A Control Strategy for a Power Factor Compensator Based on Double-Inductor Boost Converter

In this paper, the modelling and control design for a double-inductor boost converter with power factor correction capability (PFC-DIBC) is proposed. The PFC-DIBC is coupled to the electrical grid by a rectification stage, formed by a full-bridge diode rectifier, then a high gain DC-DC DIBC stage feeds the DC load with a fixed voltage level. The main advantage of this configuration is the presence of the DC-DC DIBC which is capable to provide a high conversion ratio for the output voltage. The proposed controller is based on the average model of the system and consists of two main control loops: a current tracking loop and a voltage regulation loop. The first is aimed to force the line current to track a sinusoidal current reference proportional to the grid voltage and the second objective is aimed to regulate the output voltage to a desired reference. Finally, to assess the performance of the proposed controller numerical simulations of the system using PSCAD software are presented.