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dzigbt黺·ģ

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 ܿڲͬڻ·ķֻ迼IGBT ضʱģͿԵЧΪѹƵĵԴͨʱԵЧΪѹƵĵѹԴͼ1ʾնĻ·ΪһIGBT·ģڷٶж̬ܵͨѹΪ0VTβΪ0VT̬ͨѹΪ0
 ն·
 
ͼ1 ն·
 
1. ضģ
       ʼ״̬VT̬ͨVDF2ֹIsVTLs, CsϵĵѹΪ0LsϵIsդضźӳʱVTϵĵԼٶ½0ʱΪ½ʱTf1½ʱ俪ʼʱΪ½ʱo≤c≤Ta
 
 
                        1
ٶVTеĵ½VTβΪ0t=Tf1ʱ*ѹΪ
 
 
                        2
CS ɵԴIS   һֱ䵽 CSϵĵѹVSʱVDF2 ͨISͨVDF2VDS1ͨLsϵĵVDS1ͬʱCSLpl+ Lp2г Lpl+Lp2еȫתƵ CSʱIGBTܵ2ѹV2Ϊ
 
 
                                 3
       ʽLplΪ·ɢУLp2Ϊ·ɢ
      ȻVDsķָͬʱCSŵCS ѹzuiȶVS·̬
2. ͨģ
      ʼ״̬VT̬VDF2̬ͨIs VDF2CSϵѹΪvs LsVDs1·LsϵΪ0դͨźӳʱVTϵĵѹԼٶ½ 0ʱΪѹ½ʱΪTf2ڵѹ½ʱУ
 
 
                               4
       ʽili2ֱΪLplLp2еĵVVT, iVTֱΪVTϵĵѹVTĵ
      һٶCsϵĵѹô̵ʱάVsCsͨRs͢ŵ絽 0ͬʱLs+ LplѹֱΪIsʱVDF2ָֹzui·̬VTͨVDF2ֹIS VTLsCsϵĵѹΪ0LsеΪIs
      ֧·ģ޷ȷƽ·еɢΪɢ·йһ·ԽɢԽû·ģͱʾ֧·ģͱʾȷϷҪƹѹŸŵĵط߻˫Լɢ
      ģͿָƻ·ȸʴС͵·IJֹLplLp2һ1m²ӦlμH 㣻Ȼݾʽ(2)ʽ(3)ȷCSʽ(4)ȷLsRsѡҪ֤VTͨʱCSĵѹй0 ͬʱҲҪۺϿʽ(4)
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