RC缓冲电路的优化设计

:1004-289X(2008)05-0051-03RC缓冲电路的优化设计杨凤彪1,杨怡君2,闫英敏1,赵霞1(1军械工程学院,石家庄050003;2河北工程大学,邯郸056000):在电力电子电路中,缓冲电路的设计是一个关键性问题,往往缓冲电路性能的好坏直接影响到系统的品质缓冲电路就其拓扑机构来说有很多种,在结构上的复杂程度也不一样,主要对应用最多的RC缓冲电路的设计进行讨论RC缓冲电路结构简单,设计和安装也比较方便,但是一个设计优良的RC缓冲电路同样能收到预期的效果根据实际研究,给出了一个RC缓冲器的计算实例:RC;缓冲电路;尖峰电压;纹波:TM13:BTheOptimumDesignofRCBufferCircuitYANGFengbiao1,YANGYijun2,YANYingmin1,ZHAOXia1(1OrdnanceEngineeringInstitute,Shijiazhuang050003,China;2HebeiEngineeringCollege,Handan056000,China)Abstract:ThedesignofRCbuffercircuitsisanimportantprobleminelectronicpowercircuits.Theperformanceofthebuffercircuitwilleffectthesystem.Thecircuithasmanykindsforitstopologicalmechanismandthecomplexdegreesofthestructurearedifferen.tRCbufferdesignswhichareappliedarediscussed.Thecircuitissimpleinstructureandconvientindesignandinsullation,butRCbuffercircuitofoptimumdesigncanachievepredictiveresults.Accordingtothepracticalresearch,anexampleofRCsnubberisgiven.Keywords:buffercircui;tpeakvoltage;ripplewave1,,,,,1IGBT,1IGBT:(1);(2)dI/dtdV/dt;(3)(SOA);(4);(5);(6)EMI,RCRCDRC2RC,,,,T1;51电气开关(2008.No.5),Ctest,,T2Lp=(T22-T21)142Ctest(1),Cp=1Lp(2fi)2(2),fi,,,,:RsLp/Cp(3),Rs(3),LCRC,,:PC=12CsV2o(4)Vo,:Pr=12CsV2on(5)n,,,,:Pr=CsV2of(6)f,,,:12CsV2o12LpI2(7)I,,:Cston/10Rs(8),;Cs8~10,,3,RC,:15kHz,Vo=300V,20s,11A,,1,T1=042s,47nF,22,T2=084s(1)(2)Lp=285H,Cp=157nF(3)Rs=28510-615710-9=426,40(7)(8)LpI2V2oCston10Rs,383nFCs50nF,47nF(6)6345W,20WRC32IGBT3RCIGBT3,RC,,,,,4,,RC(70)52电气开关(2008.No.5),,,,,,,,;,,,,,,,4,,,,,:(1),,(2),,,:1:,,;,;,,;220kV,,,,,,:(1),,(2),(3),,:2008-09-10(52),,RC,,,,RC[1]WilliamMcMurray,OPTIMUMSNUBBERSFORPOWERSEMICONDUCTORS[A].IEEEIAStransactions,Vo.lIA-8,No.5,Sept/Oct1972,pp.593-600.[2]王兆安,黄俊.电力电子技术[M].4版.北京.机械工业出版社,2003.9.:2008-02-27:(1977-),,,,,(1978-),,,,,70电气开关(2008.No.5)