Stability Analysis of an SMIB Power System Using an Integral Backstepping-Partial Feedback Linearizing Approach

In this paper, a new excitation controller for a synchronous generator (SG) is presented. The proposed controller is designed by combining the theory of integral-backstepping control and feedback linearizing control to augment the transient stability. At first the partial feedback linearization strategy is employed in order to linearize the model to a reduce order and then the nonlinear backstepping scheme is employed to get the control signal. Therefore, the proposed excitation controller not only overcomes the rotor angle’s measurement but also ensures the faster transient stability. The power system’s stability by means of the designed controller is ensured with the help of a Lyapunov function. Finally, the designed controller’s usefulness is assessed on a test power system. The result is also compared to an excitation controller developed only using the partial feedback linearizing technique.