Analysis of PFC Buck-Boost Converter Fed PMBLDC Motor Drive Systems

Abstract

Electric motors influence almost every aspect of modern life. Refrigerators, vacuum cleaners, air conditioners, fans, computer hard drives, automatic vehicle windows, & a number of other household products & devices employ electric motors to convert electrical energy into usable mechanical energy. Electric motors power a wide range of industrial processes in addition to powering residential appliances. Brushless DC (BLDC) motor drives have grown in popularity in recent years due to their suitability for a wide range of low and medium power applications such as household appliances, medical equipment, position actuators, Heating, Ventilation, and Air Conditioning (HVAC), motion control, and transportation. These drives have great efficiency, dependability, durability, and outstanding performance across a wide range of speed control. The BLDC motor cannot be connected directly to the supply and must be driven by a drive consisting of VSI controlled by an electronic commutation system. Harmonics are introduced into the main power supply and power factor issue by the electronic commutation system and rectification procedure. Power Factor Correction (PFC) converters are used to improve the power quality and power factor of the alternating current mains.