Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods

Ariya Sangwongwanich; Mateja Novak; Somboon Sangwongwanich; Frede Blaabjerg

doi:10.1109/APEC43599.2022.9773594

Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods

Ariya Sangwongwanich^*, Mateja Novak, Somboon Sangwongwanich, Frede Blaabjerg

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

9 Citationer (Scopus)

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Abstract

Pulse-width modulation (PWM) method plays an important role to ensure high efficiency and reliability of the three-level neutral-point-clamped (NPC) inverter. However, a comparison of the PWM methods in previous research has only considered power loss and reliability of power devices, while other reliability-critical components such as dc-link capacitors are not taken into account in the analysis. In this paper, the impact of PWM methods on the reliability of the dc-link capacitors in three-level NPC inverters is investigated by considering the capacitor power loss and their thermal stress. The evaluation results indicate that the PWM method which aims at minimizing the switching loss may introduce a significant power loss in the dc-link capacitors due to high amplitude of the low-frequency neutral-point (NP) voltage fluctuation. In that case, the thermal stress of the dc-link capacitors can be significantly increased, especially when the discontinuous modulation scheme is applied, affecting the reliability of the dc-link capacitors.

Originalsprog	Engelsk
Titel	Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC)
Antal sider	8
Udgivelsessted	Houston, TX, USA
Forlag	IEEE
Publikationsdato	mar. 2022
Sider	1804-1811
Artikelnummer	9773594
ISBN (Trykt)	978-1-6654-0689-5
ISBN (Elektronisk)	978-1-6654-0688-8
DOI	https://doi.org/10.1109/APEC43599.2022.9773594
Status	Udgivet - mar. 2022
Begivenhed	37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 - Houston, USA Varighed: 20 mar. 2022 → 24 mar. 2022

Konference

Konference	37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022
Land/Område	USA
By	Houston
Periode	20/03/2022 → 24/03/2022
Sponsor	IEEE Power Electronics Society (PELS), Industry Applications Society (IAS), Power Sources Manufacturers Association (PSMA)

Navn	I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN	1048-2334

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Publisher Copyright:
© 2022 IEEE.

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10.1109/APEC43599.2022.9773594

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REPEPS: REliable Power Electronic based Power System
Blaabjerg, F., Iannuzzo, F., Davari, P., Wang, H., Wang, X. & Yang, Y.
01/08/2017 → 01/12/2023
Projekter: Projekt › Forskning

Citationsformater

Sangwongwanich, Ariya ; Novak, Mateja ; Sangwongwanich, Somboon et al. / Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods. Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). Houston, TX, USA : IEEE, 2022. s. 1804-1811 (I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings).

@inproceedings{701a8fa3c5ed4b93809da0852c457a14,

title = "Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods",

abstract = "Pulse-width modulation (PWM) method plays an important role to ensure high efficiency and reliability of the three-level neutral-point-clamped (NPC) inverter. However, a comparison of the PWM methods in previous research has only considered power loss and reliability of power devices, while other reliability-critical components such as dc-link capacitors are not taken into account in the analysis. In this paper, the impact of PWM methods on the reliability of the dc-link capacitors in three-level NPC inverters is investigated by considering the capacitor power loss and their thermal stress. The evaluation results indicate that the PWM method which aims at minimizing the switching loss may introduce a significant power loss in the dc-link capacitors due to high amplitude of the low-frequency neutral-point (NP) voltage fluctuation. In that case, the thermal stress of the dc-link capacitors can be significantly increased, especially when the discontinuous modulation scheme is applied, affecting the reliability of the dc-link capacitors.",

keywords = "capacitors, power loss, pulse-width modulation (PWM), Reliability, three-level inverter",

author = "Ariya Sangwongwanich and Mateja Novak and Somboon Sangwongwanich and Frede Blaabjerg",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 ; Conference date: 20-03-2022 Through 24-03-2022",

year = "2022",

month = mar,

doi = "10.1109/APEC43599.2022.9773594",

language = "English",

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series = "I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings",

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Sangwongwanich, A , Novak, M, Sangwongwanich, S & Blaabjerg, F 2022, Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods. i Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC)., 9773594, IEEE, Houston, TX, USA, I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings, s. 1804-1811, 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022, Houston, USA, 20/03/2022. https://doi.org/10.1109/APEC43599.2022.9773594

Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods. / Sangwongwanich, Ariya ; Novak, Mateja; Sangwongwanich, Somboon et al.
Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). Houston, TX, USA: IEEE, 2022. s. 1804-1811 9773594 (I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings).

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

TY - GEN

T1 - Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods

AU - Sangwongwanich, Ariya

AU - Novak, Mateja

AU - Sangwongwanich, Somboon

AU - Blaabjerg, Frede

PY - 2022/3

Y1 - 2022/3

N2 - Pulse-width modulation (PWM) method plays an important role to ensure high efficiency and reliability of the three-level neutral-point-clamped (NPC) inverter. However, a comparison of the PWM methods in previous research has only considered power loss and reliability of power devices, while other reliability-critical components such as dc-link capacitors are not taken into account in the analysis. In this paper, the impact of PWM methods on the reliability of the dc-link capacitors in three-level NPC inverters is investigated by considering the capacitor power loss and their thermal stress. The evaluation results indicate that the PWM method which aims at minimizing the switching loss may introduce a significant power loss in the dc-link capacitors due to high amplitude of the low-frequency neutral-point (NP) voltage fluctuation. In that case, the thermal stress of the dc-link capacitors can be significantly increased, especially when the discontinuous modulation scheme is applied, affecting the reliability of the dc-link capacitors.

AB - Pulse-width modulation (PWM) method plays an important role to ensure high efficiency and reliability of the three-level neutral-point-clamped (NPC) inverter. However, a comparison of the PWM methods in previous research has only considered power loss and reliability of power devices, while other reliability-critical components such as dc-link capacitors are not taken into account in the analysis. In this paper, the impact of PWM methods on the reliability of the dc-link capacitors in three-level NPC inverters is investigated by considering the capacitor power loss and their thermal stress. The evaluation results indicate that the PWM method which aims at minimizing the switching loss may introduce a significant power loss in the dc-link capacitors due to high amplitude of the low-frequency neutral-point (NP) voltage fluctuation. In that case, the thermal stress of the dc-link capacitors can be significantly increased, especially when the discontinuous modulation scheme is applied, affecting the reliability of the dc-link capacitors.

KW - capacitors

KW - power loss

KW - pulse-width modulation (PWM)

KW - Reliability

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BT - Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC)

PB - IEEE

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T2 - 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022

Y2 - 20 March 2022 through 24 March 2022

ER -

Sangwongwanich A , Novak M, Sangwongwanich S, Blaabjerg F. Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods. I Proceeding of the 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). Houston, TX, USA: IEEE. 2022. s. 1804-1811. 9773594. (I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings). doi: 10.1109/APEC43599.2022.9773594

Reliability of DC-link Capacitors in Three-Level NPC Inverters under different PWM Methods

Abstract

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