Modelling by generalised equivalent circuits and identification of electric machines over an extended frequency domain

This article presents the current state of research in the area of modelling of the dynamic behaviour of AC machines over an extended passband. The need to develop such models is evidenced in the area of transmission networks and that of the design and control of motors with electronic commutation. The structure, identification and implementation of specific models are presented, together with the results obtained on various devices in different fields of application. The prospects of development of research in the area are shown, and in particular, taking into account the saturation and the use of experimentation simulated by calculation of fields.