基于降频的无线能量传输系统优化控制.pdf

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1、JournalofSoutheastUniversity牗EnglishEdition牘Vol．２９牞No．３牞pp．２５９２６３Sept．２０１３ISSN１００３—７９８５OptimalcontrolofwirelessenergytransfersystemviadecreasingfrequencyTanlinlinHuangXueliangZhouYalongZhaoJunfeng牗SchoolofElectricalEngineering牞SoutheastUniversity牞Nanjing２１００９６牞China牘Abstract牶Inordertosol

2、vethemultiplepowerextremevalueperiodoftime牞thistechnologyhasbeenusedtostudythepointproblemcausedbysystemfrequencysplittingduringlong-rangeenergytransmission牗Thetransmissiondis-wirelessenergytransmissionatshortdistances牞atransmissiontanceismuchgreaterthanthegeometricdimensionsofmodelofthe

3、systemisestablished．Withthecomprehensivethecoilsize牘牞inwhichcasethecouplingoftransmittingconsiderationoftheresonancefrequency牞loadparametersandandreceivingcoilsisweakened牞andthefrequencysplit-thecouplingbetweencoils牞theinternalfactorsoffrequencytingphenomenonisnotobviousorrarelyoccurs．Fo

4、rthissplittingandboundaryconditionsarediscussed．Theresultsreason牞thisphenomenonhasnotattractedmuchattentionshowthatundertheconditionofthefixedload牞thehigherthebyresearchersanymore．naturalresonancefrequency牞theeasierthefrequencysplitting．Actually牞wirelessenergytransmissiontechnologyhasAst

5、hefrequencysplittingoccurs牞thefrequencyofthe犤２犦beenwidelyusedinvariousfields牞andthetransferdis-maximumpowertransferisnolongerwiththenaturaltancemaybeclosetotheradiusofcoilsorsmallerthanresonancefrequency牞whichcanmakethesystemunstableandtheradiusofcoils．Thecoilsizeandthetransmissiondis-th

6、etransferpowermoredifficulttocontrol．Therefore牞atanceareroughlyofpropinquity．Accordingtorelativedecreasing-frequencymethodisproposedtoavoidthesystemfrequencysplitting．Anddecreasingthesystemresonancetheory牞thesystemwillbeworkinginstrongcouplingre-frequencycanmakethesystemsuccessfullywithd

7、rawthegions牞andthetransmittingandreceivingcoilsarepronefrequencysplittingareaatashort-distancerange．Underthetostrongcoupling牞whichmakesthesystemworkinthefixedloadcondition牞thetransmissionpowerofthesystemcanfrequencysplittingregion．Meanwhile牞theextremetrans-犤３犦beincreasedb