A 200°C curable soft magnetic composite with high permeability and low core loss for power applications at >1 MHz

In this paper, the effect of heat treatment processing on magnetic properties of Fe-3.5Si soft magnetic composite has been investigated. The thermal treatment improved the magnetic properties of Fe-3.5Si SMC materials. With the treatment temperature increasing, the permeability and eddy loss of the composites increase and the core loss and hysteresis loss decrease. The magnetic properties would be deteriorated at too high temperature. Annealed temperature at 750°C for 60min, the Fe-3.5Si soft magnetic composite has the optimum overall magnetic properties.

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Test Results of SMC Cores as Some Types of Motor Cores

Materials Science Forum ◽

10.4028/www.scientific.net/msf.534-536.1369 ◽

2007 ◽

Vol 534-536 ◽

pp. 1369-1372

Author(s):

Kazuo Asaka ◽

Chio Ishihara ◽

Yuuji Enomoto ◽

Motoya Ito

Keyword(s):

Composite Materials ◽

Output Power ◽

Core Loss ◽

Motor Output ◽

Magnetic Composite ◽

Test Results ◽

Soft Magnetic ◽

Soft Magnetic Composite

Recently, SMC(Soft Magnetic Composite) materials were studied for their applications in many fields. We have developed a superior SMC for use as motor cores and are studying their applying effects [1]. It shows almost the same motor output power as laminated Si-steels of 0.35mm in thickness, although core loss of SMC is about 1.5 times that of the laminations. As shown in the results, the SMC motor core is sufficient for real use as a motor core. Furthermore, a 3-D shaped motor core made of SMC can improve approximately 20% of the output compared with the same size motor made of laminations.

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Rotational core loss features of soft magnetic composite materials under excitation frequencies from 5 Hz to 1000 Hz

2013 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices ◽

10.1109/asemd.2013.6780817 ◽

2013 ◽

Cited By ~ 1

Author(s):

Yong Jian Li ◽

Qing Xin Yang ◽

You Hua Wang ◽

Jian Guo Zhu ◽

Zhi Wei Lin

Keyword(s):

Composite Materials ◽

Core Loss ◽

Magnetic Composite ◽

Soft Magnetic ◽

Soft Magnetic Composite ◽

Excitation Frequencies

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High permeability and bimodal resonance structure of flaky soft magnetic composite materials

Chinese Physics B ◽

10.1088/1674-1056/ab8c3b ◽

2020 ◽

Vol 29 (7) ◽

pp. 077506

Author(s):

Xi Liu ◽

Peng Wu ◽

Peng Wang ◽

Tao Wang ◽

Liang Qiao ◽

...

Keyword(s):

Composite Materials ◽

Resonance Structure ◽

Magnetic Composite ◽

High Permeability ◽

Soft Magnetic ◽

Soft Magnetic Composite

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A novel flux switching claw pole machine with soft magnetic composite cores

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-210009 ◽

2021 ◽

pp. 1-21

Author(s):

Chengcheng Liu ◽

Qainyu Liu ◽

Shaopeng Wang ◽

Youhua Wang ◽

Gang Lei ◽

...

Keyword(s):

High Frequency ◽

Permanent Magnets ◽

Core Loss ◽

Torque Ripple ◽

Magnetic Composite ◽

Soft Magnetic ◽

The Core ◽

Soft Magnetic Composite ◽

Torque Coefficient ◽

3D Finite Element Method

This paper proposes a novel flux switching claw pole machine (FSCPM) with soft magnetic composite (SMC) cores. The proposed FSCPM holds advantages of the conventional flux switching permanent magnet machine (FSPMM) and claw pole machine (CPM) with SMC cores. As permanent magnets are installed between the stator claw pole teeth, FSCPM has good flux concentrating ability, and the air gap flux density can be significantly improved. The torque coefficient of FSCPM is relatively high due to the applied claw pole teeth and global winding. FSCPM is mechanically robust because there are no windings or PMs on its rotor. Moreover, the core loss of FSCPM is relatively low for the SMC material has lower core loss at high frequency compared with silicon steels. The topology and operational principle of FSCPM are explained first. Several main dimensions of the machine are optimized to achieve better performance, based on 3D finite element method (FEM). Furthermore, the rotor skewing technology is adopted to reduce the cogging torque and torque ripple.

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Enhanced Soft Magnetic Properties of Iron-Based Powder Cores with Co-Existence of Fe3O4–MnZnFe2O4 Nanoparticles

Metals ◽

10.3390/met8090702 ◽

2018 ◽

Vol 8 (9) ◽

pp. 702 ◽

Cited By ~ 10

Author(s):

Yuye Xie ◽

Pengfei Yan ◽

Biao Yan

Keyword(s):

Magnetic Properties ◽

Core Loss ◽

Magnetic Composite ◽

Powder Metallurgy Method ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Soft Magnetic Composite ◽

Insulation Coating ◽

Iron Based ◽

Microstructure And Magnetic Properties

An iron-based soft magnetic composite with Fe3O4-MnZnFe2O4 insulation coating has been prepared by powder metallurgy method. This work investigated the microstructure and magnetic properties of Fe/Fe3O4-MnZnFe2O4 powder cores. Scanning electron microscopy (SEM) coupled with an energy dispersive spectrometry (EDS) analysis indicated that the Fe3O4 and MnZnFe2O4 nanoparticles were uniformly coated on the surface of Fe powders. The co-existence of Fe3O4 and MnZnFe2O4 contributes to the preferable distribution of nano-sized insulation powders and excellent soft magnetic properties of soft magnetic composite (SMC) with high saturation magnetization Ms (215 A·m2/kg), low core loss (178.7 W/kg measured at 100 kHz, 50 mT), and high effective amplitude permeability of 114 (measured at 100 kHz). Overall, this work has great potential for realizing low core loss and outstanding soft magnetic properties of Fe-based powder cores.

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