A robust offset-free model predictive current control for induction motor based on incremental model and incremental current observer

Abstract

Despite the huge progress of model predictive control (MPC) for electrical drives that has taken place over the last few years, there are still some issues that require further study, such as robustness, steady-state performance, and tracking error reduction. This paper proposed a robust offset-free model predictive current control (ROF-MPCC) for induction motor. The proposed ROF-MPCC applies incremental model and incremental current observer to achieve offset-free prediction and time-delay compensation. ROF-MPCC has good robustness to the rotor flux and model parameters, and can eliminate the steady-state error in control. Experimental results demonstrate that ROF-MPCC has good stead-state and dynamic performance.