Nonlinear adaptive backstepping control for synchronous generator excitation system with output constraints

For the synchronous generator excitation system, a nonlinear adaptive controller is designed based on backstepping method with the generator angle amplitude constraints and parameters uncertainties taken into consideration. In the design process, the non-linear characteristic are kept without any linearization used here. The system is adaptive to uncertain parameters and has good transient response property. The excitation system output meets the need of amplitude constraints. Simulation results show the effectiveness and advantages of the proposed method.