Test Method Research of Magnetic Saturation Current of High-Frequency Transformer

Author

Ma, Hongtao ; Wang, Xiaojun ; Zhou, FenPing

Author_Institution

Coll. of Inf. Sci. & Eng., Hebei Univ. of Sci. & Technol., Shijiazhuang, China

Volume

2

fYear

2009

fDate

11-12 April 2009

Firstpage

712

Lastpage

714

Abstract

When the case of magnetic saturation of high-frequency transformer occurs in switching power supply, the effect to efficiency and output power as well as the harm to power switch tube are analyzed. A method of low-voltage, low-frequency square wave signal driving the primary coil of high-frequency transformer is introduced. By observing the current waveform of coil with oscilloscope and some following simple calculation, high-frequency magnetic transformer saturation current value can be obtained. The principle, related circuit, specific method, an example and result analysis of measuring are presented.

Keywords

coils; high-frequency transformers; switched mode power supplies; transformer testing; high-frequency transformer test method; magnetic saturation current; oscilloscope; power switch tube; primary coil; square wave signal; switching power supply; Circuit faults; Inductance; Inductors; Magnetic analysis; Magnetic cores; Magnetic switching; Permeability; Power supplies; Saturation magnetization; Testing; high-frequency transformer; magnetic staturation; test method;

fLanguage

English

Publisher

ieee

Conference_Titel

Measuring Technology and Mechatronics Automation, 2009. ICMTMA '09. International Conference on

Conference_Location

Zhangjiajie, Hunan

Print_ISBN

978-0-7695-3583-8

Type

conf

DOI

10.1109/ICMTMA.2009.145

Filename

5203532