Robust Stabilizer of Electric Power Generator Using Hinf with Pole Placement Constraints

This paper deals with the application of robust control theory to the design of electric power system stabilisers. The well-known H∞ technique is combined with pole placement constraints and solved with Linear Matrix Inequalities approach. This convex optimisation problem guarantees robust pole placement and leads to improved closed-loop system robustness and transient response characteristics. Uncertainties are taken into account in a robust fixed parameter and structure control law to allow for parameter variations and perturbations acting on the electrical power system. The proposed controllers are compared with μ-synthesis under a variety of operating conditions of the electrical power network.