Current spectra translation in single phase rectifiers: implications to active power factor corrections

This study examines the input and output current spectra translation of a line-commutated single-phase full wave rectifier. Analytical expressions for the spectra translation of the current harmonics are derived. The proposed method is then used to quantify the contribution of a current-loop with finite bandwidth to the overall THD budget in average current mode APFC systems. The proposed theory is supported by computer simulation.