Core Losses Separation of Amorphous Alloy Core

2016 ◽  
Vol 849 ◽  
pp. 91-94
Author(s):  
Shan Hong Li ◽  
Li Jun Li ◽  
De Ren Li ◽  
Zhi Chao Lu
Keyword(s):  
Amorphous Alloy ◽  
Eddy Current ◽  
High Frequency ◽  
Low Frequency ◽  
Eddy Current Loss ◽  
Hysteresis Loss ◽  
Frequency Range ◽  
Current Loss ◽  
Core Losses ◽  
Additional Loss

In this paper, the core losses of Fe80Si9B11, Fe78Si9B13 amorphous alloy cores were separated to investigate the behaviors of hysteresis loss, eddy current loss and additional loss in high frequency range. The results showed that the losses of amorphous alloy core were mainly composed of hysteresis loss in low frequency. With the increase of frequency, eddy current loss increased drastically compared with the hysteresis loss, the eddy current loss was greater than the hysteresis loss when the frequency was higher than 5 kHz and 6 kHz for amorphous alloy with the composition of Fe78Si9B13 and Fe80Si9B11, respectively. The eddy current loss proportion in total loss increased with the increment of frequency.

Effect of the Thickness of Cr Interlayer on the High-Frequency Characteristics of FeCoTa/Cr/FeCoTa Multilayers

2011 ◽  
Vol 287-290 ◽  
pp. 1356-1359
Author(s):  
Shan Dong Li ◽  
Feng Xu ◽  
Ming Liu ◽  
Yi Hu ◽  
Jian Peng Wu ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Eddy Current ◽  
High Frequency ◽  
Anisotropy Field ◽  
Eddy Current Loss ◽  
Film Sample ◽  
Current Loss ◽  
Ferromagnetic Layers ◽  
Magnetic Decoupling ◽  
Ferromagnetic Resonance Frequency

The effect of non-ferromagnetic Cr interlayer on the high-frequency ferromagnetic properties (HFFMPs) was investigated by use of FeCoTa/Cr/ FeCoTa triple layered films. In conventional thought, the metal interlayer gives rise to a high eddy current loss and therefore a deteriorated HFFMP. However, it is found that HFFMPs depend on the thickness of Cr interlayer. The HFFPMs are improved by Cr-interlayer with a thickness less than 12 nm (sample C1). Comparing with the Cr-interlayer-free FeCoHf single layered film (sample C0), the magnetic anisotropy field of C1 dramatically increases from 185 Oe for C0 to 558 Oe for C1. As a consequence, a high ferromagnetic resonance frequency over than 3 GHz is achieved for sample C1. When the thickness of Cr-interlayer is more than 120 nm (C2), the HFFMPs are reduced due to the increase of eddy current loss and magnetic decoupling between the ferromagnetic layers.

The influence of atmosphere on hysteresis loss and eddy current loss of low loss Mn‐Zn ferrites (abstract)

1991 ◽  
Vol 69 (8) ◽  
pp. 5369-5369
Author(s):  
S. H. Chen ◽  
M. J. Tung ◽  
W. B. Shu ◽  
C. S. Liu ◽  
M. Y. Ke
Keyword(s):  
Eddy Current ◽  
Eddy Current Loss ◽  
Hysteresis Loss ◽  
Low Loss ◽  
Current Loss

scholarly journals Prediction of 3-D High-Frequency Eddy Current Loss in Rotor Magnets of SPM Machines

2016 ◽  
Vol 52 (9) ◽  
pp. 1-10 ◽  
Author(s):  
Sreeju S. Nair ◽  
Jiabin Wang ◽  
Liang Chen ◽  
Robert Chin ◽  
Iakovos Manolas ◽  
...  
Keyword(s):  
Eddy Current ◽  
High Frequency ◽  
Eddy Current Loss ◽  
Current Loss

Three-dimensional optimization of meander inductor

2020 ◽  
Vol 64 (1-4) ◽  
pp. 343-350
Author(s):  
Takahiro Sasaki ◽  
Hajime Igarashi
Keyword(s):  
Eddy Current ◽  
High Frequency ◽  
Three Dimensional ◽  
Optimization Method ◽  
Magnetic Core ◽  
Eddy Current Loss ◽  
Current Loss ◽  
Micro Genetic Algorithm ◽  
Meander Line ◽  
Dimensional Optimization

This paper presents a three-dimensional optimization method of a meander inductor for high-frequency circuits. The proposed method determines the structure of the meander line using the micro-genetic algorithm in which the eddy current loss and inductance are evaluated by finite element method. It is shown that the total loss composed of the eddy current loss in the magnetic core and Joule loss in the meander line is successfully minimized keeping the inductance to the specified value by this optimization.

The FEM Calculation of Iron Loss in the Active Magnetic Bearing

2014 ◽  
Author(s):  
Peicai Wu ◽  
Xingnan Liu ◽  
Guojun Yang ◽  
Zhengang Shi
Keyword(s):  
Eddy Current ◽  
Power Loss ◽  
Core Loss ◽  
Eddy Current Loss ◽  
Magnetic Bearing ◽  
Silicon Steel ◽  
Hysteresis Loss ◽  
Active Magnetic Bearing ◽  
Iron Loss ◽  
Current Loss

The active magnetic bearing (AMB) is a new kind of high-performance bearing which suspends the rotor with controlled electromagnetic force. It was chosen to support the rotor of the helium blower in HTR-PM instead of conventional bearings. The power losses in the active magnetic bearings compose of three components: copper loss, iron loss and windage loss. In this paper, the iron loss, which composes of the eddy current loss and the hysteresis loss, is researched. The power loss of silicon steel lamination (35H300) was measured. Experimental data was taken over a range of 50Hz to 25,000Hz (sinusoidal current) for several magnetic field intensities. According to the experimental data, the eddy current loss and hysteresis loss increase with the frequency. And the hysteresis loss in the silicon steel lamination occupies the major part when the frequency of current is low, however the growth rate of eddy current is much faster than that of the hysteresis loss. And the FEM calculation of power loss in the magnetic bearing, which rotor and stator are made from silicon steel lamination (35H300), is also presented. The result shows the core loss of magnetic bearing also follow the separation theory. We can separate the core loss of magnetic bearing into two parts: hysteresis loss and eddy current loss. It will be very useful to calculate the power loss in the magnetic bearing.

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