Study of transformer magnetic field considering different temperature and DC bias of electrical steel sheet

2019 ◽  
Vol 59 (2) ◽  
pp. 669-677
Author(s):  
Dezhi Chen ◽  
Zhiyu Feng ◽  
Baodong Bai ◽  
Byung-il Kwon
Keyword(s):  
Magnetic Field ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Dc Bias ◽  
Electrical Steel Sheet

scholarly journals Heat Treatment in Magnetic Field for Non-oriented Electrical Steel Sheet

2017 ◽  
Vol 25 (2) ◽  
pp. 162-167 ◽  
Author(s):  
Tsukuru KINOSHITA ◽  
Takashi TODAKA ◽  
Takeru SATO ◽  
Hiroyasu SHIMOJI
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Electrical Steel Sheet

Vector magnetic property of electrical steel sheet and its influence on distributions of magnetic field and iron loss for electrical machines

2013 ◽  
Vol 33 (1/2) ◽  
pp. 14-27 ◽  
Author(s):  
Heesung Yoon ◽  
Chang Seop Koh
Keyword(s):  
Magnetic Field ◽  
Magnetic Property ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Electrical Machines ◽  
Iron Loss ◽  
Element Analysis ◽  
Content Type ◽  
Electrical Steel Sheet ◽  
The Magnetic Field

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.

Measurement Research on Magnetic Properties of Electrical Steel Sheet under DC Bias Conditions

2011 ◽  
Vol 383-390 ◽  
pp. 5017-5022
Author(s):  
Bao Dong Bai ◽  
Chong Li
Keyword(s):  
Magnetic Properties ◽  
Magnetization Curve ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Sheet Steel ◽  
Operating Characteristics ◽  
Accurate Analysis ◽  
Dc Bias ◽  
Transformer Model ◽  
Electrical Steel Sheet

In order to acquire the magnetic properties parameter of transformer core under DC bias conditions, also to reveal the accurate analysis and judgment on the operating characteristics of transformer under the DC bias, this thesis utilized two Epstein Square devices to proceed the experiment and measurement on magnetization curve of some certain transformer which used the 30ZH120 electrical steel sheet under four different lap ways. This paper provided the measure method of bias magnetic density under laboratory conditions, meanwhile it offered the bias magnetization curve and the loss curve. The measure consequence comparison between the electrical sheet steel and the transformer model showed that direct oblique way lap can be more realistically reflected the magnetization characteristic of transformer which worked in the DC bias conditions. For Large Transformer which was difficult to measure the magnetic properties provided a convenient measurement methods, and offered the experiment facts to the theory study of the DC bias transformers.

Experimental Study on the Iron Loss Curve at High Field Strength of Non-Oriented Electrical Steel Sheet

2012 ◽  
Vol 721 ◽  
pp. 84-89
Author(s):  
Tsugunori Kanada ◽  
Akifumi Kutsukake ◽  
Yukihito Kido ◽  
Tetsu Ikeda ◽  
Masato Enokizono
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
High Field ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Iron Loss ◽  
High Field Strength ◽  
Apparent Decrease ◽  
Ac Field ◽  
Electrical Steel Sheet

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.

Examination of Measurement Method for Magnetostriction of Electrical Steel Sheet with Lock-in Amplifier

2012 ◽  
Vol 132 (11) ◽  
pp. 1033-1038
Author(s):  
Yuichiro Kai ◽  
Yuji Tsuchida ◽  
Takashi Todaka ◽  
Masato Enokizono
Keyword(s):  
Measurement Method ◽  
Steel Sheet ◽  
Electrical Steel ◽  
Lock In ◽  
Electrical Steel Sheet
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