A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current

Naser Vosoughi Kurdkandi; Milad Ghavipanjeh Marangalu; Shamim Mohammadsalehian; Hadi Tarzamni; Yam Siwakoti; Md Rabiul Islam; Kashem M. Muttaqi

doi:10.1109/ACCESS.2022.3182240

A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current

Naser Vosoughi Kurdkandi, Milad Ghavipanjeh Marangalu, Shamim Mohammadsalehian, Hadi Tarzamni, Yam Siwakoti, Md Rabiul Islam, Kashem M. Muttaqi

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

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 <italic>W</italic> laboratory prototype.

Original language	English
Pages (from-to)	63736-63753
Number of pages	18
Journal	IEEE Access
DOIs	https://doi.org/10.1109/ACCESS.2022.3182240
Publication status	Published - 2022
MoE publication type	A1 Journal article-refereed

Keywords

Capacitors
Inverters
leakage current limitation
Leakage currents
photovoltaic application
Switches
Topology
Transformer-less inverter
Transformers
Voltage
voltage boosting ability

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/ACCESS.2022.3182240Licence: CC BY

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title = "A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current",

abstract = "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 W laboratory prototype.",

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author = "Kurdkandi, {Naser Vosoughi} and Marangalu, {Milad Ghavipanjeh} and Shamim Mohammadsalehian and Hadi Tarzamni and Yam Siwakoti and Islam, {Md Rabiul} and Muttaqi, {Kashem M.}",

note = "Publisher Copyright: Author",

year = "2022",

doi = "10.1109/ACCESS.2022.3182240",

language = "English",

pages = "63736--63753",

journal = "IEEE Access",

issn = "2169-3536",

}

A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current. / Kurdkandi, Naser Vosoughi; Marangalu, Milad Ghavipanjeh; Mohammadsalehian, Shamim; Tarzamni, Hadi; Siwakoti, Yam; Islam, Md Rabiul; Muttaqi, Kashem M.

In: IEEE Access, 2022, p. 63736-63753.

Research output: Contribution to journal › Article › Scientific › peer-review

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AU - Kurdkandi, Naser Vosoughi

AU - Marangalu, Milad Ghavipanjeh

AU - Mohammadsalehian, Shamim

AU - Tarzamni, Hadi

AU - Siwakoti, Yam

AU - Islam, Md Rabiul

AU - Muttaqi, Kashem M.

N1 - Publisher Copyright: Author

PY - 2022

Y1 - 2022

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AB - 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 W laboratory prototype.

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KW - Inverters

KW - leakage current limitation

KW - Leakage currents

KW - photovoltaic application

KW - Switches

KW - Topology

KW - Transformer-less inverter

KW - Transformers

KW - Voltage

KW - voltage boosting ability

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JF - IEEE Access

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A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inverter with Less Leakage Current

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Keywords

UN SDGs

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