A Triple Boost Seven-Level Common Ground Transformerless Inverter Topology for Grid-Connected Photovoltaic Applications

被引：3

作者：

Gopinath, Narayanan Pandurangan ^{[1
]}

Vijayakumar, Krishnasamy ^{[1
]}

Ali, Jagabar Sathik Mohd ^{[2
]}

Raghupathi, Kumutha ^{[3
]}

Selvam, Sivakumar ^{[2
]}

机构：

[1] SRM Inst Sci & Technol, Dept Elect & Elect Engn, Chennai 603203, India

[2] Prince Sultan Univ, Coll Engn, Renewable Energy Lab, Riyadh 11586, Saudi Arabia

[3] SA Engn Coll, Dept Phys, Chennai 600077, India

来源：

ENERGIES | 2023年 / 16卷 / 08期

关键词：

transformerless inverter; common ground structure; switched-capacitor; leakage current; photovoltaic;

D O I：

10.3390/en16083428

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：

This article proposes a single-stage, seven-level (7L), switched-capacitor-based grid-connected inverter architecture with a common ground feature. This topology has the ability to boost the output voltage up to three times the input voltage. The proposed topology can diminish the leakage current in grid-connected photovoltaic (GC-PV) applications, and its capacitor voltages are self-balanced without any additional control strategies. The different operating modes are described in detail with their related mathematical expressions. The design of passive components and a detailed power loss analysis are presented. The merits of the proposed structure are demonstrated using a detailed comparative assessment. The grid-connected operation of the proposed inverter structure is simulated in the MATLAB/Simulink environment, and the results are presented. The laboratory prototype of 935 W is built and analyzed to validate the performance of the proposed structure.

引用

页数：20

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