Date of Publication :15th November 2024

Abstract: Electric vehicles (EVs) are promoting sustainable transportation as a reduction in fossil fuel reliance. Permanent Magnet Synchronous Motor (PMSM) is an integral part of any EV's propulsion mechanism as it offers excellent efficiency, high power density, and torque competency. Sensor-based control schemes for traditional PMSMs increase cost and reduce system lifetime when employed in harsh environments. The limitations cited above are reversed using SMO and MRAS for position estimation in rotor for sensorless control. Although SMO is robust and efficient with the chattering problem affecting smoothness, MRAS provides higher accuracy and adaptability especially at steady states at the cost of increased computational power. This paper compares the SMO and MRAS methods for controlling PMSMs in EV applications.

Reference :