149刘嘉文等不同收缩角下伞形风力机振动特性试验研究第2期第42卷第2期2023年4月内蒙古工业大学学报(自然科学版)JournalofInnerMongoliaUniversityofTechnology(NaturalScienceEdition)Vol.42No.2Apr.2023文章编号:1001-5167(2023)02-0149-08不同收缩角下伞形风力机振动特性试验研究刘嘉文1,2,包道日娜1,刘旭江1,刘东1,吴胜胜1,王鹏1(1.内蒙古工业大学能源与动力工程学院,呼和浩特010051;2.内蒙古鲁电蒙源电力工程有限公司,呼和浩特010020)SafetyanalysisofumbrellawindturbinestructurewithdifferentshrinkageanglesLIUJiawen1,2,BAODaorina1,LIUXujiang1,LIUDong1,WUShengsheng1,WANGPeng1收稿日期:2022-07-26基金资助:内蒙古自治区自然科学基金项目(2020MS05032);内蒙古自治区重点研发和成果转化计划项目(2022YFHH0048);鄂尔多斯市科技合作重大专项(2021EEDSCXQDFZ009)第一作者:刘嘉文(1995—),男,硕士研究生,主要从事风能利用技术方面的研究。E-mail:19953485@qq.com通信作者:包道日娜(1976—),女,博士,教授,主要从事风能利用技术方面的研究。E-mail:bdm125@163.com(1.SchoolofEnergyandPowerEngineering,InnerMongoliaUniversityofTechnology,Hohhot010051,China;2.InnerMongoliaLudianMengyuanElectricPowerEngineeringCo.Ltd.,Hohhot010020,China)Abstract:Inordertoverifythestructuralsafetyofumbrellawindturbineintheactualoperationprocess,thevibrationtestof5kWumbrellawindturbineprototypewascarriedouttostudytheinfluenceofwindspeedandcontractionangleonthevibrationcharacteristicsofumbrellawindturbine.Theanalysisresultsshowthatinthewindspeedrangeof5~7m/s,duetotheaeroelasticandinertialeffectsoftheblades,theverticalradialamplitudeofthetoweratdifferentheightsincreasessharplyat45oand60oshrinkageangles.Withtheincreaseofwindspeed,thebladesbecomerigidandtheamplitudedecreases.Astheshrinkageanglesincreases,thebladesgraduallyapproachthecentralvortex,andthehorizontalradialamplitudeofthetowerincreasesatdifferentheights.Comparativeanalysisoftheverticalandhorizontalradialvibrationaccelerationamplitudeofthetowershowsthatthetowerismainlyreflectedinthehorizontalradialbendingvibration.Theverticalradialvibrationaccelerationofthegen...