Magnetic Properties Improvement of Amorphous Cores Using Newly Developed Step-Lap Joints

Author

Chang, Yeong-Hwa ; Hsu, Chang-Hung ; Tseng, Ching-Pei

Author_Institution

Dept. of Electr. Eng., Chang Gung Univ., Taoyuan, Taiwan

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1791

Lastpage

1794

Abstract

This paper focuses on the study of lap joints for amorphous cores, where the magnetic loss and noise related to lap-joint configurations are considered. Both the conventional step-lap (CSL) and a newly developed step-lap (NSL) are addressed, in which special emphasis is put on the underlying physical mechanisms in the step-lap number and overlap. The NSL core exhibits unique distribution of step-lap numbers and overlap alignment that will reduce the core sensitivity subject to the variations of magnetostriction. Finally, to investigate the performance of magnetic properties, a three-phase wound amorphous-cored transformer with capacity 1850 kVA is constructed. Experimental results illustrate that the proposed NSL core can provide better performance of lower core loss, exciting power, and noise than the conventional counterparts.

Keywords

power transformers; transformer cores; amorphous cores; apparent power 1850 kVA; developed step-lap joints; magnetic loss; magnetic property; magnetostriction; three-phase wound amorphous-cored transformer; Amorphous magnetic materials; Amorphous materials; Magnetic cores; Magnetic losses; Magnetic noise; Magnetic properties; Magnetostriction; Performance loss; Transformer cores; Wounds; Amorphous alloy; core loss; exciting power; step-lap joint;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2045738

Filename

5467600