2024液压技术在风电机组变桨和偏航上的应用

2024.9.1workingprincipleandsystemcompositionofelectric利用变桨距电机来完成调整叶片桨距角的装置。主要包括Thisdeviceusesapitchmotortoadjustthebladepitchmainlyincludingpitchcontroller,pitchservodriveorfrequencyconverter,backuppowersupply,motor,reducerandother

PitchPitchsysteminworkingprincipleandsystemcompositionofhydraulicItuseshydrauliccylindertocompletetheadjustmentofbladepitchangle,includingpitchcontroller,hydraulicpowerunit,valvemanifold,accumulator,hydrauliccylinder,etc.Yawsysteminwindworkingprincipleandsystemcompositionofelectric利用偏航电机来完成调整偏航角度的装置。主要Thissystemusesyawmotortoadjustyawangle,includingmaincontrolunit,yawmotor,reducerandsoon.

workingprincipleandsystemcompositionofhydraulicItuseshydraulicmotortoadjustyawangle,includingmaincontrolunit,hydraulicunit,controlvalvemanifold,hydraulicmotor,reducerandothercomponents.AdvantageofHydraulicHydraulicsystemsarewidelyusedinengineeringmachinery,constructionmachinery,liftingmachinery,marineengineering,aviation,robot,etc.AdvantageofHydraulicDistinctiveHighreliability,compactstructure,longoperatingHighpowerOverloadprotection,impactAdvantageofHydraulicTherealizationofelectrictransmissionandhydraulicRotationMotion:hydraulicmotorVSfrequencyThepowerdensityofhydraulicmotorsistentimeshigherthanelectricThehydraulicsystemstilloccupiesanimportantpositionintheindustrythatrequireslargethrustandhighloadcapacity,anditisdifficulttobecompletelyreplacedbythepowersystem.

RectilinearMotion:hydrauliccylinderVSelectric电缸：ElectricSimplearragement,environmentallyfriendly,highprecisionandefficiency,lowmaintenancecost. Limitedloadcapacityandoverloadcapacity,poorimpactresistance(rigidity).Strongoverloadcapacity,goodimpactresistance(flexible),suitableforlargeloads.液压变桨系统HydraulicPitchsystemcompositionandoperatingprincipleofhydraulicThehydraulicpitchsystemisdrivenbythehydraulicpowerunitintheNacelle,andtransmitsthepowertothepitchmanifoldblock,accumulatorsandpitchcylinderthroughtherotationunions,andwiththepitchcontrollogictorealizethepreciseanglecontroloftheblades,sothattheturbinecanobtaintheefficientoperation. hydraulicpower rotation pitchmanifold pitch液压变桨系统－优势Hydraulicpitchsystems针对海上风电机组，液压变桨系统有以下优势：Advantagesofhydraulicpitchsystemforoffshorewind液压元件简单可靠，紧急顺桨不依赖电控系统，而是靠蓄能器推动液压缸进行顺桨，出力大、响应特性更好。可快速且安全地执行紧急停机。蓄能器安全、可靠性能以及寿命都比蓄电池或超级电容要好的多。Thehydrauliccomponentsaresimpleandreliable,andtheemergencyfeatheringisnotdependentontheelectroniccontrolsystem,butontheaccumulatortopushthehydrauliccylinder,thiswayhasalargeoutputandbetterresponsecharacteristics.Emergencyshutdownscanbeperformedquicklyandsafely.Thesafety,reliabilityandlifeofaccumulatorsaremuchbetterthanthatofbatteriesorultracapacitors.液压变桨是依靠液压腔体推动叶片动作进行变桨，利用液压阻尼特性Hydraulicpitchdependsonhydrauliccavitytopushthebladeactionforpitchcontrol,andabsorbsthetorqueimpactwhenadjustingthepitchwithhydraulicdampingcharacteristics,whichhasagooddampingeffectandcaneffectivelyreducetheloadofthewholemachine.Itreliesonhydrauliccylinderdirectlyconnectedtobladeforpitchcontrol,withouttheimpactandwearofgeartransmission,reducingthecostofgearringdamage,operationandmaintenance,reducingthepitchanglepositioningerrorcausedbythebacklashoftheelectricvariablepitchgearbox.

液压变桨系统－优势HydraulicpitchsystemsUsinghydraulicpitchsystemcansignificantlyimprovethestabilityofthegridandtheoverallqualityofEnergyproduction,whicheffectivelyreducethepotentialimpactonthepowergrid.Therearesomeexcellentcases,suchasVestas,Gamesa,ShanghaiElectricFujianXinghuaBay,GoldwindTechnologyDafengandGuangdongXuwenproject,whichhaveledtoanewheightoftyphoonresistanceandincreasedEnergyproduction.Highintegration,modularThemotor,pump,controlvalvemanifoldandpitchcylinderareintegratedtoachievehighertransferefficiencyandlowerenergyloss,andachievebetterenergysavingeffectwhilerealizingaccurateadjustmentofbladeAngle.Atthesametime,thenumberofhigh-pressurepipesandpipefittingsisreduced,greatlyimprovingtheoverallperformanceandreliabilityofthesystem.Whenamodulefails,itcanbequicklylocatedandreplacedwithoutextensivedisassemblyandmaintenanceoftheentiresystem,whichgreatlyshortensthemaintenancetimeandimprovesthereliabilityandmaintainabilityofthesystem.PitchSystem-FutureHydraulicPitchSimplifysystemcompositionandimproveenergyconversionThetraditionalrotationunionsdesigniscancelled,andthehydraulicpumpstation,pitchmanifoldblock,accumulator,cylinderandcontrolsystemareplacedinsidethehub.ThenumberofdrivereducerincreasesandthesystemefficiencyWindturbinesexpansioncausesyawtorquetoincreaseanddriveunitstoincrease.Gearforceisuneven,thedeclineintransmissionefficiencywillbemoreobvious.噪音和振动的挑战。NoiseandvibrationThefrictionbetweenthefrictionplateandthegearringoftheslidingyawunitislarge,butitshouldnotbereducedinordertoprovideproperContradictionbetweentheskidofthebrakecaliperorcaliperandthelockingofthemotor.Whenthebrakesystemisslipping,thewindwheelisfixedbythebrakeholdingforceofthemotor.Unevenforceonthedrivingteethwillincreasetheriskofbrokenteeth.AdvantagesofwindpowerhydraulicyawdriveByconnectingthehydraulicmotorinparallelwithhosesandpipescanavoidtheproblemofpartialloadthatmayoccurinthetransmissionandincreasethelifetimeoftheyawsystem.Thesystemcanabsorbexternalshockandvibrationtoacertainextent,andprotectthegearboxfromimpactdamage.3、阻尼稳定，效率升级：StabledampingandhighworkingThebalancevalveprovidesstableandcontrollabledampingeffectsduringyawingandwithoutrelyingonfrictionpadstogeneratedamping.Byreducingthefrictioncoefficient,thedrivingefficiencycanbegreatlyimprovedAdvantagesofwindpowerhydraulicyawdriveWiththereductionoffrictioncoefficient,noisecanbesignificantlyWhenthewi