Performance analysis of a simplified indirect field oriented control algorithm for small power induction actuators

The aim of this paper is to study the performance of a simplified indirect field oriented control algorithm suited for small power induction actuators. The main particularities of the control strategy under study are the use of a disturbance observer in the speed and position control loops, and the absence of any current measurement. The good performance of the proposed control strategy, particularly with regard to the flux control sensitivity to parameter uncertainties, is shown by theoretical results and digital simulations, and has been confirmed by experiments on a laboratory prototype.