TY - GEN
T1 - Secondary-Side Center-Tapped Transformer Structure with One-Turn Secondary Coils Integrating Rectifier for Reducing Copper Loss of Forward Converter
AU - Shirakawa, Tomohide
AU - Umetani, Kazuhiro
AU - Hiraki, Eiji
AU - Martinez, Wilmar
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/6
Y1 - 2020/6
N2 - Secondary-side center-tapped transformer is a common transformer design of the high step-down forward converters owing to its effective reduction of the copper loss. Particularly, the extremely high step-down converters tend to have one-turn secondary coils to increase the winding turn ratio. However, due to the proximity effect in the terminal and the wire connecting the secondary coils and the rectifier, this design tends to suffer from significant deterioration of the copper loss reduction effect. To mitigate this problem, this paper proposes a novel transformer's secondary-side structure that integrates the one-turn secondary coils and the rectifier. The proposed transformer structure can mitigate the proximity effect in the secondary coils and the rectifier, thus suppressing the local concentration of the current distribution. Experiments revealed effective reduction of the copper loss, supporting the effectiveness of the proposed structure.
AB - Secondary-side center-tapped transformer is a common transformer design of the high step-down forward converters owing to its effective reduction of the copper loss. Particularly, the extremely high step-down converters tend to have one-turn secondary coils to increase the winding turn ratio. However, due to the proximity effect in the terminal and the wire connecting the secondary coils and the rectifier, this design tends to suffer from significant deterioration of the copper loss reduction effect. To mitigate this problem, this paper proposes a novel transformer's secondary-side structure that integrates the one-turn secondary coils and the rectifier. The proposed transformer structure can mitigate the proximity effect in the secondary coils and the rectifier, thus suppressing the local concentration of the current distribution. Experiments revealed effective reduction of the copper loss, supporting the effectiveness of the proposed structure.
KW - coil structure
KW - copper loss
KW - forward converter
KW - proximity effect
KW - transformer
UR - http://www.scopus.com/inward/record.url?scp=85089500045&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85089500045&partnerID=8YFLogxK
U2 - 10.1109/ISIE45063.2020.9152390
DO - 10.1109/ISIE45063.2020.9152390
M3 - Conference contribution
AN - SCOPUS:85089500045
T3 - IEEE International Symposium on Industrial Electronics
SP - 1459
EP - 1465
BT - 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th IEEE International Symposium on Industrial Electronics, ISIE 2020
Y2 - 17 June 2020 through 19 June 2020
ER -