Three-phase double-grounded buck-boost PV inverter without shoot-through problem

被引：1

作者：

Yang, Mengwei ^{[1
]}

Yao, Zhilei ^{[1
]}

机构：

[1] Shanghai Maritime Univ, Dept Elect Engn, Shanghai 201306, Peoples R China

来源：

ENERGY REPORTS | 2023年 / 9卷

基金：

中国国家自然科学基金;

关键词：

PV inverter; Common mode leakage current; Shoot-through problem; Buck-boost; Double-grounded; GRID-CONNECTED INVERTER; LEAKAGE CURRENT; TRANSFORMERLESS;

D O I：

10.1016/j.egyr.2023.05.136

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 conventional transformerless photovoltaic(PV) inverter has the common mode leakage current and shoot-through problems. In addition, the output voltage of the PV module is low under the shading condition, resulting in the inverter not working properly. A three-phase double-grounded buck-boost PV inverter without shoot-through problem is proposed. The front-end converter of this inverter is composed of two boost converters, which can realize boost conversion. The rear-end inverter consists of three dual-buck half-bridge inverters, which solves the shoot-through problem. In this topology, the load ground is connected to the negative ground of the PV module, eliminating the common mode leakage current. The operating principle and mode analysis are described in detail. Finally, a simulation circuit is built to verify the theoretical analysis. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：506 / 511

页数：6

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