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(hào)Z型!《UOC——密級(jí)—紐盈學(xué)號(hào)!Q煎】2∞234000201085睜聾角孑蟹歹久旁SOUTHCHINAUNIVERSITYOFTECHNOLOGY碩士學(xué)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(xué)位申請(qǐng)人導(dǎo)師姓名及職稱專業(yè)名稱研究方向所在學(xué)院論文提交日期鄧衍平謝運(yùn)祥教授電力電子與電力傳動(dòng)變流技術(shù)及其應(yīng)用電力學(xué)院2005年5月華南理工大學(xué)碩士學(xué)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