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LCLCL多谐振变换器具有宽增益特性，适用于宽电压变化范围的应用场合。本文详细分析了其工作模态，并基于基波分析方法研究了该变换器的多谐振频率和增益特性。与传统LLC谐振变换器相比，LCLCL多谐振变换器不仅能实现更宽的增益范围，在两谐振频率比1∶3的配置下还能利用3次谐波传递有功功率，有效提高变换容量。此外，其内置的陷波器可降低谐振电流峰值，实现短路保护功能。实验结果验证了理论分析的正确性，并证明了该变换器在短路保护方面的优势。
Abstract：The LCLCL multi-resonant converter exhibits wide gain characteristics,making it suitable for applications with a wide voltage variation range.This paper provides a detailed analysis of its operational modes and derives the multiresonant frequencies and gain characteristics of the converter based on the fundamental harmonic approximation method.Compared to traditional LLC resonant converters,the LCLCL multi-resonant converter not only achieves a wider gain range but also utilizes the third harmonic to transfer active power under the 1∶3 dual-resonant-frequency configuration,effectively enhancing power conversion capacity.Additionally,its built-in notch filter can suppress the resonant current peak,enabling short-circuit protection capability.Experimental results validate the theoretical analysis and demonstrate the converter's advantages in short-circuit protection.
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基本信息:
DOI：10.20222/j.cnki.cn61-1124/tm.2026.02.003
中图分类号:TM46
引用信息:
[1]王展,刘自程,王明桢.一种适用于宽电压范围的半桥LCLCL谐振变换器研究[J].电力电子技术,2026,60(02):1-7.DOI:10.20222/j.cnki.cn61-1124/tm.2026.02.003.
基金信息:
国家级大学生创新创业训练计划项目（202410487018）
2026-02-11
2026-02-11