Abstract

This paper presents a new antiwindup (AW) speed controller for salient-pole Synchronous Machine (SM) with rotor field winding. The control method is based on antwindup methodology using a sliding mode observer for controller gain adaptation. All the system variables are expressed in a γδ estimated rotating reference frame. Firstly, the unwanted windup phenomena due to the physical limitations are eliminated choosing suitably the controller transfer function. Secondly the speed converges asymptotically leading the saturation element very fast towards to the linear area of the actuator using a relatively simple AW control method. Simulation results demonstrate the effectiveness of the proposed antiwindup speed control method using Matlab/Simulink facility.

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