输入电流低纹波高增益软开关直流变换器  

High Gain Soft-switching DC/DC Converter With Low Input Current Ripple

作　　者：丁新平 孙玉亮 俞寅昊 李本阳 DING Xin-ping;SUN Yu-liang;YU Yin-hao;LI Ben-yang(Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学,自动化学院,江苏南京210044

出　　处：《电力电子技术》2024年第1期107-110,117,共5页Power Electronics

基　　金：国家自然科学基金(52077105);山东省自然科学基金(ZR2020ME200)。

摘　　要：非隔离型高增益软开关DC/DC变换器广泛应用于清洁能源发电系统。所提变换器基于准Z源网络,集成了三绕组耦合电感和倍压单元技术,开关管与电容组成了有源箝位,实现了漏感能量回收;通过对元器件参数和死区时间的配置,所有开关管实现了零电压开关(ZVS),二极管都实现了零电压零电流开关(ZVZCS),提升了变换器的效率。此处详细分析了所提变换器的工作模态、稳态特性下元器件的电压、电流应力。在实验室搭建一台200 W功率、380 V输出电压的实验样机验证了所提变换器的可行性。Non-isolated high gain soft-switching DC/DC converters are widely used in clean energy power generation systems.The proposed converter is based on quasi-Z-source network and integrates three winding coupled-inductor and voltage multiplier cell technology.The switches and the capacitors form an active clamp,which recycles leakage inductance energy;through the configuration of component parameters,the switches realize zero-voltage switching(ZVS),and the diodes realize zero-voltage-zero-current switching(ZVZCS)which improves the efficiency of the converter.The working mode of the proposed converter and the voltage and current stress of the components under steady-state characteristics are analyzed.An experimental prototype with 200 W output power and 380 V output voltage is built in the laboratory to verify the feasibility of the proposed converter.

关 键 词：变换器 高增益 倍压单元 

分 类 号：TM46[电气工程—电器]