A New Four-level Transformer-less Single-phase Inverter for Grid-connected Photovoltaic Systems

被引：0
|
作者：
Yousofi-Darmian, S. [1 ]
Barakati, S. Masoud [1 ]
机构：
[1] Univ Sistan & Baluchestan, Dept Elect & Comp, Zahedan, Iran
来源：
2014 22nd Iranian Conference on Electrical Engineering (ICEE) | 2014年
关键词：
transformer-less inverter; leakage current; photovoltaic system;
D O I：
暂无
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：
Because of the characteristics of high efficiency and low cost, the transformer-less photovoltaic (PV) grid-connected inverters have been popularized in the application of solar electric generation system in residential market. However, in these inverters the ground leakage current through the stray capacitors between the PV array and the ground is harmful and causes losses and electromagnetic interference. This paper presents a new four-level single-phase inverter for grid-connected photovoltaic systems with a low leakage current. The proposed inverter can operate in non-unity power factors. For minimizing the leakage current, a switching control strategy is presented. The simulation results verify the superiority of the proposed inverter structure.
引用
收藏
页码：814 / 819
页数：6
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