Adaptive controller design for a synchronous reluctance drive considering saturation

This paper proposes the adaptive controller design for maximum torque control of a synchronous reluctance drive system in which the saturation effect is considered. First, the saturation effect of the d-axis and the q-axis inductances is discussed and modelled. Next, a systematic maximum torque control method is developed under the model including saturation. After that, an adaptive controller is proposed to improve the dynamic responses. Both the closed-loop adjustable speed control system and closed-loop position control system are implemented. A 32 bit DSP, TMS 320-C30, is used to execute the speed and position control algorithms. As a result, the hardware circuit is quite simple. Experimental results show that the system has satisfactory performance, including transient responses, load disturbance responses, and tracking responses. The measured results can validate the correctness of the theoretical analysis. This paper presents a new control method for a synchronous reluctance motor.