Non-isolated LLC resonant DC-DC converter with balanced rectifying current and stress

In isolated type LLC resonant converters, transformer leakage inductances can be merged with the resonant inductor to extend the ZVS capability of the switches apart from isolation and voltage scaling. However, the transformer presents a resonant imbalance in the secondary side leading to secondary...

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Main Authors: Mohammed Dobi, Abdulhakeem (Author), Sahid, Mohd Rodhi (Author)
Format: EJournal Article
Published: Institute of Advanced Engineering and Science, 2020-05-01.
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LEADER 02328 am a22003013u 4500
001 ijeecs19783_13669
042 |a dc 
100 1 0 |a Mohammed Dobi, Abdulhakeem  |e author 
100 1 0 |e contributor 
700 1 0 |a Sahid, Mohd Rodhi  |e author 
245 0 0 |a Non-isolated LLC resonant DC-DC converter with balanced rectifying current and stress 
260 |b Institute of Advanced Engineering and Science,   |c 2020-05-01. 
500 |a https://ijeecs.iaescore.com/index.php/IJEECS/article/view/19783 
520 |a In isolated type LLC resonant converters, transformer leakage inductances can be merged with the resonant inductor to extend the ZVS capability of the switches apart from isolation and voltage scaling. However, the transformer presents a resonant imbalance in the secondary side leading to secondary current unbalance, an increase in RMS value of the secondary current and increase thermal stress. This paper proposed a half-bridge non-isolated LLC resonant converter with a balanced rectifying current and stress in the rectifier diodes. The proposed converter can achieve the most advantages of isolated LLC converters, such as ZVS and low MOSFET turn-off loss. By the non-isolation method, secondary current and, transformer loss is significantly reduced. In addition, rectifier diodes operate with zero current switching and balanced rectifying current and stress over the entire operating range. The proposed non-isolated structure is verified by the experimental result with a 60W LLC resonant converter.  
540 |a Copyright (c) 2020 Institute of Advanced Engineering and Science 
540 |a http://creativecommons.org/licenses/by-nc/4.0 
546 |a eng 
690 |a ELECTRICAL ENGINEERING. ELECTRICAL POWER SYSTEM 
690 |a Current Unbalance; DC-DC Converter; LLC Resonant Converter; ZVS; ZCS. 
655 7 |a info:eu-repo/semantics/article  |2 local 
655 7 |a info:eu-repo/semantics/publishedVersion  |2 local 
655 7 |2 local 
786 0 |n Indonesian Journal of Electrical Engineering and Computer Science; Vol 18, No 2: May 2020; 698-706 
786 0 |n 2502-4760 
786 0 |n 2502-4752 
786 0 |n 10.11591/ijeecs.v18.i2 
787 0 |n https://ijeecs.iaescore.com/index.php/IJEECS/article/view/19783/13669 
856 4 1 |u https://ijeecs.iaescore.com/index.php/IJEECS/article/view/19783/13669  |z Get fulltext