Dynamic surface control design for hybrid excitation synchronous machines

In this research, a nonlinear feedback stabilizing controller technique is de- veloped for a hybrid excitation synchronous machine (HESM) system. Utilizing the dy- namic surface method, the desired control law is designed. The developed control mech- anism ensures that all closed-loop system trajectories are semi-globally uniformly and ultimately bounded. A nonlinear dynamical system of the HESM is used to demonstrate the effectiveness and applicability of the technique. The simulation results indicate that the method can maintain speed even in the presence of a sudden load torque. It is capable of rapidly reducing oscillations and outperforming the existing nonlinear controller such as the backstepping controller.