Identification par les invariants d’une machine asynchrone à double cage

Abstract

In this paper, an identification of the electrical parameters of an asynchronous machine double cage is proposed by using invariants which are function of primitive parameters. Contrary to primitive parameters, the use of these invariants leads to a system of equations which accepts solutions. Two types of algorithms are differentiated for the numerical resolution of these systems of not linear equations. Two types of algorithms are differentiated for the numerical resolution of these systems of not linear equations. A first type is based on the resolution of a system of not linear equations in n unknowns by using a resolution method as that of Newton-Raphson. A second type is based on the minimisation of the square of system functions by a minimisation method as that of gradient or of Levenberg-Marquardt.