EV-Permanent Magnet Synchronous Motor Control Strategy Evaluation Based on Digital Twin Concept

Digital twins (DTs) are playing a vital role nowadays in the EV industry. Since their inception, DTs have contributed significantly to the research development process. PMSMs are, are widely used in electric vehicles (EVs) due to their simple structure, good heat radiation capability, and high efficiency. In this paper, the performance of an EV-PMSM control strategy is evaluated based on DT concept. General principles of DT technology were discussed. The performance control model of PMSM was derived. Field-oriented control (FOC) and direct torque control (DTC) strategies for EVPMSM were discussed and compared. The PMSM DT architecture including physical, virtual, and service unit (data exchange) was proposed. EV-PMSM DT primarily functioned to evaluate the motor control algorithm. The motor's actual speed was compared to the estimated one by its DT. The obtained results showed the effectiveness of the proposed DT to estimate the motor speed which would be used to develop a speed estimator to optimize the motor control strategy.