大功率直流充电模块设计

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中图分类号：TM46 文献标志码：A 文章编号：2095-8188（2025）05-0043-09

DOI：10.16628/j.cnki.2095-8188.2025.05.006

Abstract： In high-power applications，thethree-phase interleaved LLC resonantconvertercan effectively reduce the single-phase current stress and the output ripple through the interleaved paralel connection technique， and minimize the sizeof theoutput filter capacitor to further improve thepower density.The circuit mathematical model forthethree-phaseinterleavedLLCresonantconverterisconstructed，thekeyparametersaredesigned，and the equivalentcircuit modelisadoptedforthe theoretical analysis.Meanwhiletheheat dissipationoptimizationof the magneticcomponents is taken into account to ensure the conventer’sreliable operation in high-temperature environments.Finally，a 60kW three-phase interleaved LLC resonant converter prototype is designed and constructed.Through experimental tests，theeffectiveness of the proposed scheme is verified，and providing a reference for the design and optimization of LLC resonant converters in high-power applications.

Key words： LLC resonant converters； interleaved paralel connection; parameter design； high-powerapplications

0 引言

LLC谐振变换器凭借高效率、高功率密度、电气隔离及宽输出范围等优势，在电力电子领域得到了广泛应用[1-3]。（剩余8261字）