基于新型boostpfc和flyback結(jié)合軟開關(guān)電路的研究

1、Y，“i86ZZl分類號Z型!《UOC——密級—紐盈學號!Q煎】2∞234000201085睜聾角孑蟹歹久旁SOUTHCHINAUNIVERSITYOFTECHNOLOGY碩士學位論文一墨王塹型里9竺壁里匹塑望y堡壘然笪金軟開關(guān)電路的研究——學位申請人導師姓名及職稱專業(yè)名稱研究方向所在學院論文提交日期鄧衍平謝運祥教授電力電子與電力傳動變流技術(shù)及其應(yīng)用電力學院2005年5月華南理工大學碩士學位論文AbstractAsthedevelopi

2、ngoftheSOCietyandeconomy，peoplearewiilingtoobtainbetterelectronicequipmentsThesoftswitchingtechnique，whichcanimprovetheefficiency，reducethevolumeandweigh，reducetheE1ectromagneticInterference(EMI)Andthepowerfactotcorrecti

3、on(PFC)techniquewhichcanimprovethequalityofelectricity，1imitingtheharmonicspollutionHavebothbecomethemainfieldsandhotareasoftheelectronicpowerstudynowadaysTomeetthechallengesoftheever—presentrequirement(especiallYintheco

4、mmunicationpowersystem)todecreasethesizoofpowerconversionequipments，powersuppliesoperatingathigherswitchingfrequenciesandutilizingadvancedpackagingandthermalmanagementtechniqueshavebeenintroducedSpecifically，inrecentyear

5、s，signifleanteffortshavebeenmadeteduceswitchinglossesofcontinuousconductionmode(CCM)boosttopoiogyforimplementationofafrontendwithPFCovertherangefrommediumtohighpowerSofar，anumberofsoft—switchingboostPFCrectifiersandtheir

6、variationshavebeenpropoSedThenanewsoft—switchingboostPFCrectifierwithanintegratedflybackconverterisstudiedindetailjnthispaperThistopoiogyismadeupofaboostPFCrectIfierandaflybackconverter(asastandbypowersupplY)，1inkeduptog

7、etherbyanauxi1iarysoft—switchingbranchTheboostPFCreetifierisworkingoncurrentcontinuousmode(CCM)，whiletheflybackoncurrentdiscontinuousmode(DCM)A1ltheswitchescanrealizesoftswitchingTheboostswitchandtheflybackswitchcanhetur

8、nedonzerovoltageTheauxiliaryswitchisturHedonaHdoffzerocurrentThediodeoftheboostPFCrectifieristurnedoffsoftlYwIththedi／西ratecontroedWhatismore，theconditionsforsoft—switchingandthecomparedresultsarebothdiscussedindetailThe