In embarked networks: aeronautics, naval ..., the power is not infinite contrary to the classic energy distribution network. This paper deals with a general approach of embarked network modeling. The model built leads to a simulator which allows predicting network's dynamic behavior in both trasient and steady states. It allows highlighting various phenomena which can appear in the network (desynchronization, ...).Moreover, in view of voltage and frequency control a second modeling approach based on identification is used to synthesize voltage and frequency regulators. LOB 2005 -I2'eeeden ISBN P.1 Silludadon UW colw-ol of clomie'd ..Wp lic'-moll BLL-L rvcldli DEl 2005 -L)i--;c11i ISBN: 90-75815-08-5 1>q1
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.
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