Extended Model of Chopper Cells for Open Circuit Fault Detection in Modular Multilevel Cascade Converters using Sliding Mode Observers

Thomas Kreppel, Felix Rojas, Christoph M. Hackl, Oliver Kalmbach, Matias Diaz, Gustavo Gatica

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Fault detection and isolation (FDI) strategies can be implemented to increase reliability and prevent faults of power switches from disrupting converter operation. This is especially important for Modular Multilevel Cascade Converters (MMCC) due to the high number of switches employed in this topology. This paper proposes a new model for chopper cells, the core component of an MMCC. Unlike reported methods, the proposed model enables open-circuit fault detection and excellent tracking of cluster currents using a Sliding Mode Observer (SMO) under normal and faulty operation. The model has been successfully validated to detect faulty operation by using PLECS simulations in a BTB MMCC-DSCC.

Original languageEnglish
Title of host publication2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages487-493
Number of pages7
ISBN (Electronic)9781728169903
DOIs
Publication statusPublished - 28 Sep 2020
Event11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 - Dubrovnik, Croatia
Duration: 28 Sep 20201 Oct 2020

Publication series

Name2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020

Conference

Conference11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
Country/TerritoryCroatia
CityDubrovnik
Period28/09/201/10/20

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Control and Optimization

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