A nonlinear adaptive excitation controller design for two‐axis models of synchronous generators in multimachine power systems to augment the transient stability during severe faults

This paper presents an excitation controller design process for multimachine power systems with synchronous generators using adaptive backstepping approach to ensure robust performance against parametric uncertainties as well improve the transient stability during large disturbances. In this work, electrical dynamics of are described two-axis models while excitations represented IEEE Type II exciter which mainly captures swing equations used capture mechanical dynamics. The proposed control is then employed derive law. scheme uses all nonlinearities, due interconnections and rotations rotors in generators, within dynamical severe Furthermore, estimated values parameters appearing system adaptation laws based on real-time measurements hence, it provides robustness uncertainties. theoretical assessed Lyapunov theory, that is, by checking negative definiteness or semi-definiteness derivative functions (CLFs). Rigorous simulations conducted 39-bus 10-machine test evaluating under different operating conditions. Simulation results clearly demonstrate superiority over existing nonlinear controllers including designed classical model generators.