A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications

Sze Sing Lee; Yongheng Yang; Kyo Beum Lee

doi:10.1109/IECON43393.2020.9255097

A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications

Sze Sing Lee, Yongheng Yang, Kyo Beum Lee

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

11 Citations (Scopus)

Abstract

In this paper, a novel 5-level inverter with common ac and dc ground is proposed for solar photovoltaic (PV) applications. The newly established common-ground-T-type (CGT-type) inverter is a single-stage topology restructured from the combination of a classical T-type inverter and a front-end three-level boost converter. Its distinctive topological structure can effectively eliminate the common mode voltage issue, prevent leakage currents, and ensure a continuous input current in PV systems. More importantly, it requires only two capacitors to realize an ac voltage which can be significantly boosted from a single dc source. A pulse width modulation (PWM) scheme is also established to undertake the following tasks simultaneously: charging of the boost inductor with a constant duty-cycle, and switching of two capacitors for 5-level ac voltage generation. The operation and feasibility of the proposed CGT-type inverter is analyzed and validated through simulation results.

Original language	English
Title of host publication	Proceedings - IECON 2020 : 46th Annual Conference of the IEEE Industrial Electronics Society
Number of pages	5
Publisher	IEEE
Publication date	18 Oct 2020
Pages	1160-1164
Article number	9255097
ISBN (Print)	978-1-7281-5415-2
ISBN (Electronic)	9781728154145
DOIs	https://doi.org/10.1109/IECON43393.2020.9255097
Publication status	Published - 18 Oct 2020
Event	46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 - Virtual, Singapore, Singapore Duration: 18 Oct 2020 → 21 Oct 2020 http://www.conferences.academicjournals.org/cat/physical-sciences/46th-annual-conference-of-the-ieee-industrial-electronics-society

Conference

Conference	46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020
Country/Territory	Singapore
City	Virtual, Singapore
Period	18/10/2020 → 21/10/2020
Sponsor	IEEE Industrial Electronics Society (IES), SPECS - Smart Grid + Power Electronics Consortium Singapore, The Institute of Electrical and Electronics Engineers (IEEE)
Internet address	http://www.conferences.academicjournals.org/cat/physical-sciences/46th-annual-conference-of-the-ieee-industrial-electronics-society

Series	Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN	1553-572X

Keywords

5-level
common-ground
solar PV
T-type inverter
voltage boosting

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@inproceedings{365a36a63ef8414b85a13175eb209d9c,

title = "A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications",

abstract = "In this paper, a novel 5-level inverter with common ac and dc ground is proposed for solar photovoltaic (PV) applications. The newly established common-ground-T-type (CGT-type) inverter is a single-stage topology restructured from the combination of a classical T-type inverter and a front-end three-level boost converter. Its distinctive topological structure can effectively eliminate the common mode voltage issue, prevent leakage currents, and ensure a continuous input current in PV systems. More importantly, it requires only two capacitors to realize an ac voltage which can be significantly boosted from a single dc source. A pulse width modulation (PWM) scheme is also established to undertake the following tasks simultaneously: charging of the boost inductor with a constant duty-cycle, and switching of two capacitors for 5-level ac voltage generation. The operation and feasibility of the proposed CGT-type inverter is analyzed and validated through simulation results.",

keywords = "5-level, common-ground, solar PV, T-type inverter, voltage boosting",

author = "Lee, {Sze Sing} and Yongheng Yang and Lee, {Kyo Beum}",

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Lee, SS, Yang, Y & Lee, KB 2020, A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications. in Proceedings - IECON 2020: 46th Annual Conference of the IEEE Industrial Electronics Society., 9255097, IEEE, Proceedings of the Annual Conference of the IEEE Industrial Electronics Society, pp. 1160-1164, 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020, Virtual, Singapore, Singapore, 18/10/2020. https://doi.org/10.1109/IECON43393.2020.9255097

A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications. / Lee, Sze Sing; Yang, Yongheng; Lee, Kyo Beum.
Proceedings - IECON 2020: 46th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2020. p. 1160-1164 9255097 (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications

AU - Lee, Sze Sing

AU - Yang, Yongheng

AU - Lee, Kyo Beum

PY - 2020/10/18

Y1 - 2020/10/18

N2 - In this paper, a novel 5-level inverter with common ac and dc ground is proposed for solar photovoltaic (PV) applications. The newly established common-ground-T-type (CGT-type) inverter is a single-stage topology restructured from the combination of a classical T-type inverter and a front-end three-level boost converter. Its distinctive topological structure can effectively eliminate the common mode voltage issue, prevent leakage currents, and ensure a continuous input current in PV systems. More importantly, it requires only two capacitors to realize an ac voltage which can be significantly boosted from a single dc source. A pulse width modulation (PWM) scheme is also established to undertake the following tasks simultaneously: charging of the boost inductor with a constant duty-cycle, and switching of two capacitors for 5-level ac voltage generation. The operation and feasibility of the proposed CGT-type inverter is analyzed and validated through simulation results.

AB - In this paper, a novel 5-level inverter with common ac and dc ground is proposed for solar photovoltaic (PV) applications. The newly established common-ground-T-type (CGT-type) inverter is a single-stage topology restructured from the combination of a classical T-type inverter and a front-end three-level boost converter. Its distinctive topological structure can effectively eliminate the common mode voltage issue, prevent leakage currents, and ensure a continuous input current in PV systems. More importantly, it requires only two capacitors to realize an ac voltage which can be significantly boosted from a single dc source. A pulse width modulation (PWM) scheme is also established to undertake the following tasks simultaneously: charging of the boost inductor with a constant duty-cycle, and switching of two capacitors for 5-level ac voltage generation. The operation and feasibility of the proposed CGT-type inverter is analyzed and validated through simulation results.

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ER -

A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications

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Keywords

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