Non-Isolated three-Phase four-Line Buck-Boost Soft-Switching PFC Converter

Abstract

In this paper, we propose a discontinuous conduction current mode (DCM) control method for three-phase four-line buck-boost power factor corrected (PFC) converter and its soft-switching circuit configuration. The PFC converter generates three phase sinusoidal input currents by switching operation of constant frequency, constant duty factor and open loop control. To improvement of input current waveform, a new control method for soft-switching converter is described.