Robust Adaptive Excitation Control Based on a New Backstepping Approach

This paper presents a new backstepping approach for a class of nonlinear systems which can be feedback linearized. Compared with conventional methods, requirements to the controlled systems are reduced; over-parameterized problem can be avoided; while the robustness to external disturbances and adaptivity to uncertain parameters of the controller are reserved. Based on this approach, robust adaptive excitation controller is designed; the control law and adaptive law are derived. Computer test results demonstrate that the presented controller can more effectively improve transient stability of power systems than conventional controllers.