The concepts of strict duality and generalized duality are proposed while the duality and similarity of DC converters are investigated.For three kinds of DC converters,i.e.Buck,Boost and Buck-Boost converters,including their isolated and non-isolated types,their strict dual converters are derived while the possible generalized dual converters are analyzed.It is found that for a known basic converter,there are three dual converters,one of which is its strict dual converter and the others are its generalized dual converters.The relationships between combined and basic converters are mainly analyzed through similarity,and similar processing methods used in the derivation of the converter are explained,which is conducive to expansion and extension of converters.The soft-switching DC converter can be viewed as a combination of DC converter and soft-switching circuit,so it can be studied by using duality and similarity.The generalized dual and strict dual converters of quasi-resonant converters are mainly researched,and the duality among other soft-switching DC converter is briefly analyzed.Finally,by analyzing the duality of the simulation waveforms of DC converter and soft-switching DC converter,the correctness of the theoretical analysis is verified.
关键词
直流变换器/严格对偶/广义对偶/相通性/软开关
Key words
DC converters/strict duality/generalized duality/similarity/soft switching
维普
万方数据