Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Input Current Ripple Reduction Algorithm for Interleaved DC-DC Converter
Authors Dong-Myoung Joo ; Dong-Hee Kim ; Byoung-Kuk Lee
DOI 10.6113/TKPE/2014.19.3.220
Page pp.220-226
ISSN 1229-2214
Keywords interleaved boost converter; input current ripple reduction; DCM operation and fixed duty frequency control
Abstract Input current ripple and harmonic components of the power device are main causes of electromagnetic interference (EMI). Although the discontinuous conduction mode (DCM) operation can reduce harmonic components of the power device by reducing reverse recovery current of diode and turn-off voltage spikes of the switch, input current ripple increases due to high peak to peak inductor current. Therefore, in this paper, frequency control algorithm is proposed to reduce the input current ripple of DCM operated interleaved boost converter. In the proposed algorithm, duty ratio is fixed either 0.33 or 0.67 to minimize the input current ripple and the switching frequency is controlled according to operating conditions. 600 W 3-phase interleaved boost converter prototype system is built to verify proposed algorithm.