Lyapunov design of excitation control for synchronous machines

Presents an excitation controller for synchronous machines. The control law is derived using the control Lyapunov function concept and an equilibrium tracking mechanism, resulting in a dynamic state feedback controller. Both damping improvement and enlargement of the stability region are achieved, and the knowledge of the operating point is not required. Simulation results for a case study are presented showing the significant improvement obtained both in transient stability and dynamic performance.