外文翻译--小型网络互联风力发电机功率器件可靠性分析(英文)外文翻译--小型网络互联风力发电机功率器件可靠性分析(英文)

阳光彩票平台 www.luanucci.com 宽屏显示 收藏 分享

阳光彩票预览需要最新版本的Flash Player支持。
您尚未安装或版本过低,建议您

Permanentmagnetgeneratoraandconversiononeconditioningoptionfromthepointofviewofpowerconditioningsystemreliability.TheanalysisalsorevealsthatnewresearchisrequiredtodeterminearobustpowerelectronicsconfigurationforsmallwindturbineconvergenerationWECSsubsystemsconverter/invinanycovariatesandthereforeitisdesirabletoinvestigatethemagnitudeoftheireffectsonthesystemreliability.Reliabilitycalculationconsiderthevoltageorcurrentasacovariateforanelectromechanicalsystem1,whilethereliabilityofpowerelectroniccomponentsisstronglyinfluencedbythecomponenttemperatureandvariations2.Knowledgeofthereliabilityofpowerelectroniccomponentsisakeyconcernwhendifferentiatingbetweentopolpurelystatisticalmethods8,fromthemanufacturersprovideddata3,7orusingthemilitaryhandbookdata9,whichconsiderrectifier,converterandinverterasatotalsystemandneglecttheiroperatingpointthatcouldvaryfromoneusertoother.Moreover,thetotalnumberofcomponentscouldvaryforasamesysteminordertomeetacertaincriteriaoftheoverallsystem.AlthoughhighercomponentsinthePCSwillexhibitlessreliabilityandviceversa,buttheeffectsofthecovariatescouldbedifferentandconsequentlyleadingtoavariationinthereliability10.Furthermore,aneedofthereliabilityevaluationforthePCSCorrespondingauthor.Tel.17097492357.AppliedEnergy8620091617–1623ContentslistsavailableEmailaddressmda04mun.caMd.Arifujjaman.ifthesystemisoffgridleadingtounavailabilityofpower.Inlightofthis,thereisaneedforreliabilityevaluationofsmallWECSinordertodetermineaconfigurationthatisefficientandreliable.AlmostallcommerciallyavailablesmallwindturbinesarebasedonPMGs.ThepowerconditioningsystemsPCSsforgridconnectionofthePMGbasedconfigurationrequiresarectifier,boostconverter,andagridtieinverter.ThereliabilityanalysisofsuchPCSisgreatlyinfluencedbytheoperatingconditions,i.e.,calculatedreliabilityvalue.Rohoumaetal.7providedareliabilitycalculationforanentirePVunitwhichcanbeconsideredmoreuseful,buttheapproachlacksvalidjustificationasthedataprovidedbytheauthoristakenfromthemanufacturerspublisheddatawhichissomewhatquestionable.Indeed,accuratereliabilitydataoftherectifier,converter,orinverterarehelpfultodeterminethetotalPCSreliabilityhowever,thecalculatedreliabilitycouldbeuncertainonceapproachingtoreliabilitycalculationusingSmallwindturbinesSwitchinglossesReliabilityMeantimebetweenfailures1.IntroductionSmallwindenergyconversionsystemsrapidlyalongwiththelargeWECSforeitherongridoroffgridapplications.complexsystemscomprisingmechanicalandgearboxandelectricalsubsystemsfier,andcontrolandloads.Failurescausesubstantialfinancialloss.Theproblem03062619/seefrontmatterC2112009ElsevierLtd.Alldoi10.1016/j.apenergy.2009.01.009sionsystems.C2112009ElsevierLtd.Allrightsreserved.WECSshaveevolvedofelectricityinareconsideredasrotor,hub,erter,rectiofthesubsystemscanbecomesmoresevereogies.However,recentresearchintermittentlyendeavorstodeterminethereliabilityandadvancementoftheinverterratherthanthePCS2–4.Mostofthereliabilitycalculationsarebasedontheaccessibledataprovidedbythemilitaryhandbookforreliabilitypredictionofelectronicequipmentwhichiscriticizedforbeingobsoleteandpessimistic5,6.AcomparativereliabilityanalysisofdifferentconvertersystemshasbeencarriedoutbasedonthemilitaryhandbookbyAtenetal.6however,theabsenceofenvironmentalandcurrentstressfactorscanposegrimconstraintsonthePowerelectronicsGridtieinverterthesystemreliability,whilethedc–dcconverterhastheleastsignificanteffect.ThereliabilityanalysisdemonstratesthatapermanentmagnetgeneratorbasedwindenergyconversionsystemisnotthebestReliabilityanalysisofgridconnectedsmallMd.Arifujjaman,M.T.Iqbal,J.E.QuaicoeFacultyofEngineeringandAppliedScience,MemorialUniversityofNewfoundland,St.Johns,articleinfoArticlehistoryReceived30June2008Receivedinrevisedform13November2008Accepted10January2009Availableonline11February2009KeywordsRenewableenergyWindenergyabstractGridconnectionofsmallpermanentditioningsystemcomprisingsentsareliabilityanalysissystemofsuchgridconnectioncasescenarioofmaximumabilityofthepowerconditioning84ofinitialvaluewithincomponentwithinthepowerAppliedjournalhomepagewww.elsevirightsreserved.windturbinepowerelectronicsNL,CanadaA1B3X5magnetgeneratorPMGbasedwindturbinesrequiresapowerconbridgerectifier,adc–dcconverterandagridtieinverter.Thisworkpreanidentificationoftheleastreliablecomponentofthepowerconditioningarrangements.Reliabilityoftheconfigurationisanalyzedfortheworstlossesataparticularwindspeed.TheanalysisrevealsthattherelisystemofsuchPMGbasedwindturbinesisfairlylowanditreducestoyear.TheinvestigationisfurtherenhancedbyidentifyingtheleastreliablesystemandfoundthattheinverterhasthedominanteffectonatScienceDirectEnergyer.com/locate/apenergyofagridconnectedsmallwindturbineisessentialinordertooptimizethesystemperformancesaswellassystemcost11.Onthestrengthoftheaboveanalysis,thispaperpresentsacomponentletooptimizedAC–DC–AClink.ThischangehasledtolessharmonicinjectiontothegridandhasbecomepossibleduetolowcostdigitalsignalprocessorsandnewpowerdevicessuchasIGBTsandMOSNomenclaturedfurlinganglehanglebetweenthegridvoltageandcurrentkBbasefailurerateRJAthermalresistancefromjunctiontoambientddutycycleoftheboostconverterESREONEOFFratedswitching,onstateandoffstatelossenergy,respectivelyfWTfSWfrequencyofthewindturbinerotorandswitchingfrequency,respectivelyIdIoIomdiodecurrent,gridcurrent,andmaximumamplitudeofthegridcurrent,respectivelyIrefdIdc1referenceandactualcommutationcurrent,respectivelyMmodulationindexoftheinverterrdrceonstateresistanceofthediodeandIGBT,respectivelyTATJambientandjunctiontemperatureforthesemiconductordeviceVf0Vce0diodeandIGBTonstatevoltagedrops,respectivelyVrefdVrefIGBTreferencecommutationvoltageofthediodeandIGBT,respectivelyVdc1Vdc2actualcommutationvoltageoftherectifier,boostconverter,andinverter,respectively1618Md.Arifujjamanetal./AppliedEnergy8620091617–1623velreliabilitycalculationbyconsideringtemperatureasacovariateasusuallyusedinhighlyacceleratedlifetimetestingHALTprocedure12toachieveasubstantialgainonthereliabilitypredictionofaPCS.Achangeinoperatingpointisalsoinvestigated,thusaclearunderstandingofthereliabilityofthesystemisaccomplished.ThemeantimebetweenfailuresofthePCSisquantified,whichcanbeconsideredthemostwidelyusedparameterinreliabilitystudies5.TheleastreliablecomponentofthePCSisalsoidentifiedinordertooptimizethedesignconsiderationofthepowerelectronicinterfaceofagridconnectedsmallwindturbinepriortoinstallation.ThepaperisorganizedasfollowsThePCSrequiredforthegridconnectionofaPMGbasedsmallwindturbineSWTisdescribedinSection2.ThisisfollowedbytheidentificationofthemostfrequentfailuresubassemblyofaSWTfrompublisheddatainSection3.Section4presentsthemathematicalanalysisforconversionlossescalculationsfollowedbythereliabilityanalysisofthepowerelectronics.Finally,theresultsofthestudyaredescribedinSection5,andtheimportantfindingoftheinvestigationishighlightedintheconclusions.2.GridconnectionofsmallwindturbineThepowerelectronicsforgridconnectionofsmallwindturbinesSWTshaschangedovertheyearsfromconvertersbasedonSCRsFig.1.Gridconnected,PMGbasedFETs.Thedesignconceptofsmallwindturbinehasprogressedfrominductiongeneratorbasedfixedspeed,flapping/passivepitchingcontrolleddrivetrainwithgearboxtoPMGbasedvariablespeed,furling/softstallcontrolledsystemswithorwithoutgearbox.Fig.1showsthewidelyusedconfigurationofasmallgridconnectedPMGbasedwindturbinesystem.ThisarrangementemploysaPCSwhichincludesa3phasebridgerectifier,aboostconverterandagridconnectedinverter.Theboostconverterbooststhevoltageofthedclinkasrequiredbytheinverter.Theboostconverterorinverteriscontrolledsoastoensureoptimumpowerextraction,highoverallconversionefficiencyandvariablespeedoperation.Adrawbackofthisconfigurationistheuseofaninverterforgridconnection.TheinverterusedbythewindturbineindustryisprimarilydesignedforPVapplications13.Reliabilityofsuchgridconnectedinvertersisambiguous13andseveralkeyaspectstoincreasethereliabilityofsuchinvertershavebeenidentifiedbypreviousresearchers4,12,14.Thedominantfactorthatcontributeslowtechnicalreliabilityistheheatgenerationcausedbythepowerlosseswhenthecurrentflowsthroughthesemiconductorswitches2,12,15.Areductioninheatgenerationcansignificantlyincreasethereliability.Inaddition,fansinsidetheinverterhavealimitedlifetimeanddeservespecialattention12.Nevertheless,thereareotheraspectse.g.humidity,modularity,andpackagingthatalsorequirespecialattentionbeyondthetechnicalimprovementandarenotapartofthispresentstudy.smallwindturbinesystem.3.FailuremodesofsmallwindturbinesystemsTheneedforlongtermfielddataisofgreatimportancetotheevaluationoftechnicalandeconomicalperformances.Longtermfailureandreliabilitydataforwindturbinesubsystemsarereadilyavailablebecauseofthesignificantandgrowingnumberofwindturbinesofvariousage,typeandlocationinexistenceacrosstheworld.ThisinformationfacilitatestheidentificationofthemostprobablefailuresubsystemsinWECS,andallowsoptimizationofthedesignfeaturesaswellassystemconfiguration.AreviewhasbeenconductedforthefailuredistributionofSWTsubsystems.DatapublishedbyTheScientificMonitoringandEvaluationProgrammeWMEPinGermany16,Elsfork,Sweden17,andLandwirtschaftskammer,SchleswingHolstein,GermanyLWK18arepresentedinFig.2alongwiththelargewindturbinedataprovidedbyDOWECprojectinNetherland19.Inthereview,mechanicalMd.Arifujjamanetal./AppliedEnergysubsystemsconsistofdrivetrain,gears,mechanicalbrakes,hydraulics,yawsystemhubs,andblade/pitchwhile,thegenerator,sensors,electricsystem,andcontrolsystemcomprisetheelectricalsubsystem.ThedistributionofthenumberoffailuredepictedinFig.2showsthatthesumofthefailureratesoftheelectricalrelatedsubsystemsishigherincontrasttothemechanicalsubsystems.Acompletelyreverseportraitexistsforlargewindturbineswherethefailuremodeisprincipallydominatedbythemechanicalsubsystems.Indeed,theelectricandcontrolsystemcomposedofpowerelectroniccomponentsisanintegralpartofanyPCSwhichnotonlydictatestheperformancebutalsobearamajorfractionoftheoverallcostforasmallWECS.Asawhole,inordertoensurehighreliability,attentionshouldbefocusedonsmallWECSwithstraightforwardbutreliablePCSdesignthatensureeasymaintenanceandrepairaswellaslesscomplexityinthecontrolarchitectureforanoptimumlife.4.MathematicalanalysisAmathematicalanalysisofthepowerlossesinthepowerelectronicscomponents,i.e.,semiconductorsdiodes/IGBTsisrequiredinordertocompleteareliabilityanalysisoftheconfiguration.Thelossesforthepowerconditioningsystemsarestronglydependentonthevoltageandcurrentwaveforms.Simplifiedanalyticalderivationofvoltageandcurrentequationsassociatedwiththeindividualsemiconductorcomponentsarederivedtodeterminethelosses.Thelosscalculationpresentedinthisinvestigationfocusonthelossesgeneratedduringtheconductionandswitchingstatesofthesemiconductors.Afterwards,themathematicalanalysisforreliabilityofthesystemispresented.Fig.2.Distributionofthenumberoffailuresofsmallwindturbinesubsystems.4.1.LossanalysisforaPMGbasedSWTForthe3phasediodebridgerectifier,thelossesarecalculatedforasinglediodefromtheknownvoltageandcurrentequations.Itisassumedthatthecurrentandvoltageinthe3phasediodebridgerectifierareequallydistributedinthediodes.Knowingthevoltageandcurrentforonediode,thelossescanbeobtainedforallthediodesinthebridgerectifier.Theconductionlosses,PDBcddforthediodeisexpressedasPDBcdd?Vf0Ide1TUndertheassumptionofalinearlossmodelforthediodes,theswitchinglossineachdiodeisgivenby20PDBswd?fWTESRC1Vdc1VrefdC1Idc1Irefde2TThetotallossesofthe3phasediodebridgerectifier,PDBtdforall6diodesisgivenbyPDBtd?6PDBcddt6PDBswd?PDBcdtdtPDBswtDBe3TTheconductionandswitchinglossoftheBoostConverterBCiscalculatedbyassuminganidealinductorLDattheboostconverterinput.Foraboostconfiguration,theIGBTisturnedonforthedurationdwhilethediodeDconductsfortheduration1C0d.TheconductioncurrentoftheIGBTistheinputcurrentIdc1whiletheinverterinputcurrentIdc2isgivenbyIdc2?Idc1e1C0dTe4TTheconductionlossforthediodeandIGBTcanbeobtainedbymultiplyingtheironstatevoltageandcurrentwiththerespectivedutycycleandisgivenby21PBCcdd?Idc1eVf0trdIdc1TC1e1C0dTe5TPBCcdIGBT?Idc1eVce0trceIdc1TC1de6TThecommutationvoltageandcurrentfortheboostconverteristheDClinkvoltage,Vdc2andinputcurrenttotheconverter,Idc1.Theswitchinglossesforaspecificswitchingfrequency,fSWofthediodeandIGBTintheBCaregivenby21PBCswd?fswESRC1Vdc2VrefdIdc1Irefde7TPBCswIGBT?fsweEONtEOFFTC1Vdc2VrefIGBTC1Idc1IrefIGBTe8TThesumof5–8givesthelossesoftheBCasPBCtedtIGBTT?PBCcddtPBCswdC16C17tPBCcdIGBTtPBCswIGBTC16C17e9TMostoftheSWTsystemsintegrateasinglephaseinverterforindustrialaswellasresidentialapplication.Withtheexclusionofsnubbercircuit,theinverterconsistsoffourswitchesandfourantiparalleldiodesaspresentedinFig.1.TheconductionlossesofadiodeandIGBTfortheinvertercanbeexpressedas22,PINVcd1d?18C0M3pcoshC18C19rdI2omt12tM8coshC18C19Vf0Iome10TPINVcd1IGBT?18tM3pcoshC18C19rceI2omt12tM8coshC18C19Vce0Iome11TAnapproximatedsolutionforthediodeandIGBTswitchinglossesatanoutputcurrentioisgivenby21PINVsw1IGBT?1pfsw?EONtEOFFC138Vdc2VrefIGBTIoIrefIGBTe12T8620091617–16231619PINVsw1d?1pfswESRVdc2VrefdIoIrefde13T
编号:201409082012154786    大?。?span class="font-tahoma">522.83KB    格式:PDF    上传时间:2017-06-15
  
