利用超声波方式实现无线电能传输的可行性的研究-张建华

30220114AdvancedTechnologyofElectricalEngineeringandEnergyVol.30No.2April20112010-03-161986-1969-。210096。、。TM46A1003-3076201102-0066-041“1”。mmIPTmMarinSoljaci2kmSBSPSpace-basedSolarPowerSSPSSatelliteSolarPowerSystem。。20kHz、。。、、。3。220kHzMHz、KW。。。。11Fig.1Wirelesspowertransmissionsystembasedonpiezoelectricmaterials、。267。。。。4。。。2fs。2Fig.2EquivalentcircuitofpiezoelectrictransducerC0R05Cm、Lm、Rm、。、。3。sr。UsUr。3-4001～353Fig.3EquivalentcircuitofWPTbetweentransducersoftransmitterandreceiver。、、、MATLAB、ANSYS、SYSNOISE、、。。-。61γ0.14Np20.04～0.3MRayl3。4。4Fig.4Multi-layermatchZp、ZaZili=123。68307Zjl=n+1Zn－j+1pZj槡an。-、。8。95a。5abFig.5aCircularsteppedbRectanglesteppedradiationplateradiationplate。680%1KW10～40KHz。6abFig.6aradiationdirectionofbradiationdirectionofsteppedplateflatplate5b。2kW。。4。、。-----。Y-4。。-、。k2eff=CmC0+CmCm、C0-。。R0tanδe=1/ωC0R0ω。tanδm=2πfsCmRmfs、Cm、Rm。--。7。ZAZB2697Fig.7Schematicdiagramofacoustictransmissionbetweeninterfacesut=2ZAZA+ZBuiur=ZB－ZAZA+ZBuiuirt。p=ρcuρ、c、u--。-Al=A0×e－aflA0、Allfa。－－75%88Fig.8Distance-efficiencyrelationshipofWPTbyultrasonic。5、。。－。。。、、、。References1WikipediaFoundationInc.WirelessenergytransferOL.http//en.wikipedia.org/wiki/Wireless_energy_transfer.March192009.2AndréKursAristeidisKaralisRobertMoffattetal.Wirelesspowertransferviastronglycoupledmagneticres-onancesJ.Science200731783-86.3ToshihikoIshiyamaYasuyukiKanaiJunichiOhwaki.Impactofawirelesspowertransmissionsystemusinganultrasonicairtransducerforlow-powermobileapplicationsA.IEEESymposiumonUltrasonicsC.2003.1368-1371.4LinShuyu.The-oryanddesignofultrasonictransducersM.BeijingSciencePress2004.5LinShuyu.Studyofvibrationcharacter-isticsandradiatedacousticfieldofair-coupledultrasonictransducerbasedonbendingvibrationJ.AcousticsandElec.Eng.20047531-7.6TEGomez.AcousticimpedancematchingofpiezoelectrictransducerstotheairJ.IEEETrans.onUltrasonicsFerroelectricsandFrequencyControl2004515624-33.7MNJackson.SimulationandcontrolofthicknessmodepiezoelectrictransducersD.GlasgowScotlandUniv.ofStrathclyde1984.8LinZhongmao.PrincipleanddesignofultrasonicamplitudetransformerM.BeijingSciencePress1987.74cont.onp.747430117-22.5JiangWeiWangChengshanYuYixin.AnewmethodtocomputesensitivityofloadingmargintovoltagecollapsewithrespecttoparametersJ.Proc.CSEE200626213-18.6GreeneSDobsonIAlvaradoFL.SensitivityoftransfercapabilitymarginswithafastformulaJ.IEEETrans.onPowerSystems200217134-40.AnoveltransfercapabilityenhancementapproachbasedonoptimallocationofseriescapacitorKANGJian1WANGLei-ming2PANShu-jie21.ShandongElectricPowerEngineeringConsultingInstituteCor.Ltd.Jinan250013China2.StateNuclearElectricPowerPlanningDesign＆ResearchInstituteBeijing100094ChinaAbstractDeterminationoflocationwhereseriescapacitorshouldbeinstalledisimportantforenhancementoftransfercapability.Thestrategyforselectingtheoptimallocationofseriescapacitorisdevelopedinthispaper.Itisknownthattheinfluenceofconstraintssuchasvoltagelimitsbranchpowerlimitsandotherelectricalequipmentslimitsandvoltagecollapselimitsarecriticalfortransfercapability.Consideringsomekindsoflimitstransfercapa-bilityisestimatedbycontinuationpowerflowmethod.Aformulaforthefirstordersensitivityofthetransfercapabil-itywithrespecttotransmissionline’sreactanceisdeducedatthebindinglimit.Thesensitivityformulaisappliedasanindexforselectingtheoptimallocationofseriescapacitor.Theavailableconditionthattheindexusedforse-lectingtheseriescapacitoroptimalplacementisalsopresentedinthispaper.SimulationresultsofIEEE30-bussys-temandIEEE118-bussystemprovethattheproposedmethodiseffectiveandofpracticalvalue.Keywordstransfercapabilityseriescapacitorsensitivityoptimallocation櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆continuationpowerflowmethod69cont.fromp.699Gallego-JuarezJA.Flexuralvibratingfree-edgeplateswithsteppedthicknessforgeneratinghighdirectionalul-trasonicradiationJ.Acoust.Soc.Am1972513953-959.FeasibilityofultrasonicwirelesspowertransmissionZHANGJian-huaHUANGXue-liangZOUYu-weiBAIYangSchoolofElectricalEngineeringSoutheastUniversityNanjing210096ChinaAbstractWirelesspowertransmissionWPThasattractedextensiveattentionfromscholarsathomeandabroadinrecentyearsbutultrasonichasnotyetreceivedsufficientattentionasapowertransmissionmedium.UltrasonicWPThasseveraladvantagessuchasstrongdirectionaltransmissionitsenergyeasilytobefocusedwithfare-noughdistanceandsoon.ThispaperproposedanelectriccircuitmodelofultrasonicWPT.Whenpiezoelectricma-terialsusedasultrasonictransducersweobtainedtheequivalentcircuitdiagramofultrasonicWPTthroughelectro-mechanicalequivalentcircuitdiagramofpiezoelectricmaterials.Andtwotypesofultrasonictransducerswereana-lysedwhichwereapplicabletoultrasonicWPT.AlsotheefficiencyofultrasonicWPTwasestimated.KeywordsultrasonicWPTpiezoelectriceffectultrasonictransducer