RT Journal Article
A1 R.-Y. Duan
A1 J.-D. Lee

PB iet
T1 High-efficiency bidirectional DC-DC converter with coupled inductor
JN IET Power Electronics
VO 5
IS 1
SP 115
OP 123
AB This study presents a novel soft-switching bidirectional dc-dc converter with a coupled inductor. Transformer-based circuit topologies are commonly employed in conventional bidirectional converters and soft-switching techniques, including zero-voltage switching (ZVS) or zero-current switching (ZCS), are frequently applied to mitigate switching losses. Unfortunately, the use of more than four switches and several diodes in these transformer-based schemes increase production costs and reduce conversion efficiency. This work presents a coupled-inductor bidirectional converter scheme that utilises four power switches to achieve the goal of bidirectional current control. The high step-up and step-down ratios enable a battery module current with a low-voltage level to be injected into a high-voltage dc bus for subsequent utilisation. Experimental results based on a 24 V/200 V 800 W prototype are provided to verify the effectiveness of the proposed bidirectional converter. Since the voltage clamping, synchronous rectification and soft-switching techniques are utilised in the proposed circuit topology and the corresponding device specifications are adequately fulfilled, the proposed converter can provide highly efficient bidirectional power conversion in a wide range on the low-voltage side.
K1 step-up-step-down ratios
K1 circuit topology
K1 power switches
K1 switching loss mitigation
K1 production costs
K1 soft-switching bidirectional DC-DC converter
K1 voltage 24 V
K1 voltage 200 V
K1 zero-voltage switching
K1 transformer-based circuit topologies
K1 high-efficiency bidirectional DC-DC converter
K1 conversion efficiency
K1 voltage clamping
K1 synchronous rectification
K1 bidirectional power conversion
K1 ZVS
K1 bidirectional current control
K1 battery module current
K1 power 800 W
K1 zero-current switching
K1 coupled inductor
K1 high-voltage DC bus
K1 ZCS
DO https://doi.org/10.1049/iet-pel.2010.0401
UL https://digital-library.theiet.org/;jsessionid=4cm51h2ap5oc.x-iet-live-01content/journals/10.1049/iet-pel.2010.0401
LA English
SN 1755-4535
YR 2012
OL EN