This document describes the comparative analysis of tree control techniques: Proportional Integral Control, Generalized Proportional Integral observer-based Control and Resonant Control. The comparison was made on the context of power factor correction and total harmonic distortion reduction. These control techniques were tested on AC-DC Boost bridgeless converter. Simulations and experiments were made and it was found the Generalized Proportional Integral observer-based Control has the best performance since it is capable of reducing the THD to 1.9% and achieves a unitary power factor.