scholarly journals In situ Observation of Domain Walls in Electrical Steel Sheet by Lorentz Microscopy under External AC Magnetic Field

Materia Japan ◽  
2006 ◽  
Vol 45 (12) ◽  
pp. 891-891
Author(s):  
Zentaro Akase ◽  
Daisuke Shindo ◽  
Masao Inoue ◽  
Akira Taniyama
Author(s):  
Tsukuru KINOSHITA ◽  
Takashi TODAKA ◽  
Takeru SATO ◽  
Hiroyasu SHIMOJI

Author(s):  
Heesung Yoon ◽  
Chang Seop Koh

Purpose – The purpose of this paper is to present the vector magnetic properties of the electrical steel sheet and investigate its influences on the magnetic field and iron loss distributions for the electrical machines. Design/methodology/approach – The vector magnetic property of the electrical steel sheet is measured by using a two-dimensional single sheet tester and modelled through an E&S vector hysteresis model to be applied to finite element analysis. Findings – The magnetic field and iron loss distributions are calculated by finite element analysis combined with the E&S vector hysteresis model for the three-phase transformer and induction motor models. Originality/value – The influences of the vector magnetic property on the electrical machines are verified by comparing with the numerical results from a scalar magnetic property.


2012 ◽  
Vol 721 ◽  
pp. 84-89
Author(s):  
Tsugunori Kanada ◽  
Akifumi Kutsukake ◽  
Yukihito Kido ◽  
Tetsu Ikeda ◽  
Masato Enokizono

At high AC field strength, BH loop tends to twist slightly near the tip point. It results in apparent decrease of iron loss because the overturned parts introduce negative iron loss value. In order to correct this error the phase difference between flux density and magnetic field strength needs to be eliminated. We studied on the problem and got satisfactory results.


2012 ◽  
Vol 132 (11) ◽  
pp. 1033-1038
Author(s):  
Yuichiro Kai ◽  
Yuji Tsuchida ◽  
Takashi Todaka ◽  
Masato Enokizono

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