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Reconfigurable Interleaved LLC Resonant Converter Using Hybrid Modulation for Ultrawide Output Voltage Range
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| Author(s) |
Tae-Seok KANG, Hyun-Gyu KOH, Yoo-Seop KIM, Yeong-Jun CHOI |
| Abstract |
Applications such as renewable energy, electric vehicle (EV) battery charger, EV electronic Components, energy storage system, and electrolyzer demand DC/DC converters with a wide voltage range. The LLC resonant converter is widely applied due to their high efficiency advantage. This paper proposes a reconfigurable interleaved LLC resonant converter with hybrid modulation for ultra-wide output voltage range applications. The proposed converter achieves three operating modes with extended voltage gain within a narrow frequency range by regulating the switching frequency and phase-shift angle. This allows the selection of a large magnetizing inductance and reduces circulating current and conduction losses. Additionally, the converter achieves zero voltage switching of the MOSFETs at full load. To verify the performance of the proposed converter, a 3.3kW rated converter with 400V input and 150V-800V output is designed. |
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| Filename: | 0278-epe2025-full-09383612.pdf |
| Filesize: | 761.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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