Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters

Hanyu Wang; Huai Wang; Zhongxu Wang; Yi Zhang; Xuejun Pei; Yong Kang

doi:10.1109/TPEL.2019.2917937

Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters

Hanyu Wang, Huai Wang, Zhongxu Wang, Yi Zhang, Xuejun Pei, Yong Kang

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

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Abstract

This letter proposes a method for the condition monitoring of submodule (SM) capacitors in modular multilevel converters (MMCs) without additional circuitry or computationally heavy algorithm. The proposed method leverages the discharging curve of SM capacitors in connection with the parallel bleeding resistors. It is independent of the MMC control and modulation schemes. Moreover, it potentially does not require thermal and load-related calibration for capacitor degradation monitoring. The principle, case study, and proof of concept of the proposed method are presented.

Original language	English
Article number	8718539
Journal	IEEE Transactions on Power Electronics
Volume	34
Issue number	11
Pages (from-to)	10403 - 10407
Number of pages	5
ISSN	0885-8993
DOIs	https://doi.org/10.1109/TPEL.2019.2917937
Publication status	Published - Nov 2019

Keywords

Capacitor
Condition monitoring
Discharging
Modular multilevel converter (MMC)
Reliability
discharging
modular multilevel converter (MMC)
reliability
condition monitoring

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10.1109/TPEL.2019.2917937

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title = "Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters",

abstract = "This letter proposes a method for the condition monitoring of submodule (SM) capacitors in modular multilevel converters (MMCs) without additional circuitry or computationally heavy algorithm. The proposed method leverages the discharging curve of SM capacitors in connection with the parallel bleeding resistors. It is independent of the MMC control and modulation schemes. Moreover, it potentially does not require thermal and load-related calibration for capacitor degradation monitoring. The principle, case study, and proof of concept of the proposed method are presented.",

keywords = "Capacitor, Condition monitoring, Discharging, Modular multilevel converter (MMC), Reliability, discharging, modular multilevel converter (MMC), reliability, condition monitoring",

author = "Hanyu Wang and Huai Wang and Zhongxu Wang and Yi Zhang and Xuejun Pei and Yong Kang",

year = "2019",

month = nov,

doi = "10.1109/TPEL.2019.2917937",

language = "English",

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T1 - Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters

AU - Wang, Hanyu

AU - Wang, Huai

AU - Wang, Zhongxu

AU - Zhang, Yi

AU - Pei, Xuejun

AU - Kang, Yong

PY - 2019/11

Y1 - 2019/11

N2 - This letter proposes a method for the condition monitoring of submodule (SM) capacitors in modular multilevel converters (MMCs) without additional circuitry or computationally heavy algorithm. The proposed method leverages the discharging curve of SM capacitors in connection with the parallel bleeding resistors. It is independent of the MMC control and modulation schemes. Moreover, it potentially does not require thermal and load-related calibration for capacitor degradation monitoring. The principle, case study, and proof of concept of the proposed method are presented.

AB - This letter proposes a method for the condition monitoring of submodule (SM) capacitors in modular multilevel converters (MMCs) without additional circuitry or computationally heavy algorithm. The proposed method leverages the discharging curve of SM capacitors in connection with the parallel bleeding resistors. It is independent of the MMC control and modulation schemes. Moreover, it potentially does not require thermal and load-related calibration for capacitor degradation monitoring. The principle, case study, and proof of concept of the proposed method are presented.

KW - Capacitor

KW - Condition monitoring

KW - Discharging

KW - Modular multilevel converter (MMC)

KW - Reliability

KW - discharging

KW - modular multilevel converter (MMC)

KW - reliability

KW - condition monitoring

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U2 - 10.1109/TPEL.2019.2917937

DO - 10.1109/TPEL.2019.2917937

M3 - Journal article

SN - 0885-8993

VL - 34

SP - 10403

EP - 10407

JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 11

M1 - 8718539

ER -

Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters

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Mission Profile Based Control and Reliability Improvement Strategies of Modular Multilevel Converters

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