A novel method for identification of parameters in induction machines: Experiments and simulations

Determining the elements of the equivalent scheme of an induction machine is not trivial. Knowing that the values of the parameters change with the operating point, we can only find an optimal set which is suitable to describe the dynamic behaviour of the machine. The calculations of the vector elements of the parameters are made using optimization methods. Some of these slowly converge while others diverge if the initial vector is far from the solution. Marquardt's method does not present these disadvantages. Taking into account some realistic constraints, we apply this method here in order to find electrical and mechanical parameters during the starting phase of an induction machine. Results of experiments and simulations are favourably compared.