Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Switching Method for Minimizing the Over Current in Transient Response of 3-phase Interleaved Bidirectional DC-DC Converter with Frequency Modulation
Authors Jongwoo Bae ; Hyesoo Jeong ; Jae-Hun Jung ; Eui-Cheol Nho
DOI 10.6113/TKPE/2016.21.6.530
Page pp.530-537
ISSN 1229-2214
Keywords PWM switching method; Interleaved DC-DC converter; Frequency modulation
Abstract This work deals with a switching method for minimizing overcurrent in a three-phase interleaved bidirectional DC-DC converter with frequency modulation. Generally, a three-phase interleaved DC-DC converter is used to reduce a current ripple component. The combined operation of three-phase and two-phase converters can significantly reduce the ripple component. However, the conventional PWM method cannot solve severe overcurrent during phase transfer or frequency variation for power control. To overcome this problem, this work proposes a new PWM switching method. A 3 kW DC-DC power converter is designed and implemented, and the converter is operated in discontinuous current mode with varying switching frequencies for power control. Simulation and experimental results show the validity of the proposed switching method. The proposed switching method can be widely used in the field of current ripple reduction for three-phase interleaved bidirectional DC-DC converters.