Design and Analysis of a Regenerative Snubber for a 2.2 kW Active-Clamp Forward Converter with Low-Voltage Output

2021 ◽  
Author(s):  
Bastian Korthauer ◽  
Philipp Rehlaender ◽  
Frank Schafmeister ◽  
Joachim Bocker
Keyword(s):  
Low Voltage ◽  
Forward Converter ◽  
Voltage Output ◽  
Active Clamp

scholarly journals A Novel Hybrid LDC Converter Topology for the Integrated On-Board Charger of Electric Vehicles

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3603
Author(s):  
Vu-Hai Nam ◽  
Duong-Van Tinh ◽  
Woojin Choi
Keyword(s):  
Low Voltage ◽  
Operating Conditions ◽  
Maximum Efficiency ◽  
Battery Charger ◽  
Forward Converter ◽  
Vehicle To Grid ◽  
Circulating Current ◽  
In Series ◽  
Converter Topology ◽  
Output Capacitor

Recently, the integrated On-Board Charger (OBC) combining an OBC converter with a Low-Voltage DC/DC Converter (LDC) has been considered to reduce the size, weight and cost of DC-DC converters in the EV system. This paper proposes a new integrated OBC converter with V2G (Vehicle-to-Grid) and auxiliary battery charge functions. In the proposed integrated OBC converter, the OBC converter is composed of a bidirectional full-bridge converter with an active clamp circuit and a hybrid LDC converter with a Phase-Shift Full-Bridge (PSFB) converter and a forward converter. ZVS for all primary switches and nearly ZCS for the lagging switches can be achieved for all the operating conditions. In the secondary side of the proposed LDC converter, an additional circuit composed of a capacitor and two diodes is employed to clamp the oscillation voltage across rectifier diodes and to eliminate the circulating current. Since the output capacitor of the forward converter is connected in series with the output capacitor of the auxiliary battery charger, the energy from the propulsion battery can be delivered to the auxiliary battery during the freewheeling interval and it helps reduce the current ripple of the output inductor, leading to a smaller volume of the output inductor. A 1 kW prototype converter is implemented to verify the performance of the proposed topology. The maximum efficiency of the proposed converter achieved by the experiments is 96%.

Double-Ended Active-Clamp Forward Converter With Low DC Offset Current of Transformer

2020 ◽  
Vol 67 (2) ◽  
pp. 1036-1047 ◽  
Author(s):  
Myung-Ho Kim ◽  
Seung-Hoon Lee ◽  
Bom-Seok Lee ◽  
Ji-Yeon Kim ◽  
Jae-Kuk Kim
Keyword(s):  
Forward Converter ◽  
Dc Offset ◽  
Active Clamp

Implementation of Forward Converter with Active Clamp for Welding Machines

2021 ◽  
Author(s):  
Fatih ZUNGOR ◽  
M. Faruk BILICIOGLU ◽  
Enes KAVAK ◽  
Ibrahim ESKI ◽  
Metin OZTURK ◽  
...  
Keyword(s):  
Forward Converter ◽  
Active Clamp

A scalable strategy toward compliant tandem yarn-shaped supercapacitors with high voltage output

2021 ◽  
Author(s):  
Juan Zhang ◽  
Qingli Xu ◽  
Xiangyu Qian ◽  
Xinhou Wang ◽  
Kun Zhang
Keyword(s):  
High Voltage ◽  
Aqueous Electrolyte ◽  
Low Voltage ◽  
Voltage Output ◽  
In Series

Yarn-shaped supercapacitors (YSSCs) based on aqueous electrolyte exhibit relatively low voltage output due to the low decomposition voltage of water (~1.23 V). Applying organic-based electrolyte or connecting YSSCs in series...

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