High-Efficiency Three-Level SEPIC for Grid-Tied PV Systems

被引：0
|
作者：
Yang, Min-Kwon [1 ]
Lee, Seung-Jae [1 ]
Heo, Jun [1 ]
Choi, Woo-Young [1 ]
机构：
[1] Chonbuk Natl Univ, Div Elect Engn, Jeonju, South Korea
来源：
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2016年
基金：
新加坡国家研究基金会;
关键词：
High-efficiency; Single-ended primary-inductor converter (SEPIC); Three-level; Photovoltaic (PV); PHOTOVOLTAIC SYSTEMS; CONVERTER; VOLTAGE; DESIGN; MPPT;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The two-level single-ended primary-inductor converter (SEPIC) has been used for grid-tied photovoltaic (PV) systems. However, it has high switching losses because of high voltage stresses. To reduce the switching losses, a three-level SEPIC is suggested in this paper. The three-level SEPIC has low switching losses by reducing the switch voltage stress. It improves power efficiency by using a lower-voltage-rated switch compared to the switch in the two-level SEPIC. The capacitor voltage balance control is presented with a maximum power point tracking (MPPT). Experimental results for a 1.0 kW prototype system are discussed with a grid-tied transformerless H6 inverter.
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收藏
页数：5
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