2024液壓技術在風電機組變槳和偏航上的應用

2024.9.1workingprincipleandsystemcompositionofelectric利用變槳距電機來完成調整葉片槳距角的裝置。主要包括Thisdeviceusesapitchmotortoadjustthebladepitchmainlyincludingpitchcontroller,pitchservodriveorfrequencyconverter,backuppowersupply,motor,reducerandother

PitchPitchsysteminworkingprincipleandsystemcompositionofhydraulicItuseshydrauliccylindertocompletetheadjustmentofbladepitchangle,includingpitchcontroller,hydraulicpowerunit,valvemanifold,accumulator,hydrauliccylinder,etc.Yawsysteminwindworkingprincipleandsystemcompositionofelectric利用偏航電機來完成調整偏航角度的裝置。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電缸：ElectricSimplearragement,environmentallyfriendly,highprecisionandefficiency,lowmaintenancecost. Limitedloadcapacityandoverloadcapacity,poorimpactresistance(rigidity).Strongoverloadcapacity,goodimpactresistance(flexible),suitableforlargeloads.液壓變槳系統(tǒng)HydraulicPitchsystemcompositionandoperatingprincipleofhydraulicThehydraulicpitchsystemisdrivenbythehydraulicpowerunitintheNacelle,andtransmitsthepowertothepitchmanifoldblock,accumulatorsandpitchcylinderthroughtherotationunions,andwiththepitchcontrollogictorealizethepreciseanglecontroloftheblades,sothattheturbinecanobtaintheefficientoperation. hydraulicpower rotation pitchmanifold pitch液壓變槳系統(tǒng)－優(yōu)勢Hydraulicpitchsystems針對海上風電機組，液壓變槳系統(tǒng)有以下優(yōu)勢：Advantagesofhydraulicpitchsystemforoffshorewind液壓元件簡單可靠，緊急順槳不依賴電控系統(tǒng)，而是靠蓄能器推動液壓缸進行順槳，出力大、響應特性更好。可快速且安全地執(zhí)行緊急停機。蓄能器安全、可靠性能以及壽命都比蓄電池或超級電容要好的多。Thehydrauliccomponentsaresimpleandreliable,andtheemergencyfeatheringisnotdependentontheelectroniccontrolsystem,butontheaccumulatortopushthehydrauliccylinder,thiswayhasalargeoutputandbetterresponsecharacteristics.Emergencyshutdownscanbeperformedquicklyandsafely.Thesafety,reliabilityandlifeofaccumulatorsaremuchbetterthanthatofbatteriesorultracapacitors.液壓變槳是依靠液壓腔體推動葉片動作進行變槳，利用液壓阻尼特性Hydraulicpitchdependsonhydrauliccavitytopushthebladeactionforpitchcontrol,andabsorbsthetorqueimpactwhenadjustingthepitchwithhydraulicdampingcharacteristics,whichhasagooddampingeffectandcaneffectivelyreducetheloadofthewholemachine.Itreliesonhydrauliccylinderdirectlyconnectedtobladeforpitchcontrol,withouttheimpactandwearofgeartransmission,reducingthecostofgearringdamage,operationandmaintenance,reducingthepitchanglepositioningerrorcausedbythebacklashoftheelectricvariablepitchgearbox.

液壓變槳系統(tǒng)－優(yōu)勢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.噪音和振動的挑戰(zhàn)。NoiseandvibrationThefrictionbetweenthefrictionplateandthegearringoftheslidingyawunitislarge,butitshouldnotbereducedinordertoprovideproperContradictionbetweentheskidofthebrakecaliperorcaliperandthelockingofthemotor.Whenthebrakesystemisslipping,thewindwheelisfixedbythebrakeholdingforceofthemotor.Unevenforceonthedrivingteethwillincreasetheriskofbrokenteeth.AdvantagesofwindpowerhydraulicyawdriveByconnectingthehydraulicmotorinparallelwithhosesandpipescanavoidtheproblemofpartialloadthatmayoccurinthetransmissionandincreasethelifetimeoftheyawsystem.Thesystemcanabsorbexternalshockandvibrationtoacertainextent,andprotectthegearboxfromimpactdamage.3、阻尼穩(wěn)定，效率升級：StabledampingandhighworkingThebalancevalveprovidesstableandcontrollabledampingeffectsduringyawingandwithoutrelyingonfrictionpadstogeneratedamping.Byreducingthefrictioncoefficient,thedrivingefficiencycanbegreatlyimprovedAdvantagesofwindpowerhydraulicyawdriveWiththereductionoffrictioncoefficient,noisecanbesignificantlyWhenthewi