Influence of the frequential identification tests on the induction machine modelling

Institut de Recherche en Électrotechnique et Électronique de Nantes Atlantique (IREENA), 37 bd de l'université, BP 406, 44602, Saint-Nazaire, France

Corresponding author: patrick.guerin@univ-nantes.fr

Received: 22 July 2008
Revised: 5 February 2009
Accepted: 30 March 2009
Published online: 5 June 2009

Abstract

An electric network is constituted by generators providing power to various loads. The induction machine is the most common motor in the industrial applications because of its simplicity of construction, its reliability and its low cost. It allows the constant speed applications when it is directly supplied by the network and variable speed ones with the use of power converters. These speed drives induce important harmonic perturbations in the power system and in the motor side. In this context, we are interested by the frequential modelling of the induction machine in order to simulate the line current with its harmonic components. In order to use the induction machine models, it is necessary to identify their parameters and therefore realizing specific and sufficiently informative tests. Several tests of identification are presented in the literature; their differences and their relevance have not been discussed. This study deals with the realization and the comparison of several types of frequential tests (constant voltage, constant V/f, injection of DC current) for induction machine models identification. The comparison of the simulation results with the experimental measurements allows electing the most representative of the induction machine behaviour.