电源学报2025，Vol.23Issue(1)：32-43,12.DOI:10.13234/j.issn.2095-2805.2025.1.32
一种低占空比丢失的移相全桥ZVZCS变换器
Phase-shifted Full-bridge ZVZCS Converter with Low Duty Cycle Loss
摘要
Abstract
Phase-shifted full-bridge zero-voltage zero-current switching(ZVZCS)converters are favored in high-power DC conversion applications owing to their advantages such as simple structures and high efficiency.However,high-power phase-shifted full-bridge ZVZCS converters still face problems including difficulty in the current reset and severe duty cycle loss.In response to the above issues,a novel phase-shifted full-bridge ZVZCS converter is put forward,which ensures that it can realize zero-current switching over a wide load range by introducing an auxiliary circuit on the primary side to reset the current to zero before the turn-on of lagging-leg switches.At the same time,it can accelerate the commutation speed on the primary side,reduce the duty cycle loss and realize an optimized design of power supply.Based on the analysis of the circuit structure,working principle and characteristics of the proposed converter,a 1 kW experimental prototype was designed to verify its correctness.关键词
移相全桥/零电压零电流开关/占空比丢失Key words
Phase-shifted full-bridge/zero-voltage zero-current switching(ZVZCS)/duty cycle loss分类
动力与电气工程引用本文复制引用
封泽龙,石勇,王宇婷,徐可心..一种低占空比丢失的移相全桥ZVZCS变换器[J].电源学报,2025,23(1):32-43,12.基金项目
陕西省重点研发计划资助项目(2024GX-YBXM-281)This work is supported by the Key Research and Development Project of Shaanxi Province under the grant 2024GX-YBXM-281 （2024GX-YBXM-281）
