Maximum Torque Control of Synchronous Reluctance Motor Speed Drive Based on the Lyapunov Function Stability Theorem

This paper presents a Lyapunov second method for synchronous reluctance motor (SynRM) drive system. We use the speed and current errors to form a Lyapunov function and the controller is designed by the method of the lyapunov and adaptive theory. The controller approach compensates the uncertainties which occurs in the control system. However, the uncertainty is difficult to obtain in practical applications. Therefore, the adaptive law is derived to adapt the value of the uncertainty in real-time. The proposed controller has a fast response and a good disturbance rejection capability. Finally, the experimental results show that the proposed controller is valid for the synchronous reluctance motor.