High Frequency Core Coefficient for Transformer Size Selection


Transformer design is critical as the demands on power converter efficiency and power density increase. Initial transformer core shape and size selection can be challenging, in many cases necessitating multiple elaborate design iterations to find a suitable core. A number of core constants have been proposed in the past to assist with initial core selection, however, most of them do not consider high frequency losses in transformer cores which are becoming increasingly important. The Kgfe transformer design method is adapted in this paper to consider high frequency copper losses in transformer designs with bi-directional excitation and two windings. The presented expressions can be used to quickly determine the minimum achievable power losses for a given core size, material and wire diameter.

Meeting Name

8th Annual IEEE Energy Conversion Congress and Exposition (2016: Sep. 18-22, Milwaukee, WI)


Electrical and Computer Engineering

Research Center/Lab(s)

Intelligent Systems Center

Keywords and Phrases

Energy Conversion; High Frequency Transformers; Ion Beams; Structural Analysis; Bi-Directional Excitation; Converter Efficiency; Design Iteration; High Frequency HF; High Frequency Loss; Transformer Core; Transformer Design; Transformer Modeling; Transformer Windings; High-Frequency Transformer; Transformer Model

International Standard Book Number (ISBN)

978-1509007370; 978-1509007387

Document Type

Article - Conference proceedings

Document Version


File Type





© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Sep 2016