Exact linearization of an induction machine with rotoric flux orientation

In this paper, we present the linearization control of an asynchronous machine. It allows decoupling and linearization of the system without including flux orientation. This non-linear control (NLC) applied to the asynchronous machine breaks up the system into two linear and independent mono systems. The speed and the Id current controls are carried out by traditional regulators PI. A qualitative analysis of the evolution of the principal variables describing the behaviour of the global system (IM-control) and its robustness is developed by several tests of digital simulation in the final stage. Numerous tests have been performed under Simulink/Matlab to show the control system performances. In recent years, asynchronous motors are more commonly used in the control processes that require different speeds and positions. The application of techniques of modern automation in electric machines control provides obtaining very high performances. The research in respective field is focused on the application of these techniques in the machine control.