电工技术学报2018，Vol.33Issue(12)：2821-2830,10.DOI:10.19595/j.cnki.1000-6753.tces.170247
基于开关电容的软开关高电压增益DC-DC变换器
Soft-Switching High Voltage Gain DC-DC Converter Based on Switched-Capacitor
摘要
Abstract
In this paper, a switched-capacitor based DC-DC converter topology with high voltage gain and soft-switching character is presented. The proposed topology can achieve high voltage gain without operating the switches at extreme duty cycle and has PWM voltage regulation ability similar to conventional Boost converter. Through resonant soft-switching technique, zero-voltage switching (ZVS) turn-on of all switches and zero-current switching (ZCS) turn-off of all diodes are achieved, which is useful to improve the efficiency and power density of the converter. The voltage stresses of switches and diodes are low, so low voltage level and low on-resistance devices can be adopted to reduce the conduction losses. The operation principle of the proposed topology was analyzed in detail, and the steady-state characteristics were analyzed, including voltage gain characteristics and soft-switching operating conditions. Finally, a prototype converter with 25-40V input and 400V/1kW output was established, and the experimental results verified the theoretical analysis.关键词
开关电容/高电压增益/谐振电感/软开关/DC-DC变换器Key words
Switched-capacitor/high voltage gain/resonant inductor/soft-switching/DC-DC converter分类
信息技术与安全科学引用本文复制引用
雷浩东,郝瑞祥,游小杰,项鹏飞..基于开关电容的软开关高电压增益DC-DC变换器[J].电工技术学报,2018,33(12):2821-2830,10.基金项目
国家重点研发计划(2016YFE0131700)和中央高校基本科研业务费专项资金(2017YJS176)资助项目. （2016YFE0131700）
