A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current
This paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9794652/ |
| _version_ | 1828725494584967168 |
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| author | Naser Vosoughi Kurdkandi Milad Ghavipanjeh Marangalu Shamim Mohammadsalehian Hadi Tarzamni Yam P. Siwakoti Md. Rabiul Islam Kashem M. Muttaqi |
| author_facet | Naser Vosoughi Kurdkandi Milad Ghavipanjeh Marangalu Shamim Mohammadsalehian Hadi Tarzamni Yam P. Siwakoti Md. Rabiul Islam Kashem M. Muttaqi |
| author_sort | Naser Vosoughi Kurdkandi |
| collection | DOAJ |
| description | This paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the photovoltaic (PV) system, which is the major problem in grid-tied PV applications. Additional significant features include- reduced filter size, lower total harmonic distortion (THD) of the injected current to the grid, and voltage boosting ability. Moreover, the proposed topology provides full reactive power support to the grid. A control strategy is designed and implemented to provide a voltage boost ability without using any additional dc-dc boost converter. Finally, the performance of the proposed inverter is validated by the 770 <inline-formula> <tex-math notation="LaTeX">$W$ </tex-math></inline-formula> laboratory prototype. |
| first_indexed | 2024-04-12T13:28:15Z |
| format | Article |
| id | doaj.art-3ce8dcfa8a70415fa4652272a6ccd27b |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T13:28:15Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-3ce8dcfa8a70415fa4652272a6ccd27b2022-12-22T03:31:16ZengIEEEIEEE Access2169-35362022-01-0110637366375310.1109/ACCESS.2022.31822409794652A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage CurrentNaser Vosoughi Kurdkandi0https://orcid.org/0000-0001-7097-0748Milad Ghavipanjeh Marangalu1Shamim Mohammadsalehian2https://orcid.org/0000-0003-4103-5675Hadi Tarzamni3https://orcid.org/0000-0002-6963-9852Yam P. Siwakoti4https://orcid.org/0000-0002-3869-412XMd. Rabiul Islam5https://orcid.org/0000-0003-3133-9333Kashem M. Muttaqi6https://orcid.org/0000-0003-2424-0722Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Tallinn, EstoniaFaculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, IranDepartment of Electrical and Computer Engineering, Western University, London, ON, CanadaDepartment of Electrical Engineering and Automation, Aalto University, Espoo, FinlandFaculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW, AustraliaFaculty of Engineering and Information Sciences, School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, NSW, AustraliaFaculty of Engineering and Information Sciences, School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, NSW, AustraliaThis paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the photovoltaic (PV) system, which is the major problem in grid-tied PV applications. Additional significant features include- reduced filter size, lower total harmonic distortion (THD) of the injected current to the grid, and voltage boosting ability. Moreover, the proposed topology provides full reactive power support to the grid. A control strategy is designed and implemented to provide a voltage boost ability without using any additional dc-dc boost converter. Finally, the performance of the proposed inverter is validated by the 770 <inline-formula> <tex-math notation="LaTeX">$W$ </tex-math></inline-formula> laboratory prototype.https://ieeexplore.ieee.org/document/9794652/Transformer-less invertervoltage boosting abilityleakage current limitationphotovoltaic application |
| spellingShingle | Naser Vosoughi Kurdkandi Milad Ghavipanjeh Marangalu Shamim Mohammadsalehian Hadi Tarzamni Yam P. Siwakoti Md. Rabiul Islam Kashem M. Muttaqi A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current IEEE Access Transformer-less inverter voltage boosting ability leakage current limitation photovoltaic application |
| title | A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current |
| title_full | A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current |
| title_fullStr | A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current |
| title_full_unstemmed | A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current |
| title_short | A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter With Less Leakage Current |
| title_sort | new six level transformer less grid connected solar photovoltaic inverter with less leakage current |
| topic | Transformer-less inverter voltage boosting ability leakage current limitation photovoltaic application |
| url | https://ieeexplore.ieee.org/document/9794652/ |
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