Novel concepts for high frequency high efficiency transformer design

Author

Fu, Dianbo ; Wang, Shuo

Author_Institution

Power Syst. Div., Huawei Technol. Co., Ltd., Plano, TX, USA

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

3800

Lastpage

3807

Abstract

This paper provides a thorough study of transformer design for high-frequency applications. Several novel concepts are proposed to reveal the fundamentals of the transformer design. The minimum electric and magnetic energy theorem is presented to optimize the transformer design. With the utilization of the minimum electric and magnetic energy theorem, the current distribution among high-frequency parallel windings can be identified. Optimal winding structures are proposed to achieve low power losses, and leakage inductance controllability is studied for soft-switching applications. The proposed concepts and theoretical analysis are verified in an LLC resonant dc-dc converter prototype.

Keywords

DC-DC power convertors; leakage currents; machine windings; power transformers; zero current switching; zero voltage switching; LLC resonant dc-dc converter prototype; current distribution; electric energy; high-frequency applications; high-frequency parallel windings; leakage inductance; low power losses; magnetic energy; optimal winding structures; soft-switching; transformer design; Conductors; Copper; Magnetic fields; Magnetic flux; Skin; Superconducting magnets; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6064285

Filename

6064285