电工技术学报2019，Vol.34Issue(2)：296-305,10.DOI:10.19595/j.cnki.1000-6753.tces.171194
基于脉冲频率调制的高增益隔离型软开关直流变换器
A High Step-Up Isolated Soft-Switching DC-DC Converter with Pulse Frequency Modulation
摘要
Abstract
A high step-up isolated soft-switching DC/DC converter with pulse frequency modulation (PFM) was presented in this paper.The converter integrates a flyback converter with active clamp and similar voltage multiplier cells, and all the transistors have soft-switching.The structure of this proposed converter is simple and easy to achieve high voltage gain.At the same time, compared with the pulse width modulation (PWM) mode, the control mode of PFM modulation further reduces the power tube on the current stresses, which helps to improve the converter's efficiency.The operation principles and characteristics of the proposed converter were analyzed in detail, and the two control strategies were compared.Finally, a 160 W, 45V/380 V laboratory prototype circuit was implemented to verify the effectiveness and accuracy of the theoretical analysis.关键词
高增益/软开关/脉冲频率调制/零电压开通/零电流关断Key words
High step-up/soft-switching/pulse frequency modulation/zero voltage switching (ZVS)/zero current switching (ZCS)分类
信息技术与安全科学引用本文复制引用
章治国,刘俊良,郭强,陈艳..基于脉冲频率调制的高增益隔离型软开关直流变换器[J].电工技术学报,2019,34(2):296-305,10.基金项目
国家自然科学基金(51607020) （51607020）
重庆市教委科学技术研究(KJ1709209、KJ1600944)资助项目 （KJ1709209、KJ1600944）
