Examination of Magnetic Properties of Magnetic Materials at High Temperature Using a Ring Specimen

被引：94

作者：

Takahashi, Norio ^{[1
]}

Morishita, Masayuki ^{[1
]}

Miyagi, Daisuke ^{[1
]}

Nakano, Masanori ^{[1
]}

机构：

[1] Okayama Univ, Dept Elect & Elect Engn, Okayama 7008530, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 02期

关键词：

Curie temperature; high temperature; magnetic properties; ring specimen;

D O I：

10.1109/TMAG.2009.2033122

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The magnetic properties of magnetic materials are considerably changed near the Curie temperature. In order to analyze the magnetic characteristics of magnetic devices which operate at high temperature, such as induction heater of billets, high temperature motor, the B - H curves and iron loss curves are necessary for the precise analysis. But, the reports of the examination of the measuring method and the behavior of such magnetic properties are few. In this paper, the measuring method of magnetic properties at high temperature is investigated. It is shown that the permeability is not changed so much under about 500 degrees C in the case of nonoriented electrical steel. However, it changes drastically above about 500 degrees C. The iron loss decreases with the increase of temperature. The decrease of iron loss is mainly due to the decrease of hysteresis loss with the increase of temperature.

引用

页码：548 / 551

页数：4

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