CSI and CSI7 current source inverters for modular transformerless PV inverters

被引：11

作者：

Lorenzani E. ^{[1
]}

Migliazza G. ^{[1
]}

Immovilli F. ^{[1
]}

Buticchi G. ^{[2
]}

机构：

[1] DISMI-Department of Science and Methods for Engineering, University of Modena and Reggio Emilia, Reggio Emilia

[2] Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo

来源：

Chinese Journal of Electrical Engineering | 2019年 / 5卷 / 02期

关键词：

Current source inverter; Ground leakage current; Photo-voltaic power systems; Renewable energy sources;

D O I：

10.23919/CJEE.2019.000009

中图分类号：

学科分类号：

摘要：

Current source inverter (CSI) is a class of power electronic converters that, thanks to the inherent boost capability and ease of control, is investigated for grid-tied photovoltaic power conversion applications. Traditional CSI and CSI7 topologies are here analyzed and compared with two kind of space vector modulation strategies mainly in terms of ground leakage current both in simulations and experiments. Furthermore, THD of the injected grid current and the computation of conduction and switching semiconductor power losses are also carried out in numerical simulations. The topology comparison is carried out with the use of a different number of PV modules, to analyze the robustness of the topologies to different size of the PV strings. Simulation and experimental results show that the CSI7 topology, with respect to conventional CSI, allows to strongly reduce ground leakage current, phase current THD and semicondutor power losses, at the price of an additional power device. © 2019 IEEE. All rights reserved.

引用

页码：32 / 42

页数：10

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