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Signal based approaches to fault detection in electrical drives

Published online by Cambridge University Press:  15 July 1998

R. Peuget*
Affiliation:
Laboratoire d'Électrotechnique de Grenoble (UMR 5529 INPG.UJF-CNRS), ENSIEG, BP 46, 38402 Saint-Martin-d'Hères Cedex, France
J. P. Rognon
Affiliation:
Laboratoire d'Électrotechnique de Grenoble (UMR 5529 INPG.UJF-CNRS), ENSIEG, BP 46, 38402 Saint-Martin-d'Hères Cedex, France
N. Martin
Affiliation:
Centre Étude des Phénomènes Aléatoires et Géophysiques, ENSIEG BP 46, 38402 Saint-Martin-d'Hères Cedex, France
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Abstract

This paper presents a signal based approach to detect PWM inverter faults and motor unbalances in electrical drives. A diagnostic system which uses the control variables of the drive and the current measurements is presented. It is based on frequency analysis and on the energetic characterization of these variables in the PWM frequency domain. These method very simple to implement in real time have been successfully applied to an experimental system.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 1998

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