Steady-state characteristics of soft-switching buck-boost type AC-DC converter using magnetic-coupling for changes of load and AC input voltage

摘要

The soft-switching buck-boost type ac-dc converter using magnetic-coupling for improvement of power factor and distortion factor was proposed. The purpose of this paper is to describe power factor, distortion factor, regulation characteristics and power efficiency for the change of load current from 20% load to full load and for the change of input voltage from 160V to 240V. Furthermore, the proposed ac-dc converter satisfies the IEC 61000-3-2 Class D against changes of load and ac input voltage.