Nonlinear speed and flux control of synchronous reluctance motor drives based on adaptive backstepping and sliding-mode approach

摘要

In this paper, the nonlinear sliding-mode speed and flux control combined with the adaptive backstepping approach is proposed for synchronous reluctance motor (SynRM) drives. Based on the state-coordinates transformed mode! representing the speed and flux magnitude dynamics, the nonlinear sliding-mode control is designed to track a linear reference model. Furthermore, the adaptive backstepping control approach is utilized to obtain the robustness for mismatched parameter uncertainties. With the proposed control of speed and flux amplitude, the controlled SynRM drive possesses the advantages of good transient performance and robustness to parametric uncertainties, and the transient dynamics of the SynRM drive can be regulated through the design of a linear reference model which has the desired dynamic behaviors for the drive system. Finally, some experimental results are demonstrated to validate the proposed controllers.