Advanced soft magnetic materials for high frequency and high power application

Loss separation has fundamental importance for optimizing the magnetic material for a given frequency of operation. The loss separation model assumes the existence of two main terms: one due to the hysteresis at the quasi-static situation with frequency less than 0.01 Hz and another dynamic, due to high frequency eddy currents. In this study, it is discussed the physical reasoning behind the loss separation model. Magnetic Barkhausen Noise can be a valuable tool for better understanding the physics of loss separation.

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A new planar-type high-frequency detector utilizing the skin effect in soft magnetic materials

10.1109/intmag.1989.690192 ◽

1989 ◽

Author(s):

M. Yamaguchi ◽

H. Matsuki ◽

K.I. Arai ◽

K. Murakami

Keyword(s):

Magnetic Materials ◽

High Frequency ◽

Skin Effect ◽

Soft Magnetic Materials ◽

Soft Magnetic ◽

Frequency Detector

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Fe-P Soft Magnetic Properties of Iron for A.C. Applications

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.585.289 ◽

2012 ◽

Vol 585 ◽

pp. 289-293

Author(s):

S.K. Chaurasia ◽

Ujjwal Prakash ◽

P.S. Misra ◽

K. Chandra

Keyword(s):

Magnetic Material ◽

Magnetic Properties ◽

Magnetic Materials ◽

High Frequency ◽

Eddy Current Loss ◽

Soft Magnetic Materials ◽

Soft Magnetic Properties ◽

Wide Spread ◽

Soft Magnetic ◽

Final Density

Silicon steels and ferrites dominate soft magnetic materials. However, Soft magnetic materials using powder metallurgical techniques are gaining wide spread use in motor, compressors and other rotating devices. High-density Fe-P soft magnetic materials have been developed using hot powder forging route. It was observed that phosphorous addition (ranging from 0.30P-0.80P) enhances the soft magnetic properties of iron for AC applications. This new soft magnetic material offers many manufacturing advantages. Because of its low eddy current loss, it has good high frequency magnetic properties comparable to other soft magnetic materials. Also, it has been observed that phosphorous addition improves the final density of the resulting product.

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Studies of amorphous soft magnetic materials with extra low core loss at high frequency

Journal of Applied Physics ◽

10.1063/1.330210 ◽

1982 ◽

Vol 53 (11) ◽

pp. 7825-7827 ◽

Cited By ~ 2

Author(s):

Wu‐Shin Chang ◽

Yung‐chu Han

Keyword(s):

Magnetic Materials ◽

High Frequency ◽

Core Loss ◽

Soft Magnetic Materials ◽

Soft Magnetic

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A new planar-type high-frequency current detector utilizing the skin effect in soft magnetic materials

IEEE Transactions on Magnetics ◽

10.1109/20.42445 ◽

1989 ◽

Vol 25 (5) ◽

pp. 3824-3826 ◽

Cited By ~ 5

Author(s):

M. Yamaguchi ◽

H. Matsuki ◽

K.I. Arai ◽

K. Murakami

Keyword(s):

Magnetic Materials ◽

High Frequency ◽

Skin Effect ◽

Soft Magnetic Materials ◽

Soft Magnetic ◽

High Frequency Current ◽

Frequency Current

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Utilization of Reluctance Electromagnetic Force of Inner-Mover-Type Rotary-Linear Motor

International Journal of Automation Technology ◽

10.20965/ijat.2020.p0129 ◽

2020 ◽

Vol 14 (1) ◽

pp. 129-134

Author(s):

Fumiaki Osawa ◽

Keyword(s):

Magnetic Materials ◽

Eddy Current ◽

High Power ◽

Electromagnetic Force ◽

Eddy Current Loss ◽

Soft Magnetic Materials ◽

Direct Drive ◽

Soft Magnetic ◽

Salient Pole ◽

Three Phase

A multiple-degree-of-freedom (multi-DOF) motor can constitute small-sized and lightweight systems capable of performing complicated motions. Furthermore, the prospects for applications to industrial instruments via a direct drive are promising. This study aimed to develop practical multi-DOF motors capable of performing high-power rotary and linear motions using conventional three-phase inverters. A motor that performs rotary and linear motions is proposed. First, a method is presented for installing a salient pole on a needle with magnets. The method facilitates the use of soft magnetic materials with low eddy-current loss as iron cores. This study demonstrated the effectiveness of the salient pole for increasing the electromagnetic force. The model is used to explain the interactive magnetic interference generated by the armature currents for rotational and translation motions.

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