Adaptive backstepping control for hybrid excitation synchronous machine with uncertain parameters

This paper proposes an adaptive backstepping speed controller for a novel hybrid excitation synchronous machine (HESM) with nonlinear coupling and parametric uncertainty. With the proposed adaptive backstepping controller, the speed tracking of the HESM possesses the advantages of good transient control performance and robustness to the parametric uncertainty and load torque disturbance. Stability analysis for the control system is presented theoretically. Simulation results validate the effectiveness of the proposed control scheme.