Robust predictive control of PMSM based on internal mode perturbation observer

Abstract Aiming at the problems of large current static difference and poor robustness of the traditional non-differential beat current prediction control for permanent magnet synchronous motor, this paper proposes a robust non-differential beat current prediction control method based on the internal-mode perturbation observer, and applies the improved non-differential beat current prediction control with the robust control algorithm to the current loop. To reduce the effect of the prediction control on the inductance parameters of the motor, the internal-mode perturbation observer is introduced to solve the problem of the control system due to the parameter mismatch. By observing the parameter perturbation of the system and correcting and compensating the voltage control output, a more accurate and stable current control of the system can be realized.