A Comparative Evaluation of DCM Control and CCM Control for Soft-Switching PFC Converter Used in Consumer IH Cooking Heater

Abstract

Harmonic currents in the utility side generated from the power electric equipment such as IH cooking heaters involve harmful influences to the other electrical applications. To suppress harmonic influences, adding the PFC converter to the input stage of IH cooking heater is one of the practical solutions. In this paper, two operation modes; DCM and CCM for the PFC converter are compared and tested from the view points of magnetic volume of the boost and filter inductors, source current harmonics suppression, power conversion efficiency and input power factor to clarify the suitable operation mode for home-use IH cooking appliance.