Expansion Switching Law Based Sliding Mode Applied on a Three-Phase Permanent Magnet Synchronous Machine

This paper focuses on an expansion switching-law based sliding mode control (SMC) for a three-phase permanent magnet synchronous machine (PMSM). A various conventional techniques are suffering from the sensitivity of PMSM parameters, including stator resistance, stator inductance and inertia value, and are inoperative towards the nonlinearity of electromagnetic torque, in addition to the imperfect performance characteristics of the motor. To overwhelm all these problems and to optimize the performance of the speed and current loop of the PMSM model, a control system based on the expansion switching-law based sliding control is designed. The results achieved through the simulation demonstrate the applicability of developed SMC to provide robust control of the studied PMSM with higher performance compared to the classical SMC.