Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors

Ram Krishan Maheshwari; Stig Munk-Nielsen; Sergio  Busquets-Monge

doi:10.1109/ECCE.2011.6064044

Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors

Ram Krishan Maheshwari, Stig Munk-Nielsen, Sergio Busquets-Monge

AAU Energi

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

18 Citationer (Scopus)

Abstract

A Neutral-Point-Clamped (NPC) three-level inverter with small DC-link capacitors is presented in this paper. This inverter requires zero average neutral-point current for stable neutral-point potential. A simple carrier based modulation strategy is proposed for achieving zero average neutral-point current. A new simplified model of the neutral-point voltage dynamics is derived for the proposed modulation strategy. This model shows that the neutral-point current is proportional to the power drawn from the converter and it enables the use of well established classical control theory for neutral-point voltage controller design. A PI controller is used for neutral-point voltage balance. The
implementation of the proposed modulation strategy and controller is simple. It does not require any information about the output phase currents. The controller is implemented in a 7.5 kW induction machine based drive with only 14 μF DC-link capacitors. A fast and stable performance of the neutral-point voltage controller is achieved and verified by experiments.

Originalsprog	Engelsk
Titel	Proceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)
Antal sider	8
Forlag	IEEE Press
Publikationsdato	2011
Sider	2087-2094
ISBN (Trykt)	978-1-4577-0542-7
DOI	https://doi.org/10.1109/ECCE.2011.6064044
Status	Udgivet - 2011
Begivenhed	3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011) - Phoenix, Arizona, USA Varighed: 17 sep. 2011 → 22 sep. 2011

Konference

Konference	3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)
Land/Område	USA
By	Phoenix, Arizona
Periode	17/09/2011 → 22/09/2011

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10.1109/ECCE.2011.6064044

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6064044

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Citationsformater

@inproceedings{a7f773b3c46141c49763ed1150a410bd,

title = "Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors",

abstract = "A Neutral-Point-Clamped (NPC) three-level inverter with small DC-link capacitors is presented in this paper. This inverter requires zero average neutral-point current for stable neutral-point potential. A simple carrier based modulation strategy is proposed for achieving zero average neutral-point current. A new simplified model of the neutral-point voltage dynamics is derived for the proposed modulation strategy. This model shows that the neutral-point current is proportional to the power drawn from the converter and it enables the use of well established classical control theory for neutral-point voltage controller design. A PI controller is used for neutral-point voltage balance. Theimplementation of the proposed modulation strategy and controller is simple. It does not require any information about the output phase currents. The controller is implemented in a 7.5 kW induction machine based drive with only 14 μF DC-link capacitors. A fast and stable performance of the neutral-point voltage controller is achieved and verified by experiments.",

author = "Maheshwari, {Ram Krishan} and Stig Munk-Nielsen and Sergio Busquets-Monge",

year = "2011",

doi = "10.1109/ECCE.2011.6064044",

language = "English",

isbn = "978-1-4577-0542-7 ",

pages = "2087--2094 ",

booktitle = "Proceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)",

publisher = "IEEE Press",

note = "3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011) ; Conference date: 17-09-2011 Through 22-09-2011",

}

Maheshwari, RK, Munk-Nielsen, S & Busquets-Monge, S 2011, Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors. i Proceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011). IEEE Press, s. 2087-2094 , 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011), Phoenix, Arizona, USA, 17/09/2011. https://doi.org/10.1109/ECCE.2011.6064044

Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors. / Maheshwari, Ram Krishan; Munk-Nielsen, Stig; Busquets-Monge, Sergio .
Proceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011). IEEE Press, 2011. s. 2087-2094 .

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

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N2 - A Neutral-Point-Clamped (NPC) three-level inverter with small DC-link capacitors is presented in this paper. This inverter requires zero average neutral-point current for stable neutral-point potential. A simple carrier based modulation strategy is proposed for achieving zero average neutral-point current. A new simplified model of the neutral-point voltage dynamics is derived for the proposed modulation strategy. This model shows that the neutral-point current is proportional to the power drawn from the converter and it enables the use of well established classical control theory for neutral-point voltage controller design. A PI controller is used for neutral-point voltage balance. Theimplementation of the proposed modulation strategy and controller is simple. It does not require any information about the output phase currents. The controller is implemented in a 7.5 kW induction machine based drive with only 14 μF DC-link capacitors. A fast and stable performance of the neutral-point voltage controller is achieved and verified by experiments.

AB - A Neutral-Point-Clamped (NPC) three-level inverter with small DC-link capacitors is presented in this paper. This inverter requires zero average neutral-point current for stable neutral-point potential. A simple carrier based modulation strategy is proposed for achieving zero average neutral-point current. A new simplified model of the neutral-point voltage dynamics is derived for the proposed modulation strategy. This model shows that the neutral-point current is proportional to the power drawn from the converter and it enables the use of well established classical control theory for neutral-point voltage controller design. A PI controller is used for neutral-point voltage balance. Theimplementation of the proposed modulation strategy and controller is simple. It does not require any information about the output phase currents. The controller is implemented in a 7.5 kW induction machine based drive with only 14 μF DC-link capacitors. A fast and stable performance of the neutral-point voltage controller is achieved and verified by experiments.

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M3 - Article in proceeding

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BT - Proceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)

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Neutral-point current modeling and control for Neutral-Point Clamped three-level converter drive with small DC-link capacitors

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