scholarly journals Influence of interlaminar flux between cores on iron loss in three‐legged wound transformer core

2021 ◽  
Vol 214 (3) ◽  
Author(s):  
Hirotaka Inoue ◽  
Takeshi Omura ◽  
Hiroi Yamaguchi ◽  
Kunihiro Senda
Keyword(s):  
Iron Loss ◽  
Transformer Core

scholarly journals Iron Loss and Acoustic Noise of Model Transformer Core under DC Biased Magnetization

2012 ◽  
Vol 36 (2) ◽  
pp. 135-140
Author(s):  
H. Inoue ◽  
T. Ueyama ◽  
H. Yamaguchi ◽  
S. Okabe ◽  
M. Ishida
Keyword(s):  
Acoustic Noise ◽  
Iron Loss ◽  
Transformer Core

Calculation and validation of iron loss in laminated core of power and distribution transformers

2013 ◽  
Vol 33 (1/2) ◽  
pp. 137-146 ◽  
Author(s):  
Xiaoyan Wang ◽  
Zhiguang Cheng ◽  
Li Lin ◽  
Jianmin Wang
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Core Loss ◽  
Iron Loss ◽  
Magnetic Flux Density ◽  
Content Type ◽  
The Core ◽  
Distribution Transformers ◽  
The Impact ◽  
Transformer Core

Purpose – The purpose of this paper is to present a simple method to analyze the iron loss in the laminated core of power and distribution transformers. Design/methodology/approach – This paper presents a practical method to calculate the no-load loss in the transformer cores. Considering the non-uniformity of the magnetic flux density in the corner areas of the Epstein frames will affect the measurement precision of the Wt-B curves then further affect the core loss calculation in FEM, a dual-Epstein frame method is used to measure the Wt-B curves with the Epstein sample stripes cutting by different angles to the rolling direction. A 2D FEM that considers the type of joints of the core and eddy current effect in the laminations is used to analyze the core loss with multi-angle Wt-B curves. Findings – The impact of lamination thickness, size of gaps and type of joint of the core are considered. Considering the no-load testing conditions, harmonics in the exciting currents are taken into account. Originality/value – Harmonic wave of magnetic flux density in the transformer core is calculated and the core loss in the joint region is calculated by the loss curve measured with dual-Epstein frame. It makes the calculation result of transformer core loss more exactly.

Influence of Interlaminar Flux between Cores on Iron Loss in Three-legged Wound Transformer Core

2021 ◽  
Vol 141 (4) ◽  
pp. 226-232
Author(s):  
Hirotaka Inoue ◽  
Takeshi Omura ◽  
Hiroi Yamaguchi ◽  
Kunihiro Senda
Keyword(s):  
Iron Loss ◽  
Transformer Core

Measuring Iron Loss of the Electrical Steel Sheets with Different Grades under Compressive Stress Normal to the Surface

2019 ◽  
Vol 139 (4) ◽  
pp. 190-196
Author(s):  
Shinya Urata ◽  
Yoshitaka Maeda ◽  
Hideo Nakai ◽  
Yuuya Takeuchi ◽  
Kyyoul Yun ◽  
...  
Keyword(s):  
Compressive Stress ◽  
Electrical Steel ◽  
Iron Loss ◽  
Steel Sheets ◽  
Electrical Steel Sheets
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