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Power factor improvement using dc-dc converter in BLDC motor drives

Author:

Vignesh, L. and Kaliappan, S.

Subject Area:

Physical Sciences and Engineering

Abstract:

This paper deals about the Power Factor Correction (PFC) in Brushless motor drives by comparing various DC-DC converter. Power factor corrected converter is essential to improve the Power quality (PQ). Speed control is done by Voltage Source inverter (VSI). In order to reduce conduction loss and number of components, diode bridge rectifier is eliminated. It is used to operate in DICM mode. The Brushless DC motor is fed by bridge rectifier with a elevated rate of DC-link capacitor. It consequences in extremely pulled supply current and a poor power factor. To achieve power factor near to unity is used to new bidirectional bridgeless isolated CUK converter. When compared to conventional Converters Circuit efficiency is further improved.

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