Adaptive Controller Design for a Synchronous Reluctance Motor with Direct Torque Control

This paper proposes the design and implementation of adaptive controllers for a sensorless synchronous reluctance drive system with direct torque control. Two adaptive control algorithms, which include adaptive back-stepping control and model-reference adaptive control, are proposed to improve the performance of a sensorless direct-torque controlled synchronous reluctance motor drive system. A digital signal processor, TMS320-C30, is used to execute the rotor position estimating technique and the adaptive control algorithms. The system performs good transient responses, good load disturbance responses, and good tracking responses. Several experimental results validate the theoretical analysis. This paper proposes the advanced controller design for a sensorless synchronous reluctance motor drive with direct torque control.