基于前置斬波無刷吊扇控制器研究.pdf

1、湖北工業(yè)大學(xué)碩士學(xué)位論文基于前置斬波無刷吊扇控制器研究姓名：胡海申請學(xué)位級別：碩士專業(yè)：電力電子與電力傳動指導(dǎo)教師：李新華20100501湖北工業(yè)大學(xué)碩士學(xué)位論文IIAbstractBecausethefunctionoftraditionalceilingfansissinglethepopularityofhomeairconditionersithavebeguntograduallydisappear.Howeveraspeop

2、leshigherdemsofenergyefficiencyindoairqualitycomftnoiseanintelligentceilingfanisinrapiddevelopment.Ithasdifferentoperationmodeslightingnamentalfeatures.Atpresenthighqualityceilingfansonthemarketarestillusingtraditionalmo

3、tdrivensuchassinglephaseasynchronousmotsinglephasecommutatmotswhichperfmancesindexislowoperatingcostsishigh.Itisdifficulttomeetthecontrolrequirementsofhighqualityceilingfans.SoPermanentmagbrushlessDCmothasreceivedmuchatt

4、entioninthehighqualityceilingfansbecauseofitsgoodcontrolperfmance.AsweknowwhenthespeedofBLDCmotislowthedutyislowthatmakingwindingcurrentisnotcontinuousresultinginmehighderharmoniccomponentsthiswillresultinpolysmoothopera

5、tionofceilingfaninparticularlylargeelectromagicnoiseproblems.Thereasonsofelectromagicnoisearenumerousbutthemotwindingcurrentisdiscontiguouscurrentwithhighfrequencyharmonicshaveasignificanteffect.Tothisenditregulatesbrush

6、lessmot’swindingterminalvoltagebyaddingaBUCKcircuitbetweenthepowersupplyinvertersothattheinverterdon’tneedPWMchopperinacommutationcyclethatisthroughthecontrollersprechoppertoimprovewindingcurrentswavefmsuppresselectromag

7、icnoise.InthispaperthestatustrendsofceilingfansaswellastheouterrotbrushlessmotareintroducedthehardwaresoftwaredesignofprechopperhighqualityceilingfancontrollerbasedonIPMC8051FMCUIPMPS21964aredevelopedpoleslotcombinations

8、auxiliaryslotopeningwhichcontributetothegenerationofelectromagicnoiserippletquearestudiedbasedonthehardwaresoftwareofpreBUCKcircuitcontrollerareestablishedtested.ThetestingresultsshowthatpreBUCKcircuitbrushlessmotcontrol