A Digitally Controlled Unity Power Factor Compensator for Pulse-Burst-Modulated Loads

Pulse-burst-modulated (PBM) loads cause line losses that are significant when compared with equivalent loads that are compensated to operate with sinusoidal line currents. This study details the conceptual design of a system meant to compensate the power factor of a load power conditioned by means of PBM. The compensator controller is a digital controller that monitors the line current and voltage and adjusts the compensation current accordingly. Simulations of the proposed method confirm the effectiveness of such a compensator maintaining a nearly sinusoidal line current, even in the presence of an inductive load.