This article proposes a novel zero-voltage switching (ZVS) dc–dc converter to improve the performances of the traditional phase-shifted full-bridge converter. In the primary side, two half-bridge converters (HBCs), leading-HBC, and lagging-HBC are placed in parallel and are driven in a phase-shifted control. The secondary side is a current doubler rectifier (CDR) circuit consisting of four rectified diodes and two output filter inductors. With this structure, the proposed converter can achieve wide ZVS range, minimized circulating current, and low-current ripple of output filter. Furthermore, the current stress of lagging-HBC is lower than that of leading-HBC; different current-rated switches can be employed for the two HBCs, which is a benefit to optimize the ZVS conditions and cost. In this article, the operational principle and performances of the proposed converter are analyzed in depth. Finally, experimental results from a prototype (320–400 V input, 110 V/10 A output) are presented to validate the theoretical analysis.

中文翻译：

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一种带倍流整流器的双路半桥转换器

本文提出了一种新颖的零电压开关 (ZVS) dc-dc 转换器，以提高传统移相全桥转换器的性能。在初级侧，两个半桥转换器 (HBC)、超前 HBC 和滞后 HBC 并联放置，并以移相控制方式驱动。次级侧是一个电流倍增整流器 (CDR) 电路，由四个整流二极管和两个输出滤波电感组成。通过这种结构，所提出的转换器可以实现宽 ZVS 范围、最小化循环电流和输出滤波器的低电流纹波。此外，滞后-HBC 的当前应力低于领先-HBC；两个 HBC 可以采用不同的额定电流开关，这有利于优化 ZVS 条件和成本。在本文中，对所提出的转换器的工作原理和性能进行了深入分析。最后，展示了原型（320-400 V 输入，110 V/10 A 输出）的实验结果以验证理论分析。