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LCL Trap Filter Analysis with a PFC Isolated Ćuk Converter Using SiC MOSFET for DCM

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  • Erdal Şehirli

    (Division Power Electronics, Silicon Austria Labs GmbH, Sandgasse 34, 8010 Graz, Austria)

Abstract

The main contribution of the paper concerns the use of an LCL trap filter with a PFC isolated Ćuk converter. Further, SiC MOSFET is used with a PFC isolated Ćuk converter designed for 50 W with 42 kHz in DCM. A small-signal model of the converter is cascaded with the filter model to investigate the effect of the filter on the whole system. Moreover, large-signal and small-signal models of the converter are compared to investigate the requirement of the small-signal analysis. In addition, an LTspice simulation using SiC MOSFET of the system is conducted and the results are compared by the applications for both LC and LCL trap filters with respect to different loading conditions. Further, the LCL trap filter is compared with the LC filter regarding the PF, THD, and efficiency. Controller design considering the filter is also presented. In addition, the converter is operated and compared using linear and nonlinear loads for each filter. Parametric variation in the filter components is investigated. As a result of the simulation and applications, the THD of the grid current is 4.83% and the PF is 0.998, meeting the standards, and the overall efficiency of the system is 85% with the LCL trap filter. It can be concluded that the presented filter provides better results than the LC filter.

Suggested Citation

  • Erdal Şehirli, 2024. "LCL Trap Filter Analysis with a PFC Isolated Ćuk Converter Using SiC MOSFET for DCM," Energies, MDPI, vol. 17(3), pages 1-22, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:3:p:758-:d:1333802
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    References listed on IDEAS

    as
    1. Lingling Xie & Di Wan, 2023. "Modeling and Harmonic Analysis of a Fractional-Order Zeta Converter," Energies, MDPI, vol. 16(9), pages 1-18, May.
    2. Xingyu Yang & Huanyi Zhou & Mohammad Alathamneh & R. M. Nelms, 2023. "An Evolutionary Annealing–Simplex Method for Inductance Value Selection for LCL Filters," Energies, MDPI, vol. 16(10), pages 1-16, May.
    3. Zhuangzhi Dai & Jilong Liu & Kefeng Li & Zhiqin Mai & Guijing Xue, 2023. "Research on a Modeling and Control Strategy for Interleaved Boost Converters with Coupled Inductors," Energies, MDPI, vol. 16(9), pages 1-15, April.
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