Abstract This article proposes an isolated high step-up dual-flyback DC–DC converter with a resonant voltage multiplier. The proposed converter achieves galvanic isolation and high voltage gain by adopting dual-flyback structure and voltage multiplier. The energy of the leakage inductors is recycled and the maximum voltage of main switch is clamped to low voltage by the clamping diode. Also, the diodes of voltage multiplier and the output diode have low voltage stress. To alleviate the surge current and reverse-recovery losses at the voltage multiplier, current resonance is utilized at the voltage multiplier. Experiments conducted on a 120 W 24 V/200V laboratory prototype are provided to verify the analysis and performance of the proposed converter.

中文翻译：

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具有谐振电压倍增器的隔离式高升压双反激式 DC-DC 转换器

摘要 本文提出了一种带有谐振电压倍增器的隔离式高升压双反激式 DC-DC 转换器。所提出的转换器通过采用双反激结构和电压倍增器来实现电流隔离和高电压增益。漏电感的能量被回收，主开关的最大电压被钳位二极管钳位到低电压。此外，倍压器的二极管和输出二极管具有低电压应力。为了减轻电压倍增器的浪涌电流和反向恢复损耗，在电压倍增器上使用了电流谐振。提供了在 120 W 24 V/200V 实验室原型上进行的实验，以验证所提出的转换器的分析和性能。