2024
DOI: 10.1002/cta.4057
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Capacitance health monitoring in the modular multilevel converter using a method with minimum number of sensors and computational burden

Mahsa Zoraghi‐Jedi,
Seyed‐Masoud Barakati,
Mohsen Rahmani‐Haredasht
et al.

Abstract: SummaryThis paper proposes a method for capacitance health monitoring (CHM) of submodule capacitors in modular multilevel converters (MMCs) that uses a reduced number of voltage sensors. In the proposed method, the MMC arms are divided into some groups of submodules and one voltage sensor is used for each group. In addition, a capacitor voltage estimation technique with minimal computational complexity is used to determine the capacitor voltage. The ratio of the estimated to measured capacitor voltage during p… Show more

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