2024液壓技術(shù)在風(fēng)電機(jī)組變槳和偏航上的應(yīng)用

2024.9.1workingprincipleandsystemcompositionofelectric利用變槳距電機(jī)來完成調(diào)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(jī)來完成調(diào)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(shì)Hydraulicpitchsystems針對(duì)海上風(fēng)電機(jī)組，液壓變槳系統(tǒng)有以下優(yōu)勢(shì)：Advantagesofhydraulicpitchsystemforoffshorewind液壓元件簡(jiǎn)單可靠，緊急順槳不依賴電控系統(tǒng)，而是靠蓄能器推動(dòng)液壓缸進(jìn)行順槳，出力大、響應(yīng)特性更好?？煽焖偾野踩貓?zhí)行緊急停機(jī)。蓄能器安全、可靠性能以及壽命都比蓄電池或超級(jí)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(dòng)葉片動(dòng)作進(jìn)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(shì)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(dòng)的挑戰(zhàn)。NoiseandvibrationThefrictionbetweenthefrictionplateandthegearringoftheslidingyawunitislarge,butitshouldnotbereducedinordertoprovideproperContradictionbetweentheskidofthebrakecaliperorcaliperandthelockingofthemotor.Whenthebrakesystemisslipping,thewindwheelisfixedbythebrakeholdingforceofthemotor.Unevenforceonthedrivingteethwillincreasetheriskofbrokenteeth.AdvantagesofwindpowerhydraulicyawdriveByconnectingthehydraulicmotorinparallelwithhosesandpipescanavoidtheproblemofpartialloadthatmayoccurinthetransmissionandincreasethelifetimeoftheyawsystem.Thesystemcanabsorbexternalshockandvibrationtoacertainextent,andprotectthegearboxfromimpactdamage.3、阻尼穩(wěn)定，效率升級(jí)：StabledampingandhighworkingThebalancevalveprovidesstableandcontrollabledampingeffectsduringyawingandwithoutrelyingonfrictionpadstogeneratedamping.Byreducingthefrictioncoefficient,thedrivingefficiencycanbegreatlyimprovedAdvantagesofwindpowerhydraulicyawdriveWiththereductionoffrictioncoefficient,noisecanbesignificantlyWhenthewi