Loss Separation Model: A Tool for Improvement of Soft Magnetic Materials

2016 ◽  
Vol 869 ◽  
pp. 596-601 ◽  
Author(s):  
Marcos Flavio de Campos
Keyword(s):  
Magnetic Material ◽  
Magnetic Materials ◽  
High Frequency ◽  
Eddy Currents ◽  
Soft Magnetic Materials ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Soft Magnetic ◽  
Physical Reasoning ◽  
Separation Model

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.

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

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.

scholarly journals Effect of the Temperature on the Magnetic and Energetic Properties of Soft Magnetic Composite Materials

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4400
Author(s):  
Luca Ferraris ◽  
Fausto Franchini ◽  
Emir Pošković ◽  
Marco Actis Grande ◽  
Róbert Bidulský
Keyword(s):  
Magnetic Materials ◽  
Eddy Currents ◽  
Electrical Machines ◽  
Soft Magnetic Materials ◽  
Magnetic Composite ◽  
Soft Magnetic ◽  
Soft Magnetic Composite ◽  
Magnetic Performance ◽  
Magnetic Circuits ◽  
Energetic Characterization

In recent years, innovative magnetic materials have been introduced in the field of electrical machines. In the ambit of soft magnetic materials, laminated steels guarantee good robustness and high magnetic performance but, in some high-frequency applications, can be replaced by Soft Magnetic Composite (SMC) materials. SMC materials allow us to reduce the eddy currents and to design innovative 3D magnetic circuits. In general, SMCs are characterized at room temperature, but as electrical machines operate at high temperature (around 100 °C), an investigation analysis of the temperature effect has been carried out on these materials; in particular, three SMC samples with different binder percentages and process parameters have been considered for magnetic and energetic characterization.

scholarly journals Soft Magnetic Materials in High-Frequency, High-Power Conversion Applications

JOM ◽  
2012 ◽  
Vol 64 (7) ◽  
pp. 772-781 ◽  
Author(s):  
Alex M. Leary ◽  
Paul R. Ohodnicki ◽  
Michael E. McHenry
Keyword(s):  
Magnetic Materials ◽  
High Power ◽  
High Frequency ◽  
Power Conversion ◽  
Soft Magnetic Materials ◽  
Soft Magnetic

Barkhausen Noise Measurements in Amorphous and Nanocrystalline FINEMET Type Alloys

2007 ◽  
Vol 537-538 ◽  
pp. 291-296
Author(s):  
Z. Balogh ◽  
Lajos Daróczi ◽  
Z. Erdélyi ◽  
S. Szabó ◽  
R. Juhász ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Critical Exponents ◽  
Probability Distributions ◽  
Soft Magnetic Materials ◽  
Barkhausen Noise ◽  
Observable Effect ◽  
Soft Magnetic ◽  
Noise Measurements

Barkhausen noise properties of amorphous and nanocrystallized FINEMET type soft magnetic materials are investigated. It is obtained that the amorphous-nanocrystalline tranformation has a well observable effect on both the root main square, RMS, values and the critical exponents of the probability distributions of peak heights and durations.

Sign in / Sign up

Export Citation Format

Share Document