Optimisation of overvoltage limiters for IGBT inverters

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 1995

Autores

Carvalho, A (Autor) FEUP; Martins, P (Autor) Outra; Araujo, A (Autor) FEUP

Ata de Conferência Internacional

Título: PROCEEDINGS OF THE 1995 IEEE IECON - 21ST INTERNATIONAL CONFERENCE ON INDUSTRIAL ELECTRONICS, CONTROL, AND INSTRUMENTATION, VOLS 1 AND 2

Páginas: 235-239

1995 IEEE 21st International Conference on Industrial Electronics, Control, and Instrumentation

ORLANDO, FL, NOV 06-10, 1995

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 1 Citação

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

ID Authenticus: P-001-HZE

Abstract (EN): The short circuit clearance in IGBT based power converters must be done with gate control such that the maximum current and voltage ratings are not exceeded. Conventional drives, using conventional off commutation circuit, usually react fastly to the fault with current commutation time optimised for the normal working conditions of the converter. For inverters in the power range of several tens of kVA the physical arrangement of the semiconductors does not allow to continuously reduce the leakage inductance. So this fast commutation time diverts almost all the short circuit current to limiter capacitor causing its overdimensioning, derating the commutation frequency. If the short circuit current is shared between the limiter and the power semiconductor the overvoltage may be reduced enabling the use of a smaller capacitor that benefits the duties and working frequency. This paper presents the design and operation characteristics of a drive circuit ruling these characteristics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5