Journal
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
Volume 5, Issue 3, Pages 1272-1286Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JESTPE.2017.2687398
Keywords
Efficiency; high frequency; high voltage; LCLC resonant converter; zero current switching (ZCS); zero voltage switching (ZVS)
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In this paper, the LCLC resonant converter with zero current switching (ZCS) and zero voltage switching (ZVS) is investigated for two-stage high-voltage (several kilovolts) high-frequency (several hundred kilohertzes) applications. The working principles of the LCLC resonant converter with ZCS and ZVS are explained and the equivalent circuit of each mode is established. In addition, based on the working principles, design equations are deduced. Simulations in PSIM and MATLAB support the analysis. An LCLC resonant converter with 40-V input, 4800-V output, 500-kHz switching frequency, 295-W output power, and 96.8% efficiency is presented and the experimental results validate the analysis.
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