Fault detection on multicell converter based on output voltage frequency analysis

Pablo Lezana, Ricardo Aguilera, José Rodríguez

Resultado de la investigación: Article

123 Citas (Scopus)

Resumen

Multilevel converters use a large amount of semiconductors, allowing the reconfigurate of the converter to work even on internal fault condition. This paper presents a method to detect faulty cells in a cascaded multicell converter requiring just one voltage measurement per output phase. The method is based on high-frequency harmonic analysis, using a dynamic prediction of their behavior, avoiding erroneous detection on transients while keeping the precision under real fault events. Once the faulty cell is detected, it can be bypassed allowing the converter to keep working according to previously reported techniques. Experimental results confirm accurate and fast fault detection, with a good rejection to normal operation transients.

Idioma originalEnglish
Páginas (desde-hasta)2275-2283
Número de páginas9
PublicaciónIEEE Transactions on Industrial Electronics
Volumen56
N.º6
DOI
EstadoPublished - 1 jul 2009

Huella dactilar

Fault detection
Harmonic analysis
Voltage measurement
Electric potential
Semiconductor materials

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

Citar esto

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Fault detection on multicell converter based on output voltage frequency analysis. / Lezana, Pablo; Aguilera, Ricardo; Rodríguez, José.

En: IEEE Transactions on Industrial Electronics, Vol. 56, N.º 6, 01.07.2009, p. 2275-2283.

Resultado de la investigación: Article

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AU - Aguilera, Ricardo

AU - Rodríguez, José

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AB - Multilevel converters use a large amount of semiconductors, allowing the reconfigurate of the converter to work even on internal fault condition. This paper presents a method to detect faulty cells in a cascaded multicell converter requiring just one voltage measurement per output phase. The method is based on high-frequency harmonic analysis, using a dynamic prediction of their behavior, avoiding erroneous detection on transients while keeping the precision under real fault events. Once the faulty cell is detected, it can be bypassed allowing the converter to keep working according to previously reported techniques. Experimental results confirm accurate and fast fault detection, with a good rejection to normal operation transients.

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