摘要
提出了一种新型单级隔离型Sepic逆变器。该逆变器只需三个有源开关和一个高频变压器,结构简单、易于实现。该逆变器由直流Sepic变换器扩展而来,因而具有升降压能力,适于直流侧电压宽范围波动的可再生能源发电系统。介绍了所提逆变器的电路结构和工作原理,采用单周期控制实现了系统的闭环控制;给出了该逆变器的磁集成设计方案;在理论分析的基础上,进行了仿真和实验验证。仿真和实验结果表明,该逆变器具有良好的动、静态性能。
A novel single-stage isolated Sepic inverter is proposed. The proposed inverter onlyneeds three power devices and a high frequency transformer. Its structure is simple and easy toimplement. As derived from Sepic DC converter, the proposed inverter is of the ability to buck/boostinput voltage and is much suitable for renewable resource generation system with DC link voltage ofwide range fluctuation. The circuit structure and operation principle are introduced. One cycle controlis applied to realize the closed-loop control. The magnetic integration design scheme of the proposedinverter is presented. Simulation and experiments are performed. The results indicate that the proposedinverter is of excellent dynamic and stable performance.
作者
王立乔
祝百年
孙孝峰
Wang Liqiao;Zhu Bainian;Sun Xiaofeng(Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province Yanshan University Qinhuangdao 066004 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2016年第18期75-82,107,共9页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(50837003)
河北省自然科学基金(E2012203085)资助项目
关键词
单级隔离型Sepic逆变器
可再生能源发电系统
直流侧电压宽范围变化
单周期控制
磁集成
Single-stage isolated Sepic inverter
renewable resource generation system
wide range fluctuation of DC voltage
single cycle control
magnetic integration
