Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter

Harith R. Wickramasinghe; Georgios Konstantinou; Josep Pou; Vassilios G. Agelidis

doi:10.1109/IECON.2016.7793990

Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter

Harith R. Wickramasinghe, Georgios Konstantinou, Josep Pou, Vassilios G. Agelidis

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

21 Citations (Scopus)

Abstract

The alternate arm converter (AAC) is a multilevel converter of the same family as the modular multilevel converter (MMC). Contrary to the MMC, the AAC offers dc-fault tolerant capabilities but requires complex submodule (SM) capacitor voltage/energy regulation and circulating current control. Such control is also limited due to the small overlap period where both arms conduct and energy between the arms can be exchanged. This paper develops a double-band hysteresis-based circulating current control strategy by introducing an asymmetric overlap period control of the director switches (DSs). The proposed controller ensures zero-current switching operation of the DSs, and increases the flexibility of SM capacitor voltage regulation owing to the asymmetric overlap period. It improves the performance of current control and energy regulation for the AAC at both near sweet-spot and non sweet-spot operation without disturbing the output voltages and currents. The performance and effectiveness of the proposed controller are illustrated through simulations on MATLAB-Simulink and PLECS.

Original language	English
Title of host publication	Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society
Publisher	IEEE Computer Society
Pages	2526-2531
Number of pages	6
ISBN (Electronic)	9781509034741
DOIs	https://doi.org/10.1109/IECON.2016.7793990
Publication status	Published - Dec 21 2016
Externally published	Yes
Event	42nd Conference of the Industrial Electronics Society, IECON 2016 - Florence, Italy Duration: Oct 24 2016 → Oct 27 2016

Publication series

Name	IECON Proceedings (Industrial Electronics Conference)

Conference

Conference	42nd Conference of the Industrial Electronics Society, IECON 2016
Country/Territory	Italy
City	Florence
Period	10/24/16 → 10/27/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

ASJC Scopus Subject Areas

Control and Systems Engineering
Electrical and Electronic Engineering

Keywords

Alternate arm converter
Asymmetric overlap period
Multilevel converters
Zero-current switching

Access to Document

10.1109/IECON.2016.7793990

Cite this

Wickramasinghe, H. R., Konstantinou, G., Pou, J., & Agelidis, V. G. (2016). Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter. In Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society (pp. 2526-2531). Article 7793990 (IECON Proceedings (Industrial Electronics Conference)). IEEE Computer Society. https://doi.org/10.1109/IECON.2016.7793990

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title = "Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter",

abstract = "The alternate arm converter (AAC) is a multilevel converter of the same family as the modular multilevel converter (MMC). Contrary to the MMC, the AAC offers dc-fault tolerant capabilities but requires complex submodule (SM) capacitor voltage/energy regulation and circulating current control. Such control is also limited due to the small overlap period where both arms conduct and energy between the arms can be exchanged. This paper develops a double-band hysteresis-based circulating current control strategy by introducing an asymmetric overlap period control of the director switches (DSs). The proposed controller ensures zero-current switching operation of the DSs, and increases the flexibility of SM capacitor voltage regulation owing to the asymmetric overlap period. It improves the performance of current control and energy regulation for the AAC at both near sweet-spot and non sweet-spot operation without disturbing the output voltages and currents. The performance and effectiveness of the proposed controller are illustrated through simulations on MATLAB-Simulink and PLECS.",

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Wickramasinghe, HR, Konstantinou, G, Pou, J & Agelidis, VG 2016, Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter. in Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society., 7793990, IECON Proceedings (Industrial Electronics Conference), IEEE Computer Society, pp. 2526-2531, 42nd Conference of the Industrial Electronics Society, IECON 2016, Florence, Italy, 10/24/16. https://doi.org/10.1109/IECON.2016.7793990

Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter. / Wickramasinghe, Harith R.; Konstantinou, Georgios; Pou, Josep et al.
Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society. IEEE Computer Society, 2016. p. 2526-2531 7793990 (IECON Proceedings (Industrial Electronics Conference)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Pou, Josep

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PY - 2016/12/21

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N2 - The alternate arm converter (AAC) is a multilevel converter of the same family as the modular multilevel converter (MMC). Contrary to the MMC, the AAC offers dc-fault tolerant capabilities but requires complex submodule (SM) capacitor voltage/energy regulation and circulating current control. Such control is also limited due to the small overlap period where both arms conduct and energy between the arms can be exchanged. This paper develops a double-band hysteresis-based circulating current control strategy by introducing an asymmetric overlap period control of the director switches (DSs). The proposed controller ensures zero-current switching operation of the DSs, and increases the flexibility of SM capacitor voltage regulation owing to the asymmetric overlap period. It improves the performance of current control and energy regulation for the AAC at both near sweet-spot and non sweet-spot operation without disturbing the output voltages and currents. The performance and effectiveness of the proposed controller are illustrated through simulations on MATLAB-Simulink and PLECS.

AB - The alternate arm converter (AAC) is a multilevel converter of the same family as the modular multilevel converter (MMC). Contrary to the MMC, the AAC offers dc-fault tolerant capabilities but requires complex submodule (SM) capacitor voltage/energy regulation and circulating current control. Such control is also limited due to the small overlap period where both arms conduct and energy between the arms can be exchanged. This paper develops a double-band hysteresis-based circulating current control strategy by introducing an asymmetric overlap period control of the director switches (DSs). The proposed controller ensures zero-current switching operation of the DSs, and increases the flexibility of SM capacitor voltage regulation owing to the asymmetric overlap period. It improves the performance of current control and energy regulation for the AAC at both near sweet-spot and non sweet-spot operation without disturbing the output voltages and currents. The performance and effectiveness of the proposed controller are illustrated through simulations on MATLAB-Simulink and PLECS.

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Wickramasinghe HR, Konstantinou G, Pou J, Agelidis VG. Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter. In Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society. IEEE Computer Society. 2016. p. 2526-2531. 7793990. (IECON Proceedings (Industrial Electronics Conference)). doi: 10.1109/IECON.2016.7793990

Asymmetric overlap and hysteresis current control of zero-current switched alternate arm converter

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

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