A new scheme for monitoring submodule capacitance in modular multilevel converter

O. Abushafa, S. Gadoue, M. Dahidah, D. Atkinson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper employs a Kalman filter (KF) algorithm to estimate the capacitance of submodule (SM) capacitors in modular multilevel converters (MMCs). The proposed method can be used in the health condition monitoring technique of the capacitors. This proposed scheme estimates the capacitance of each individual capacitor from data of arm current and the corresponding voltage across the targeted capacitor. The arm current is used to calculate the capacitor current from the upper state of the SM switch. The proposed method has shown very good performance under normal operating conditions. The effectiveness of the proposed technique is validated via a MATLAB simulation analysis of a single-phase four-level MMC.

Original languageEnglish
Title of host publication8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)
PublisherIET
ISBN (Print)978-1-78561-188-9
DOIs
Publication statusPublished - 21 Apr 2016
Event8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016 - Glasgow, United Kingdom
Duration: 19 Apr 201621 Apr 2016

Conference

Conference8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016
CountryUnited Kingdom
CityGlasgow
Period19/04/1621/04/16

Keywords

  • Kalman filter
  • Modular multilevel converter
  • PWM
  • Voltage balancing control

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    Abushafa, O., Gadoue, S., Dahidah, M., & Atkinson, D. (2016). A new scheme for monitoring submodule capacitance in modular multilevel converter. In 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) IET. https://doi.org/10.1049/cp.2016.0369