Title :
Magnetic Properties Measurement of Soft Magnetic Composite Materials Over Wide Range of Excitation Frequency
Author :
Li, Yongjian ; Yang, Qingxin ; Zhu, JianGuo ; Guo, Youguang
Author_Institution :
Hebei Univ. of Technol., Tianjin, China
Abstract :
Accurate measurements of magnetic properties of soft magnetic composite (SMC) material are performed on an improved 3-D tester by means of novel precision B-H sensing coils attached to the surface of a cubic SMC specimen. By controlling the adjustable excitation topologies, magnetic properties over wide excitation frequency range from 2 Hz to 1000 Hz are acquired and analyzed. In this paper, the relationship between the magnetic flux density vector B and magnetic field strength vector H has been systematically measured under alternating and 3-D conditions, and the core loss features have been analyzed. Compared with the conventional magnetic properties only at 50 Hz, wide-range-frequency magnetic properties contribute to extending application area of the new SMC electrical machines.
Keywords :
composite material interfaces; composite materials; magnetic flux; magnetisation; soft magnetic materials; excitation frequency; frequency 2 Hz to 1000 Hz; magnetic field strength vector; magnetic flux density vector; magnetic properties; magnetization; soft magnetic composite materials; Coils; Core loss; Magnetic hysteresis; Magnetic properties; Sensors; Testing; Three dimensional displays; Anisotropy; flexible excitation coil; improved 3-D magnetic testing system; rotational magnetization; sensing coil; soft magnetic composite (SMC); wide-range frequency;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2011.2175677
