Determination of Complex Permeability of Silicon Steel for Use in High-Frequency Modeling of Power Transformers

2008 ◽  
Vol 44 (4) ◽  
pp. 438-444 ◽  
Author(s):  
K.G.N.B. Abeywickrama ◽  
T. Daszczynski ◽  
Y.V. Serdyuk ◽  
S.M. Gubanski
Keyword(s):  
High Frequency ◽  
Silicon Steel ◽  
Power Transformers ◽  
Complex Permeability

Magnetic Permeability and Relaxation Frequency in High Frequency Magnetic Materials.

2001 ◽  
Vol 674 ◽  
Author(s):  
M.I. Rosales ◽  
H. Montiel ◽  
R. Valenzuela
Keyword(s):  
High Frequency ◽  
Domain Walls ◽  
Magnetocrystalline Anisotropy ◽  
Low Frequency ◽  
Frequency Dispersion ◽  
Anisotropy Constant ◽  
Relaxation Frequency ◽  
Resonance Relaxation ◽  
Frequency Behavior

ABSTRACTAn investigation of the frequency behavior of polycrystalline ferrites is presented. It is shown that the low frequency dispersion (f < 10 MHz) of permeability is associated with the bulging of pinned domain walls, and has a mixed resonance-relaxation character, closer to the latter. It is also shown that there is a linear relationship between the magnetocrystalline anisotropy constant, K1, and the relaxation frequency. The slope of this correlation depends on the grain size. Such a relationship could allow the determination of this basic parameter from polycrystalline samples.

Core loss behavior in high frequency high power transformers—II: Arbitrary excitation

2012 ◽  
Vol 4 (3) ◽  
pp. 033113 ◽  
Author(s):  
E. Agheb ◽  
M. A. Bahmani ◽  
H. K. Høidalen ◽  
T. Thiringer
Keyword(s):  
High Power ◽  
High Frequency ◽  
Core Loss ◽  
Power Transformers

High Frequency Ultrasonic Measurements

1988 ◽  
Vol 21 (5) ◽  
pp. 133-136
Author(s):  
N Zarsav
Keyword(s):  
High Frequency ◽  
Polymer Coating ◽  
Steel Sheet ◽  
Lamb Waves ◽  
Thin Plates ◽  
Design Features ◽  
Degree Of Cure ◽  
Double Probe ◽  
Ultrasonic Measurements

The use of high frequency ultrasonic Lamb waves to measure the thickness of thin plates and foils, is discussed and the feasibility of their application to the determination of the degree of cure of polymer coating on coated tin plated steel sheet (as used by the food can industry) is evaluated. The paper also discusses briefly the design features of the purpose built precision double probe ultrasonic goniometer used to carry out these measurements.

Sign in / Sign up

Export Citation Format

Share Document