Power Factor Correction in BLDC motor drives using DC-DC converters

This thesis deal among Power Factor Correction (PFC) in Brushless motor drives by comparing various DC-DC converter topologies. To improve the Power quality (PQ) power factor corrected converter is essential. VSI is used for speed control. In order to condense conduction loss and quantity of components diode bridge rectifier is eliminated. It is used to operate in DICM mode. The BLDC motor is fed by diode bridge rectifier with a elevated rate of DC-link capacitor. It consequences in extremely distorted supply current and a poor power factor. A new bidirectional bridgeless isolated cuk converter is used to achieve power factor near to unity. when compared to conventional Converters Circuit efficiency is further improved.