The devices that are typically utilized in industrial, commercial and residential applications got to undergo rectification for their correct functioning and operation. The AC supply is always vulnerable to the nonlinear loads like the inductive loads, which includes the induction and PMBLDC motors. In order to maintain a pure sinusoidal voltage at the AC source side, the Power factor Correction circuits at the source side are unavoidable. An approach of speed control of the BLDC motor by controlling the dc link voltage of the voltage source inverter (VSI) is used with a single voltage sensor. A bridgeless configuration of Buck-Boost converter is proposed that offers the elimination of the diode bridge rectifier, hence reducing the conduction losses which are related to it. This reduces the switching losses in VSI due to a low-frequency operation of VSI for electronic commutation of BLDC motor. The performance of the proposed drive is evaluated for a wide range of speed control with improved power quality at AC mains. The purpose of this paper is to control the speed of a brushless dc motor by using a PI controller and Neuro-fuzzy controller and is carried out using MATLAB/ Simulink tools and the results are validated.