新型海上风机浮式基础设计与风机系统耦合动力研究-research on coupling power between floating foundation design of new offshore fan and fan system.docx

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2018-06-03 发布于上海
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新型海上风机浮式基础设计与风机系统耦合动力研究-research on coupling power between floating foundation design of new offshore fan and fan system.docx

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新型海上风机浮式基础设计与风机系统耦合动力研究-research on coupling power between floating foundation design of new offshore fan and fan system

Thecontrolsystemofwindturbinecanadjustthebladepitchtokeeptheratedpowerofthegeneration.Whenthebladepitchcontrolfails,thebladepitchimbalancewillhappen.Thisisoneofthemaincausesofthetorqueexcitationoftheshaft.Thispapersimulatesthisaccidentalconditionandcomparesthe6-DOFresponsetimeseriesandspectrawiththoseinnormalcondition.Itisshownthatthebladepitchimbalanceinfluencestheresponsesofthewindturbinesystemsignificantly,especiallytheside-to-sidemotions,whicharerelatedtoroll,swayandyaw.Meanwhile,thetransientresponsesinthesemotionsareobserved.Whenthebladepitchcontrolmalfunctions,theexcitationsoccurinrollandyawattherotor1pand2pfrequencies.Accordingly,thetower-baseside-sideshearforcechangesgreatly.KEYWORDS：OffshoreWindTurbine,FloatingWindTurbine,CoupledDynamicAnalysis,Second-OrderWaveForce目录第一章绪论..............................................................................................................................11.1研究背景.........................................................................................................................11.2海上风机介绍.................................................................................................................31.3研究意义.........................................................................................................................91.4研究现状与不足...........................................................................................................111.5研究内容与方法...........................................................................................................15第二章新型海上风机浮式基础结构设计与优化................................................................172.1引言...............................................................................................................................172.2设计思路.......................................................................................................................172.3浮式基础结构介绍.......................................................................................................