Research on Drive control system of SIC MOSFET for electric Vehicle based on integral sliding mode

Based on the application of silicon carbide devices in the drive control system of electric vehicles, this paper deeply studies the drive control method of permanent magnet synchronous motor based on integral sliding mode. Firstly, the mathematical model of permanent magnet synchronous motor is established, and a vector control system for electric vehicle based on improved anti saturation integral sliding mode speed limiting controller is proposed, which reduces the overshoot of the system, improves the response speed and robustness of the system. Then, by analyzing the switching process of SiC power devices, an integral sliding mode deadbeat current predictive control strategy based on asymmetric dead time adaptive optimization algorithm is proposed to suppress parameter disturbance and current distortion. Simulation and experimental results show that the speed waveform and current waveform of the system have been significantly improved.