第44卷第4期2023年8月Vol.44No.4Aug.2023发电技术发电技术PowerGenerationTechnology电感对DC/DC变换效率影响分析巫付专，李昊阳，巫曦，陈蒙娜（中原工学院电子信息学院，河南省郑州市451191）InfluenceofInductanceonDC/DCConversionEfficiencyWUFuzhuan,LIHaoyang,WUXi,CHENMengna(SchoolofElectronicandInformation,ZhongyuanUniversityofTechnology,Zhengzhou451191,HenanProvince,China)摘要摘要：针对电感对DC/DC变换性能影响的问题，以Boost变换器为例，对非理想情况下Boost变换等效电路和转换效率影响因素进行了分析，得到电感参数与电路输出电压、转换效率的关系。根据电感参数对电流纹波和电路转换效率影响的分析，在传统以临界连续电流为依据设计滤波电感值的基础上，提出了一种约束电感值选择范围的方法，并对KS226-075A磁芯的局部磁滞损耗和铜耗进行了计算，得到DC/DC变换器转换效率随电感值增大的变化趋势。最后，通过实验验证了理论的正确性和方法的可行性，同时根据实验结果修正了电感值的选取范围，并对计算结果与实验结果存在的误差进行了分析说明。关键词关键词：电力电子；DC/DC变换；转换效率；电感；局部磁滞损耗ABSTRACT:AimingattheinfluenceofinductanceonDC/DCconversionperformance,thispapertooktheBoostconverterasanexampletoanalyzethefactorsaffectingtheequivalentcircuitandconversionefficiencyofBoostconverterunderthenon-idealconditions,andobtainedtherelationshipbetweeninductanceparametersandcircuitoutputvoltageandconversionefficiency.Onthebasisofanalyzingtheinfluenceofinductanceparametersonthecurrentrippleandcircuitefficiency,amethodtolimittheselectionrangeofinductancevaluewasproposedbasedonthetraditionaldesignoffilterinductorconsideringthecriticalcontinuouscurrent.ThelocalhysteresislossandcopperlossofKS226-075Acorewerecalculated,andthechangetrendofDC/DCconverterconversionefficiencywiththeincreaseofinductancewasobtained.Finally,thecorrectnessofthetheoryandthefeasibilityofthemethodwereverifiedbyexperiments.Atthesametime,theselectionrangeofinductancewascorrectedaccordingtotheexperimentalresults,andtheerrorbetweenthecalculationandexperimentalresultswasanalyzedandexplained.KEYWORDS:powerelectronic;DC/DCconversion;conversionefficien...
