Vertical Axis Wind Turbine development垂直轴风力发电机的发展

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1、1VerticalAxisWindTurbinedevelopmentGuilhermeSilvaAbstract:Windpoweris,nowadays,themostpromisingVInducedvelocity;iandsuitablerenewableenergyforrapidandcost-effectiveVBlade’sflowvelocity;implementation.Horizontalaxiswindturbineshavebeenpgreatlydevelopedbutsomeothertechnologies,suchastheVNominalv

2、elocity;ratedverticalaxiswindturbinesarestillinaninitialdevelopmentphase.ThedisparityinthedevelopmentoftheseVWindvelocity;technologiesremainsunexplained.Nevertheless,thelittledevelopmentmadeinverticalaxiswindturbinesseemstoAngleofattack;emphasizethistechnologyasbeingoneofgreatpotential.Angu

3、larposition;ThispresentworkaimedtocreateananalysisofthisTipspeedratio;technology.Modelsweredeveloped,andawiderangeofDensity;CFDresultswereobtainedusingthekwSSTmodel.IntheSolidity;end,asmallwindturbineintentionallybuiltforthisworkAngularvelocity;wastested.Kinematicviscosity.Keywords:VAWTDa

4、rrieusGiromillH-rotorVerticalaxiswindturbineWindpowerKwmodel.I.INTRODUCTIONABBREVIATIONSANDACRONYMSWindenergyistheenergyfromthewind.ThisformofAArea;energycanbeconvertedtoothermoreusefulformssuchasARAspectratio;electricity,throughtheuseofwindturbines.cBladechord;Windpoweristhepower,inW,givenbyt

5、hekinetic[3]CDragcoefficient;energyofwindinagivenarea,perunitoftime:DCLLiftcoefficient;13PAV,(1)windCPPowercoefficient;2COECostofenergy;beingisthedensityofairinkg/m3,AtheareaDDrag;2consideredinmandVthewindvelocityinm/s.EUEuropeanUnion;fFrequency;Worldwide,theuseofwindpowerhasbeenrising,ar

6、ound25%peryear,sincetheearly1990s.ThisincreasehasbeenFForce;strongerinEurope.Inthefuture,thistrendisexpectedtoFLateralforce;[5]ncontinuemainlythroughtheuseofoffshoreareas.FtTangentialforce;Theefficiencyofwindturbinesisnormallycharacterized[3]HAWTHorizontalaxiswindturbine;bythepowercoefficient:

7、IMomentofinertia;PPturbineturbineC.(2)LLift;P1Pwind3LCLifetimecosts;AV2LEOLifetimeenergyoutput;MWindturbinescanbedividedintotwotypes.IndragTorque;nturbines,movementisproducedbytheairdragwhileinliftNumberofblades;turbinesmovementispr