Interleaved Boost Converter with Ripple Cancellation Network

This paper presents an interleaved boost converter (IBC) with ripple cancellation network (RCN). Based on the conventional IBC, two capacitors, two coupled inductors, and two inductors are added as RCN in the proposed converter. Therefore, the proposed converter shares the same advantages of the conventional IBC and achieves input current ripple cancellation without significantly increasing the current stress and loss of the converter. Finally, a 36-V input voltage, 50-V output voltage, and 1-kW output power prototype circuit operating at 100 kHz is implemented in the laboratory to verify the expected performance. The proposed converter can achieve input current ripple cancellation in all power range with the efficiency higher than 96%. The simulation and experimental results show that the proposed IBC with RCN has great potential to be applied in high-power, high-efficiency dc/dc conversion.

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