An optimum single phase PFC circuit using CSC converter

The conventional boost converters can be generally used for rectifier circuits with power factor correction, while the output voltage can not be adjusted over a wide range. In a case of expanding the controlled voltage range, buck-boost type including Cuk converter should be employed. This paper discusses an optimum circuit configuration for power factor correction. Single-phase power factor correction using a buck boost converter can control the output voltage over a wide range, because it has the ability to step-up and step-down the output voltage. Firstly, this paper compares the mechanisms of the proposed power transmission technique and the characteristics based on the voltage and the current ripple in terms of EMI noise. Secondly, these converters are applied to the single-phase power factor correction. It is found that the CSC (Canonical Switching Cell) is the best choice and selected as the optimum PFC.