Optimum design of a high-power, high-frequency transformer

Author

Petkov, R.

Author_Institution

Swichtec Power Syst., Christchurch, New Zealand

Volume

11

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

33

Lastpage

42

Abstract

A procedure for optimum design of a high-power, high-frequency transformer is presented. The procedure is based on both electrical and thermal processes in the power transformer and identifies: (a) the VA-rating of ferrite cores in relation to the operating frequency; (b) the optimum flux density in the core; and (c) the optimum current densities of the windings providing maximum transformer efficiency. Since the transformer is the major contributor to the volume and weight of the power supply, the results of transformer analysis can be used for entire power supply optimization as well. Two high-power, high-frequency transformers are optimally designed, built, and tested. Practical results show good agreement with the theory

Keywords

current density; design engineering; high-frequency transformers; magnetic cores; magnetic flux; optimisation; power transformers; transformer cores; transformer windings; HF power transformer; VA-rating; current density; design optimisation; electrical and thermal processes; ferrite cores; maximum transformer efficiency; operating frequency; optimum flux density; power supplies; thermal processes; windings; Circuit faults; Conductors; Core loss; Curve fitting; Ferrites; Frequency; Switched-mode power supply; Temperature; Transformer cores; Wire;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.484414

Filename

484414