Analysis and simulation of distorting regime compensation for a static excitation system in a power system through passive filtering

This paper presents measurements of power quality indices for a static excitation system composed of transformer and controlled rectifier bridge in a power system generator group and the corresponding MATLAB/Simulink simulation. Replacing the old auxiliary excitation generator eliminates the disadvantage of using electrical machines with the mass in motion inertia and wear over time, but with the price of facing two important problems: the line voltage notching due to thyristor commutation and also the distorting of line current. Theoretical aspects of line notching and several solutions for compensation strategies and their limitations are discussed. The MATLAB/Simulink model allows us to implement the solution we chosen to deal with these problems and observe its effectiveness based on the results.