An Improved Multilevel Inverter for Single-Phase Transformerless PV System

被引：17

作者：

Faraji, Faramarz ^{[1
]}

Birjandi, Ali Akbar Motie ^{[2
]}

Mousavi, Sayed Mohammad G. ^{[3
]}

Zhang, Jianhua ^{[1
]}

Wang, Baocheng ^{[1
]}

Guo, Xiaoqiang ^{[1
]}

机构：

[1] Yanshan Univ, Dept Elect Engn, Qinhuangdao 066004, Hebei, Peoples R China

[2] Shahid Rajaee Teacher Training Univ, Fac Elect Engn, Tehran 1678815811, Iran

[3] Iran Univ Sci & Technol, Sch Railway Engn, Tehran, Iran

来源：

IEEE TRANSACTIONS ON ENERGY CONVERSION | 2021年 / 36卷 / 01期

基金：

中国国家自然科学基金;

关键词：

3L-SI-NPCI2; transformerless PV system; multilevel inverter; high efficiency; high reliability;

D O I：

10.1109/TEC.2020.3006552

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：

A single-phase Three-Level Split-Inductor Neutral Point Clamped Inverter-Improved (3L-SI-NPCI2) for transformerless photovoltaic (PV) application is proposed in this article. The proposed inverter utilizes two split inductors, which eliminate the shoot-through issue. Therefore, it is more reliable than conventional converters. Not needing dead time, achieving a high efficiency with lower current THD and low leakage current are other advantages of the proposed inverter. The operation principle, dynamic performance, output filter design and impacts of asymmetric filter inductors on leakage current are illustrated in the 3L-SI-NPCI2. The proposed topology is compared to seven existing transformerless topologies by simulation studies and results. Finally, an experimental prototype has been developed to show the benefits of the proposed inverter.

引用

页码：281 / 290

页数：10

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