Sensorless Control of Synchronous Reluctance Motors Based on MRAS

In sensorless control of Synchronous Reluctance Motor (SynRM), the traditional Model Reference Adaptive System (MRAS) linear compensator is limited by motor parameters, which results in poor control effect. To overcome this limitation and achieve better position sensorless vector control of SynRM, a new linear compensator has been designed. Additionally, a new speed adaptive law has been derived based on Popov's theory of superstability, and a new MRAS has been designed. The designed MRAS was verified through simulation and experiment. The results demonstrate that the system is both feasible and effective, accurately identifying motor speed and rotor position information with good performance.