Alternative Generation of the Output Voltage Waveform in an Asymmetric Transformer-Based Cascaded Multilevel Inverter under Fault Conditions

Mauricio A. Inostroza-Osses, Oswaldo López-Santos (), Yeison A. Aldana-Rodríguez and Manuel G. Forero
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Mauricio A. Inostroza-Osses: Facultad de Ingeniería y Ciencias, Universidad de la Frontera, Avenida Francisco Salazar 01145, Temuco 4780000, Chile
Oswaldo López-Santos: Departament d’Enginyeria Electrònica Elèctrica i Automàtica (ETSE), Universitat Rovira i Virgili, 43007 Tarragona, Spain
Yeison A. Aldana-Rodríguez: Semillero Lún, Grupo D+Tec, Facultad de ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia
Manuel G. Forero: Semillero Lún, Grupo D+Tec, Facultad de ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia

Mathematics, 2022, vol. 10, issue 19, 1-14

Abstract: This paper introduces a method for the reconfiguration of a transformer-based cascaded multilevel inverter (CT-MLI), which allows the use of alternative switching patterns when individual inverter stages cease to operate as a result of a failure in the circuit switches. Different possibilities of reconfiguration of the inverter stages to provide the output voltage signal are analyzed and optimal switching patterns are determined. The results obtained from the simulation in the PSIM software are provided to validate the proposal.

Keywords: multilevel inverters; transformer-based cascade multilevel inverters; fault tolerant operation; automatic reconfiguration (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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