Robust model predictive current control without dead‐zone compensation

Abstract

To solve the problems of large steady‐state errors, high harmonic components and poor robustness of traditional current model prediction, a novel three‐vector model predictive current control for permanent magnet synchronous motor is presented in this study. The vectors operating time is calculated with the combination of current increment and the unconventional modulation method is adopted to generate duty cycle containing dead zone. Adopting the current command correction link, the current deviation caused by inaccuracy parameter is reduced. Proved by experiment, novel control system not only the current steady‐state error and current harmonic component are reduced, but also the parameter robustness is enhanced.