Real time implementation of state estimation technique for a sensorless PMSM drive

This study proposes real-time simulation of a state estimation technique for a sensorless PMSM drive. The OPAL-RT simulator has been used to simulate the PMSM drive with complete circuit in a Software-in-loop (SIL) environment. Model reference adaptive system based state estimation technique has been used to estimate the speed and rotor position of the PMSM. PI controller has been used to control the speed of PMSM. The performance of the PMSM drive is analysed at different loading conditions. The comparison is made between the actual speed of the motor and estimated speed at different loading conditions.