立軸風力機動態(tài)特性的研究.pdf

1、重慶大學碩士學位論文立軸風力機動態(tài)特性的研究姓名：白小芳申請學位級別：碩士專業(yè)：工程力學指導(dǎo)教師：張華20070420重慶大學碩士學位論文英文摘要ABSTRACTThemankindfacestheseriouschallengeofexhaustedresourceandpollutedenvironmentdaybydaywiththedevelopmentofthesocietyandtheprogressoftechnology

2、Atthemoment，thewindenergyisregardedasthenewenergywiththecharacteristicofreservingabundantlyanddistributingwidelythewindenergyisthenewenergyofthemostcheapestandcleanerwimthemostexploitedvaluableSotheresearchsubjecttowindt

3、urbineisintensifiedgradually，andwemustpromotetheresearchofwindturbineinordertoincreaseusingefficiencyofwindenergyInthisdissertation，thestructuraldynamicscharacteristicoftheverticalaxiswindturbine(VAWT)isdiscussedbythemod

4、alanalysismethodNowthemodalanalysismethodbecomestobeallimportantwaytogetthestructuraldynamiccharacteristicsofkineticsystemThemodalanalysismethodseemstobemoreeffectiveforthesystemsthatwithmultipledegreesoffreedomsuchasVAW

5、TTherearetwomainkindsofmodalanalysismethods，theexperimentalmodalanalysisandthecomputationalmodalanalysisWhentheVAWTisoperating，thenaturefiequeneyandcharacteristicisvariable，thereisnomatureexperimentmethodthatCantestthedy

6、namiccharacteristicsparameteraccuratelyBasedontheinvestigationofresearchconditionofhorizontalaxiswindturbine(HAWT)andⅥ州T，VibrationcharacteristicofVAWTisstudiedbymodalanalysismethodsForexample，A500KWVAWTsmodelisfounded，an

7、dcomputationalmodelanalysismethodsarecarriedoutforitDuringthecalculating，togetthemoreintuitionisticresults，cableandwindturbineareanalyzedseparatelyandsolvethedynamicequationbyLanczosmethodthenreportthevibrationcharacteri

8、sticparameter——na：“Irefrequencyandpromotingfrequencyandthecampbelldiagramsaregained，whichcalldisplayrelationbetweennaturefrequencyandrotatespeedAtthesanletime，thispaperalsodiscussesthedynamiccharacteristicofturbinewithca