风电机组励磁电源研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第38卷第23期电力系统保护与控制VO1-38NO.232010年l2月1口PowerSystemProtectionandControlDec.1,2010刁又速恒频无刷双馈风电机组的励磁电源研究王琦,陈小虎。,袁越27纪延超(1.南京师范大学电气与自动化学院,江苏南京210042;2.河海大学能源与电气学院,江苏南京210098;3.金陵科技学院机电工程系,江苏南京211169;4.哈尔滨工业大学电气工程系,黑龙江哈尔滨150001)摘要:基于同步坐标下的无刷双馈电机的数学模型,研究变速恒频
2、无刷双馈风电机组的矩阵变换器式交流励磁电源,提出了矩阵变换器的SPWM调制策略,并验证了矩阵变换器可以满足无刷双馈风电机组的运行条件。将矩阵变换器与电压型双PWM控制交一直一交变频器从响应速度和谐波含量方面,进行了详细的分析比较。在相同情况下,采用矩阵变换器励磁时,响应速度优于电压型双PWM交一直一交变换器。对矩阵变换器交流励磁变速恒频无刷双馈风电机组进行仿真分析,发电机组输出电流的谐波含量少。关键词:风力发电;变速恒频;无刷双馈电机;矩阵变换器;谐波Studyonexcitationsourc
3、eofvariable-speedconstant--frequencybrushlessdouble—fedwindpowergeneratorsWANGQi1,2,CHENXiao—hu。,YUANYue,JIYan—chao(1.SchoolofElectrical&Automation.NanjingNormalUniversity,Nanjing210042,China:2.CollegeofEnergyandElectricalEngineering,HohaiUniversity,
4、Nanjing210098,China;3.DepartmentofElectromechanicalEngineering,JinlingInstituteofTechnology,Nanjing211169,China;4.DepartmentofElectricalEngineering,HarbinInstituteofTechnology,Harbin150001,China)Abstract:AccordingtothemathematicalmodeloftheVSCFbrushl
5、essdoubly-fedgeneratorinsynchronouscoordinates,thepaperstudiesmatrixconverterACexcitedpowerofvariablespeedconstantfrequencybrushlessdouble—fedwindgenerators,putsforwardSPWMcontrollingstrategiesofmatrixconverters.andverifiestheoperationa1conditionsofm
6、atrixconvertersthatcanmeetthedemandsofbrushlessdouble—fedwindgenerator;thenmakesathoroughcomparisonbetweenmatrixconvertersandvoltagedualPWMACDC.ACconvertersfromtheaspectsofresponsespeedandharmoniccontent.Underthesamecircumstances.whenmatrixconverteri
7、Sadoptedtobetheexcitation.theresponsespeediSfasterthanthatofdualPWMAC—DC.ACconverter.Inaddition.throughthesimulationanalysisofmatrixconverterACexcitedvariablespeedconstantfrequencybrushlessdouble—fedwindgenerators,thestudyfindsthattheharmonicCOntento
8、ftheoutputcurrentiSsmal1..Keywords:windpowergeneration;variable·-speedconstant·-frequency;brushlessdouble-fedmachine;matrixconverter;harmonic中图分类号:TM761文献标识码:A文章编号:1674—3415(2010)23—0026—06机控制绕组励磁电压的控制是由变频器来实施的。0引言它承担着产生发电机控制绕组励磁电压相量,传输风力发电机组并网发电时,要求
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