A Reference Submodule Based Capacitor Condition Monitoring Method for Modular Multilevel Converters

Zhongxu Wang; Yi Zhang; Huai Wang; Frede Blaabjerg

doi:10.1109/TPEL.2019.2961712

A Reference Submodule Based Capacitor Condition Monitoring Method for Modular Multilevel Converters

Zhongxu Wang, Yi Zhang, Huai Wang, Frede Blaabjerg

Research output: Contribution to journal › Journal article › Research › peer-review

26 Citations (Scopus)

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Abstract

This letter proposes a novel capacitor condition monitoring method for modular multilevel converters (MMCs) based on reference submodules (SMs). It significantly enhances the capacitor monitoring accuracy by making full use of the SM voltage sensor measurement range. Accuracy comparison between the existing method and the proposed method is conducted to quantify the improvement of accuracy. Moreover, its operation principle and practical implementation considerations are presented. Finally, a three-phase MMC platform is built to experimentally verify the effectiveness of the proposed method.

Original language	English
Article number	8939456
Journal	IEEE Transactions on Power Electronics
Volume	35
Issue number	7
Pages (from-to)	6691-6696
Number of pages	6
ISSN	0885-8993
DOIs	https://doi.org/10.1109/TPEL.2019.2961712
Publication status	Published - Jul 2020

Keywords

Capacitor
Condition Monitoring (CM)
Modular Multilevel Converters (MMCs)

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10.1109/TPEL.2019.2961712

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title = "A Reference Submodule Based Capacitor Condition Monitoring Method for Modular Multilevel Converters",

abstract = "This letter proposes a novel capacitor condition monitoring method for modular multilevel converters (MMCs) based on reference submodules (SMs). It significantly enhances the capacitor monitoring accuracy by making full use of the SM voltage sensor measurement range. Accuracy comparison between the existing method and the proposed method is conducted to quantify the improvement of accuracy. Moreover, its operation principle and practical implementation considerations are presented. Finally, a three-phase MMC platform is built to experimentally verify the effectiveness of the proposed method.",

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AU - Wang, Zhongxu

AU - Zhang, Yi

AU - Wang, Huai

AU - Blaabjerg, Frede

PY - 2020/7

Y1 - 2020/7

N2 - This letter proposes a novel capacitor condition monitoring method for modular multilevel converters (MMCs) based on reference submodules (SMs). It significantly enhances the capacitor monitoring accuracy by making full use of the SM voltage sensor measurement range. Accuracy comparison between the existing method and the proposed method is conducted to quantify the improvement of accuracy. Moreover, its operation principle and practical implementation considerations are presented. Finally, a three-phase MMC platform is built to experimentally verify the effectiveness of the proposed method.

AB - This letter proposes a novel capacitor condition monitoring method for modular multilevel converters (MMCs) based on reference submodules (SMs). It significantly enhances the capacitor monitoring accuracy by making full use of the SM voltage sensor measurement range. Accuracy comparison between the existing method and the proposed method is conducted to quantify the improvement of accuracy. Moreover, its operation principle and practical implementation considerations are presented. Finally, a three-phase MMC platform is built to experimentally verify the effectiveness of the proposed method.

KW - Capacitor

KW - Condition Monitoring (CM)

KW - Modular Multilevel Converters (MMCs)

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U2 - 10.1109/TPEL.2019.2961712

DO - 10.1109/TPEL.2019.2961712

M3 - Journal article

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EP - 6696

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 7

M1 - 8939456

ER -

A Reference Submodule Based Capacitor Condition Monitoring Method for Modular Multilevel Converters

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Keywords

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