A Single-phase Buck-boost AC-AC Converter with Three Legs

被引：12
|
作者：
Zhou, Min [1 ]
Sun, Yao [1 ]
Su, Mei [1 ]
Li, Xing [2 ]
Liu, Fulin [1 ]
Liu, Yonglu [1 ]
机构：
[1] Cent South Univ, Dept Elect Engn, Changsha, Hunan, Peoples R China
[2] Hunan Univ, Dept Elect & Elect Engn, Changsha, Hunan, Peoples R China
来源：
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY | 2018年 / 13卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Buck-boost operation; High efficiency; Single-phase AC-AC converter; Step-changed frequency; MATRIX CONVERTER; CONTROL STRATEGY; IMPLEMENTATION; TOPOLOGIES; DESIGN;
D O I：
10.5370/JEET.2018.13.2.838
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a single-phase buck-boost AC-AC converter. It consists of three legs with six switching units (each unit is composed of an active switch and a diode) and its input and output ports share a common ground. It can provide buck-boost voltage operation and immune from shoot-through problem. Since only two switching units are involved in the current paths, the conduction losses are low, which improves the system efficiency. The operation principle of the proposed circuit is firstly presented, and then, various operation conditions are introduced to achieve different output voltages with step-changed frequencies. Additionally, the parameters design and comparative analysis of the power losses are also given. Finally, experimental results verify the correctness of the proposed converter.
引用
收藏
页码：838 / 848
页数：11
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