POWER QUALITY IMPROVEMENT USING BRIDGELESS BUCK-BOOST CONVERTER FED BLDC MOTOR DRIVE

BLDC motors are widely using in many of the industrial applications. Various converter topologies are used for feeding these Brushless Direct Current (BLDC) motor drives. In this paper, a Power Factor Corrected (PFC) bridgeless (BL) buck-boost converter topology is proposed in order to fed a BLDC motor drive for low-power applications. A bridgeless buck-boost converter which avoids the need of the diode bridge rectifier, reducing the conduction losses which incurred because of it. Filters are usually provided along with these converters for the correction of power quality and thereby reducing the total harmonic distortion level. Finally, in Matlab/Simulink environment, performances of the proposed drive are simulated, which improves the power quality at ac mains