Single-Phase Single-Stage Transformer less Grid-Connected PV System

被引：158

作者：

Alajmi, Bader N. ^{[1
]}

Ahmed, Khaled H. ^{[2
]}

Adam, Grain Philip ^{[1
]}

Williams, Barry W. ^{[1
]}

机构：

[1] Univ Strathclyde, Dept Elect & Elect Engn, Glasgow G1 1XQ, Lanark, Scotland

[2] Univ Alexandria, Dept Elect Engn, Fac Engn, Alexandria 21526, Egypt

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2013年 / 28卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Current source inverter (CSI); grid-connected; maximum power point tracking (MPPT); photovoltaic (PV); INVERTER; CONVERTER;

D O I：

10.1109/TPEL.2012.2228280

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：

In this paper, a single-phase, single-stage current source inverter-based photovoltaic system for grid connection is proposed. The system utilizes transformer-less single-stage conversion for tracking the maximum power point and interfacing the photovoltaic array to the grid. The maximum power point is maintained with a fuzzy logic controller. A proportional-resonant controller is used to control the current injected into the grid. To improve the power quality and system efficiency, a double-tuned parallel resonant circuit is proposed to attenuate the second-and fourth-order harmonics at the inverter dc side. A modified carrier-based modulation technique for the current source inverter is proposed to magnetize the dc-link inductor by shorting one of the bridge converter legs after every active switching cycle. Simulation and practical results validate and confirm the dynamic performance and power quality of the proposed system.

引用

页码：2664 / 2676

页数：13

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