Título
Partial discharge phenomena in converter and traction transformers: identification and reliability
Autor
CARLOS GUSTAVO AZCARRAGA RAMOS
Colaborador
ANDREA CAVALLINI (Director)
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
After the development of power electronics converters, the number of transformers subjected to nonsinusoidal
stresses (including DC) has increased in applications such as HVDC links and traction (electric
train power cars). The effects of non-sinusoidal voltages on transformer insulation have been investigated
by many researchers, but still now, there are some issues that must be understood.
Some of those issues are tackled in this Thesis, studying PD phenomena behavior in Kraft paper, pressboard
and mineral oil at different voltage conditions like AC, DC, AC+DC, notched AC and square waveforms.
From the point of view of converter transformers, it was found that the combined effect of AC and DC
voltages produces higher stresses in the pressboard that those that are present under pure DC voltages.
Fecha de publicación
2014
Tipo de publicación
Tesis de doctorado
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
application/pdf
Idioma
Inglés
Repositorio Orígen
Repositorio Institucional de Acceso Abierto de Información Científica, Tecnológica y de Innovación del INEEL
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