Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes
A new single-phase transformerless grid-connected PV inverter is presented in this paper. Investigations in transformerless grid-connected PV inverters indicate the existence of the leakage current is directly related to the variable common-mode voltage (CMV), which is presented in detail. On the ot...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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University of Mohaghegh Ardabili
2021-04-01
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| Series: | Journal of Operation and Automation in Power Engineering |
| Subjects: | |
| Online Access: | http://joape.uma.ac.ir/article_913_ed10c7ba48cb84cee9b9cd6faa330229.pdf |
| _version_ | 1818594851730489344 |
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| author | F. Mohammadi J. Milimonfared H. Rastegar M. Farhadi-Kangarlu |
| author_facet | F. Mohammadi J. Milimonfared H. Rastegar M. Farhadi-Kangarlu |
| author_sort | F. Mohammadi |
| collection | DOAJ |
| description | A new single-phase transformerless grid-connected PV inverter is presented in this paper. Investigations in transformerless grid-connected PV inverters indicate the existence of the leakage current is directly related to the variable common-mode voltage (CMV), which is presented in detail. On the other hand, in recent years it has become mandatory for the transformerless grid-connected PV inverters to satisfy new grid-codes such as low-voltage ride-through (LVRT) capability via injecting reactive power during grid faults. Therefore, in this paper, the design of the proposed topology is based on retaining the constant CMV to suppress the leakage current and also to provide reactive power injection capability during grid faults. The control strategies for injecting reactive power in the LVRT condition are also examined. To validate the presented theoretical concepts, the performance and dynamic response of the proposed transformerless PV inverter are investigated by MATLAB/Simulink and the simulation results are presented and discussed. |
| first_indexed | 2024-12-16T11:06:42Z |
| format | Article |
| id | doaj.art-ab6b13fd8f5e44d59584b42bd6c81a68 |
| institution | Directory Open Access Journal |
| issn | 2322-4576 |
| language | English |
| last_indexed | 2024-12-16T11:06:42Z |
| publishDate | 2021-04-01 |
| publisher | University of Mohaghegh Ardabili |
| record_format | Article |
| series | Journal of Operation and Automation in Power Engineering |
| spelling | doaj.art-ab6b13fd8f5e44d59584b42bd6c81a682022-12-21T22:33:51ZengUniversity of Mohaghegh ArdabiliJournal of Operation and Automation in Power Engineering2322-45762021-04-0191495910.22098/joape.2021.6660.1494913Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid CodesF. Mohammadi0J. Milimonfared1H. Rastegar2M. Farhadi-Kangarlu3Department of Electrical Engineering, Amirkabir University of Technology, Tehran, IranDepartment of Electrical Engineering, Amirkabir University of Technology, Tehran, IranDepartment of Electrical Engineering, Amirkabir University of Technology, Tehran, IranFaculty of Electrical and Computer Engineering, Urmia University, Urmia, Iran.A new single-phase transformerless grid-connected PV inverter is presented in this paper. Investigations in transformerless grid-connected PV inverters indicate the existence of the leakage current is directly related to the variable common-mode voltage (CMV), which is presented in detail. On the other hand, in recent years it has become mandatory for the transformerless grid-connected PV inverters to satisfy new grid-codes such as low-voltage ride-through (LVRT) capability via injecting reactive power during grid faults. Therefore, in this paper, the design of the proposed topology is based on retaining the constant CMV to suppress the leakage current and also to provide reactive power injection capability during grid faults. The control strategies for injecting reactive power in the LVRT condition are also examined. To validate the presented theoretical concepts, the performance and dynamic response of the proposed transformerless PV inverter are investigated by MATLAB/Simulink and the simulation results are presented and discussed.http://joape.uma.ac.ir/article_913_ed10c7ba48cb84cee9b9cd6faa330229.pdftransformerless grid-connected pv inverterleakage currentcommon-mode voltagelvrt |
| spellingShingle | F. Mohammadi J. Milimonfared H. Rastegar M. Farhadi-Kangarlu Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes Journal of Operation and Automation in Power Engineering transformerless grid-connected pv inverter leakage current common-mode voltage lvrt |
| title | Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes |
| title_full | Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes |
| title_fullStr | Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes |
| title_full_unstemmed | Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes |
| title_short | Design of A Single-Phase Transformerless Grid-Connected PV Inverter Considering Reduced Leakage Current and LVRT Grid Codes |
| title_sort | design of a single phase transformerless grid connected pv inverter considering reduced leakage current and lvrt grid codes |
| topic | transformerless grid-connected pv inverter leakage current common-mode voltage lvrt |
| url | http://joape.uma.ac.ir/article_913_ed10c7ba48cb84cee9b9cd6faa330229.pdf |
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