![]() Similar content being viewed by othersĭesign of filter named as electromagnetic interference (EMI) is very important part of the power electronics because of decreasing the noise that are common and differential mode noises (CM), (DM), respectively. As a result, better efficiency with SiC Mosfet as 83% and better THD with Si Mosfet as 4.9% are conducted. Furthermore, SiC and Si Mosfets are employed separately in the converter and compared by using each DM filters regarding to power factor, THD, efficiency through applications. Maximum percentage improvement comparing to the IEC6 is 27.5% for third harmonic. Applications with each filters provide THD requirements, obtained 4.9% as a best value, lower than IEC6 standard. Moreover, practical design methodology of filter types avoiding complex mathematical procedure is given in this paper. Besides, LCL with C filter provides better control characteristics with maximum allowable gain for stability as 0.7585 higher than other topologies. Proposed LCL filter ensures 45% reduction of total inductor value, comparing to LC filter. ![]() Thanks to the applications, presented results of LCL with parallel C filter is better than others with 4.9% current THD and ‘1’ power factor. So, increasing the effectivity of LCL filter, new filter structure LCL with parallel C filter is proposed and modeled in this paper. It is also presented that solely LCL filter which is not analyzed for PFC converters in detail in literature, does not give desired results. Second main contribution is to analyze filter types by linear methods for the transfer functions cascading the converter and filter transfer functions, which is not presented for PFC converters. Average model derivation based on state-space, for DCM operation of input side inductor of isolated PFC Ćuk converter that is not introduced in literature is the main contribution of the paper. Each filter is modeled, designed, and applied experimentally via isolated PFC Ćuk converter. Application of PFC isolated Ćuk converter is conducted with 42 kHz switching frequency and 50 W power. Examining impacts of differential mode (DM) filter topologies covering pi, LC with damping, LC, LCL filter through isolated Ćuk single phase PFC converter is realized in this paper regarding to power factor, THD and efficiency.
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