Parameters Identification of the Induction Machine Using a Non Linear Parametric Technique

The aim of this paper is to determine the electrical parameters of induction machine experimentally by using a non linear parametric identification technique. This technique is based on the output error method and the Levenberg Marquardt algorithm, which guaranties the stability of the algorithm far from the optimum and a good convergence speed near the optimum. To assure the identification algorithm convergence, a specific excitation is added on the voltages which feed the induction machine instead of the SBPA noise signal. This excitation should not disturb the normal running of the motor and must be sufficient to assure a good convergence of the identification algorithm.