A general approach for the analysis of the input power quality in matrix converters

In this paper, a general approach based on a linearized analysis is employed in order to determine the matrix converter performance in terms of input-current quality. Considering input disturbances such as voltage unbalance and voltage distortion as a linear deviation from the fundamental harmonic component, it is possible to evaluate analytically the input-current harmonic content. It is emphasized that the input-current frequency spectrum is affected by the input-current modulation strategy employed. By using an optimal dynamic modulation strategy, it is possible to minimize the input-current harmonic content. Some numerical results are given to confirm the analytical solutions.