中国电机工程学报2011，Vol.31Issue(24)：40-45,6.
高效率高增益Boost-Flyback直流变换器
High Efficiency High Step-up Boost-Flyback DC/DC Converter
摘要
Abstract
A novel Boost-Flyback converter was proposed based on the combination of Boost and Flyback topologies. The energy stored in the leakage inductance of transformer is recycled and the active switch turn-off voltage is clamped by sharing the branch of the input side of the two topologies mentioned. High voltage gain is achieved with the output of Boost and Flyback topologies connected in series. The voltage gain of the converter is further improved with two of the Boost-Flybaek topologies proposed in input-in-parallel output-in-series connected. Devices stress, output and input voltage/current ripple are reduced. An output power control and discontinued current mode-zero voltage switching （DCM-ZVS） control were proposed also. The operational principle, voltage gain characteristics and principle of DCM-ZVS control method were analyzed in detail. The experimental results based on a 230 W 30 to 380 V DC/DC prototype verify the effectiveness of the theoretical analysis.关键词
高增益/输入并联输出串联/零电压开关/反激变换器/Boost变换器Key words
high step-up/parallel input series output/zero-voltage-switching （ZVS）/Flyback converter/Boostconverter分类
信息技术与安全科学引用本文复制引用
吴红飞,古俊银,张君君,邢岩,陈国呈..高效率高增益Boost-Flyback直流变换器[J].中国电机工程学报,2011,31(24):40-45,6.基金项目
江苏省科技成果转化基金（BA2008001). （）
