Measurement of Soft Magnetic Composite Material Using an Improved 3-D Tester With Flexible Excitation Coils and Novel Sensing Coils

Author

Li, Yongjian ; Zhu, Jianguo ; Yang, Qingxin ; Lin, Zhi Wei ; Guo, Youguang ; Wang, Yi

Author_Institution

Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1971

Lastpage

1974

Abstract

In this paper, accurate measurement of three dimensional (3-D) magnetic properties of soft magnetic composite (SMC) material is carried out by using an improved 3-D tester with adjustable excitation coils and novel sensing coils attached upon the surface of the SMC specimen. Comparing with the conventional 3-D tester operating at 50 Hz, the improved 3-D tester enables measurements over wide frequency range from 2 Hz to 1000 Hz. The relationships between the B vector and H vector are measured under both alternating and rotating flux conditions, and the core loss features are analyzed. These experimental results are crucial for designing new SMC electrical machines, which are expected to operate at 200 Hz or above.

Keywords

coils; composite materials; magnetic hysteresis; magnetic sensors; magnetic variables measurement; soft magnetic materials; 3-D tester; B vector; H vector; SMC electrical machines; alternating flux conditions; core loss; flexible excitation coils; frequency 2 Hz to 1000 Hz; hysteresis loops; rotating flux conditions; sensing coils; soft magnetic composite material; three dimensional magnetic properties; Coils; Composite materials; Frequency measurement; Loss measurement; Magnetic flux; Magnetic materials; Materials testing; Rotation measurement; Sliding mode control; Soft magnetic materials; Flexible excitation coil; improved 3-D magnetic tester; sensing coil; soft magnetic composite (SMC);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2010.2043339

Filename

5467520