50
金币
关 键 词:
reliability analysis of grid connected small wind turbine power electronics
  毕设资料网所有阳光彩票均是用户自行上传分享,未经上传用户书面授权,请勿作他用。
0条评论

还可以输入200字符

暂无评论,赶快抢占沙发吧。

关于本文
本文标题:外文翻译--小型网络互联风力发电机功率器件可靠性分析(英文)
链接地址:http://www.luanucci.com/p-134786.html

当前阳光彩票信息

4.0
 
(2人评价)
浏览:276次
泛舟上传于2017-06-15

相关阳光彩票

  • 2006年财务规划外文翻译--性别对个人财务规划过程的影响(英文)2006年财务规划外文翻译--性别对个人财务规划过程的影响(英文)
  • 2013年酒后驾驶外文翻译--影响酒后驾驶和非酒后驾驶车祸严重程度的因素研究(英文)2013年酒后驾驶外文翻译--影响酒后驾驶和非酒后驾驶车祸严重程度的因素研究(英文)
  • 2015年消费者权利外文翻译--约旦消费者对消费者权利的看法(英文)2015年消费者权利外文翻译--约旦消费者对消费者权利的看法(英文)
  • 2011年外文翻译--通过共焦反射图像检测系统来测定血糖水平(英文)2011年外文翻译--通过共焦反射图像检测系统来测定血糖水平(英文)
  • 2014年品牌资产外文翻译--消费者参与品牌资产创造(英文)2014年品牌资产外文翻译--消费者参与品牌资产创造(英文)
  • 2007年外文翻译--消费信贷、家庭财务管理和可持续消费(英文)2007年外文翻译--消费信贷、家庭财务管理和可持续消费(英文)
  • 2012年外文翻译--亚洲流行文化的美国化?(英文)2012年外文翻译--亚洲流行文化的美国化?(英文)
  • 2016年酒驾外文翻译--西班牙加泰罗尼亚地区饮酒模式和酒后驾车行为的比较研究(英文)2016年酒驾外文翻译--西班牙加泰罗尼亚地区饮酒模式和酒后驾车行为的比较研究(英文)
  • 2015年转基因食品外文翻译--消费者对转基因食品不了解什么,以及这如何影响人们的信仰(英文)2015年转基因食品外文翻译--消费者对转基因食品不了解什么,以及这如何影响人们的信仰(英文)
  • 2009年创新教学外文翻译--学生和教师对创新教学的认识(英文)2009年创新教学外文翻译--学生和教师对创新教学的认识(英文)
  • 2012年服装零售外文翻译--新经济下的服装零售--中小企业案例(英文)2012年服装零售外文翻译--新经济下的服装零售--中小企业案例(英文)
  • 2016年停车位外文翻译--优化住宅区停车位的使用(英文)2016年停车位外文翻译--优化住宅区停车位的使用(英文)
  • 2018年绿色物流外文翻译--食品配送中的绿色物流——一个案例研究(英文)2018年绿色物流外文翻译--食品配送中的绿色物流——一个案例研究(英文)
  • 2010年个人理财外文翻译--研究生个人理财态度的初步研究(英文)2010年个人理财外文翻译--研究生个人理财态度的初步研究(英文)
  • 2013年外文翻译--组织气氛对员工工作热情和组织承诺的影响(英文)2013年外文翻译--组织气氛对员工工作热情和组织承诺的影响(英文)
  • 2010年组织承诺外文翻译--学习型组织与组织承诺关系的实证分析(英文)2010年组织承诺外文翻译--学习型组织与组织承诺关系的实证分析(英文)
  • 2016年外文翻译--语言与跨国并购--一项探索性研究(英文)2016年外文翻译--语言与跨国并购--一项探索性研究(英文)
  • 2013年管理层收购外文翻译--管理层收购中的私募股权和企业家管理(英文)2013年管理层收购外文翻译--管理层收购中的私募股权和企业家管理(英文)
  • 2013年管理层收购外文翻译--管理层收购中的私募股权和企业家管理(节?。? class= 2014年CRM外文翻译--保险业的客户关系管理(英文)2014年CRM外文翻译--保险业的客户关系管理(英文)
  • 2017年智能家居外文翻译--对智能家居概念和居住者与建筑控制互动的见解(英文)2017年智能家居外文翻译--对智能家居概念和居住者与建筑控制互动的见解(英文)
  • 相关搜索

    精品推荐

    关于我们 - 网站声明 - 网站地图 - 阳光彩票地图 - 友情链接 - 网站客服客服 - 联系我们
    copyright@ 2008-2020 阳光彩票平台版权所有
    本站所有资料均属于原创者所有,仅提供参考和学习交流之用,请勿用做其他用途,转载必究!如有侵犯您的权利请联系本站,一经查实我们会立即删除相关内容!
    举报电话:13982715227 举报邮箱:540560583@qq.com 网站备案号: 蜀ICP备14003304号-1
    阳光彩票平台

    川公网安备 51050302000003号