小功率全橋雙向電流源高頻鏈光伏戶用逆變器研究.pdf

1、上海交通大學(xué)博士后學(xué)位論文小功率全橋雙向電流源高頻鏈光伏戶用逆變器研究姓名：項(xiàng)安申請(qǐng)學(xué)位級(jí)別：博士后專(zhuān)業(yè)：電力電子與電力傳動(dòng)指導(dǎo)教師：潘俊民20031201上海交通大學(xué)博十后工作報(bào)告ABSTRACTABSTRACTWiththedevelopmentofeconomy，improvementofpeasantsandherdsmen’Slifeandpopularizationofhouseholdappliance，therequir

2、ementsforphotovoltaiCACpowersourcewillincrease，AsthekeypartsofphotovoltaicACpowersource，therequirementforbetterphotovoltaieinverteralsoincreasegraduallySothefuturemarketofphotovoltaicinverterwithlow—cost，highqualityandhi

3、ghreliabilityisbrightTherearetwotypesphotovoltaicinvertersforfamilyuseatpresentOneisvoltageliftwithlinefrequency(50／60Hertz)FirstitconvertsDCfrombatteryto50／60HzAC，thenitliftsvoltageto220voltACwithlinefrequencytransforme

4、rThedisadvantagesofthistypeinverterareitsbigsizeandpooradaptableabilitytoloadchangeAnotherisforwardmodehighfrequencylinkinverterItusesthree—stageconversion，DC—AC，AC—DC，DC—AC，outputsonephase220voltACThedisadvantagesofthis

5、typeinverterareuseofmorecomponentsandmorecomplexstructurebecauseofitsthree—stageconversionInrecentyears，anewconversiontechniquehasattractedattentionofresearchersSeveraltopologieshavebeenproposedegfullbridgecurrentmodehig

6、h—frequencylinkinverters，pushpullcurrentmodehigh—frequencylinkinvertersCurrentmodehigh—frequencylinkinvertersarebasedonflybackDCDCconverters，ThecircuitworksindiscontinuousorcontinuousmodeofinductorcurrentThecircuittopolo

7、gyofeachworkmodeisflybackDC—DCconverterItownsthefollowingadvantages：simplercircuittopologyfewercomponents，simplercontrolscheme，betterdynamicresponseandhigherefficiencyItisverysuitableforphotovoltaicinverterFirstly，discon

8、tinuouscurrentmodeandcontinuousmodeofflybackconvenerisanalyzedandsimulatedTheresultshow也atthepeakcurrentandFillscurrentofpowerswitchesincontinuouscurrentmodeisreducedsharplycomparedwiththatindiscontinuouscurrentmode，whic

9、hisveryimportantforimprovingtheconverterefficiencyTheresultalsoshowsthattheconvenerwithPIDcompensatorcallachievegooddynamicperformanceBasedonthetheoriesdiscussedabove，a200Wfullbridgecontinuouscurrentmodehighfrequencylink

10、inverterisdesignedPhilipsmicrochipcomputerisusedtoimprovetheperformanceoftheinverterandreducethecost111esimulationandexpefimentresultshowthattheinverterprototypehavetheadvantagesofsimpletopologyhighefficiencyandsuitablef