The pursuit of optimum chopper circuits for power factor corrections

For rectifier circuits with power factor correction, boost converters are generally used, and as a result the output voltage becomes limited. To expand the controlled voltage range, buck-boost or Ćuk converter types should be utilized. This paper presents and is discussed on a circuit configuration with power factor correction primarily by a third type of buck boost converter. termed a `canonical switching cell´. Firstly, various type of converter are compared in terms of the mechanisms of the power transmission and the characteristics based on the switching ripple and switching surge voltage. Such switching surge is resolved and represented by power flow chart, and as a result, CSC converter is the best choice with respect to PFC converters.