Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters

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

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12 Citationer (Scopus)
91 Downloads (Pure)

Abstrakt

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.
OriginalsprogEngelsk
Artikelnummer8718539
TidsskriftIEEE Transactions on Power Electronics
Vol/bind34
Udgave nummer11
Sider (fra-til)10403 - 10407
Antal sider5
ISSN0885-8993
DOI
StatusUdgivet - nov. 2019

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