海上風電場及雙饋式風電機組的仿真分析.pdf

1、天津大學碩士學位論文海上風電場及雙饋式風電機組的仿真分析姓名：吳良建申請學位級別：碩士專業(yè)：電機與電器指導教師：么莉20080601ABSTRACTChinahashugeoffshorewindresourcepotential，andthemarinewindpowerwillbethemostimportantgrowthpointofwindpowerindustryinthefutureAfterabriefoverviewo

2、ftheactualstateoftheuseofoffshorewindbothininternationalanddomestic，andthestateoftheartofwindpowertechnologythispaperfocusesontheexploitureofoffshorewindplantsandsimulationofitsgeneratorsystemThefirstpartisabouttheoffsho

3、rewindplantInthispart，theadvantageandmajorchallengesofdevelopingmarinewindpowerareexplained，andkeystepsarelisted，includingpreparatorywork，siteselection，supportstructuredesign，andintegrationtothegridThen，primarydesignofth

4、eoffshorewindpowergeneratorsystemarediscussed，whichconsistsofdesignofwindturbineandselectionofdrivingtechniquefromwindturbinetogeneratorItcomestoaconclusionthatafavoritegeneratorsystemforsuchoffshoreapplicationistheDoubl

5、yFedInductionGenerator(DFIG)，duetoitsadvantageinweightandoperationThesecondpartofthispaperisthesimulationofDFIGwindpowersystemThemathematicalmodelsofDFIGsystemarebuilt，includingrandomwindspeedmodel，variablespeedconstantf

6、requency(VSCF)windturbinemodel，DFIGmodelbasedondifferentreferenceframeFurthermoreastatespaceequationmodeloftheDFIGinfieldorientedcoordinatesisderivedanddiscussedThiscoordinatesystemoffersthepossibilityofdecoupledcontrolo

7、factiveandreactivepowerThestructureofthecontrolloopsarepresentedAtlast，thewholesystemmodelisfoundedbythesoftwareMatlab／SimulinkTheresultofexperimentapprovesthatthecontrolstrategyistrueNotonlythefrequencyofstatorcurrentis

8、constant，butalsothecontrolofstatoractiveandreactiveisdecoupled，andrealizesthetrackofthemaximalpowerofwindtcarbineKEYWORDS：Offshorewindplant，Variablespeedconstantfrequency(VSCF)，Doublyfedinductiongenerator(DFIG)，Vectorcon