scholarly journals Experimental Modeling of Magnetic Hysteresis Power Loss of Terfenol-D at Different Values of Frequency and Mechanical Pre-Stress

2021 ◽  
Vol 1 (1) ◽  
pp. 15-31
Author(s):  
Soheil Talebian
Keyword(s):  
Power Loss ◽  
Magnetic Hysteresis ◽  
Experimental Modeling

Remagnetization Core Losses In The Massive Amorphous FeCoYb Alloy

2017 ◽  
Vol 68 (4) ◽  
pp. 698-700
Author(s):  
Katarzyna Bloch ◽  
Marcin Nabialek ◽  
Konrad Gruszka
Keyword(s):  
Magnetic Field ◽  
Amorphous Alloy ◽  
Power Loss ◽  
Eddy Currents ◽  
Magnetic Hysteresis ◽  
Bulk Amorphous Alloy ◽  
Field Frequency ◽  
Magnetic Field Frequency ◽  
Core Losses ◽  
Additional Losses

In this paper were studied the influence of magnetic field frequency and induction on the total core power loss � which is divided into eddy current loss, hysteresis loss and anomally losses of the bulk amorphous alloy. The total core power loss of the investigated bulk amorphous alloy increases with magnetic field frequency and peak induction. It follows a power relation similar to what has been observed in classical ribbons. In the investigated alloy in addition to losses due to magnetic hysteresis and eddy currents, other additional losses are present. However additional losses, emerging simultaneously to the component associated with migration relaxations are very weakly dependent on the frequency and temperature.

scholarly journals Effects of wound toroidal core dimensional and geometrical parameters on measured magnetic properties of electrical steel

2013 ◽  
Vol 10 (3) ◽  
pp. 459-471 ◽  
Author(s):  
Branko Koprivica ◽  
Alenka Milovanovic ◽  
Milic Djekic
Keyword(s):  
Magnetic Properties ◽  
Hysteresis Loop ◽  
Power Loss ◽  
Electrical Steel ◽  
Magnetic Hysteresis ◽  
Magnetic Hysteresis Loop ◽  
Specific Power ◽  
Geometrical Parameters ◽  
Secondary Voltage ◽  
Sinusoidal Shape

The aim of this paper is to present the results of measurements for the magnetic hysteresis loop and the specific power loss of the electrical steel obtained with the toroidal samples of various dimensions. All samples have been made of the same material. Numerous measurements have been performed after the annealing of the samples. The measurements have been performed with control of the sinusoidal shape of the secondary voltage. Differences between the results of measurements have been analyzed. Change in the measured results, e.g. the shape of the hysteresis loop or the specific power loss has been correlated to the dimensions of the sample.

High-resolution scanning electron microscopy of thin-film magnetic media of magnetic recording disk

1992 ◽  
Vol 50 (2) ◽  
pp. 1334-1335
Author(s):  
K. Ogura ◽  
H. Nishioka ◽  
N. Ikeo ◽  
T. Kanazawa ◽  
J. Teshima
Keyword(s):  
Thin Film ◽  
Fine Structure ◽  
High Resolution ◽  
Magnetic Recording ◽  
High Performance ◽  
Magnetic Hysteresis ◽  
Grain Structure ◽  
Magnetic Media ◽  
Cross Sectional ◽  
Resolution Observation

Structural appraisal of thin film magnetic media is very important because their magnetic characters such as magnetic hysteresis and recording behaviors are drastically altered by the grain structure of the film. However, in general, the surface of thin film magnetic media of magnetic recording disk which is process completed is protected by several-nm thick sputtered carbon. Therefore, high-resolution observation of a cross-sectional plane of a disk is strongly required to see the fine structure of the thin film magnetic media. Additionally, observation of the top protection film is also very important in this field.Recently, several different process-completed magnetic disks were examined with a UHR-SEM, the JEOL JSM 890, which consisted of a field emission gun and a high-performance immerse lens. The disks were cut into approximately 10-mm squares, the bottom of these pieces were carved into more than half of the total thickness of the disks, and they were bent. There were many cracks on the bent disks. When these disks were observed with the UHR-SEM, it was very difficult to observe the fine structure of thin film magnetic media which appeared on the cracks, because of a very heavy contamination on the observing area.

System-in-Packages with Low Power Loss for Future Voltage Regulators

2010 ◽  
Vol 130 (9) ◽  
pp. 1630-1635
Author(s):  
Takayuki Hashimoto ◽  
Tetsuya Kawashima ◽  
Masaki Shiraishi ◽  
Noboru Akiyama ◽  
Tomoaki Uno ◽  
...  
Keyword(s):  
Low Power ◽  
Power Loss ◽  
Voltage Regulators

A Novel Power Loss Calculation Method for Power Magnetic Components in Power Converters

2021 ◽  
Vol 141 (1) ◽  
pp. 69-75
Author(s):  
Yuki Ishikura ◽  
Tatsuya Hosotani ◽  
Masayoshi Yamamoto
Keyword(s):  
Calculation Method ◽  
Power Loss ◽  
Power Converters ◽  
Loss Calculation ◽  
Magnetic Components

Operation of Voltage Reactive Power Control Devices based on Cooperation between Two-Voltage Class Transmission Network with PV Systems to Reduce Power Loss

2020 ◽  
Vol 140 (6) ◽  
pp. 484-494
Author(s):  
Akihisa Kaneko ◽  
Shinya Yoshizawa ◽  
Yasuhiro Hayashi ◽  
Shuhei Sugimura ◽  
Yoshinobu Ueda ◽  
...  
Keyword(s):  
Power Control ◽  
Power Loss ◽  
Reactive Power ◽  
Transmission Network ◽  
Reactive Power Control ◽  
Pv Systems ◽  
Control Devices

Study on Power Fluctuation Dispatch and Capacity Design of Short Period Power Fluctuation Compensation System in Consideration of Power Loss

2014 ◽  
Vol 134 (1) ◽  
pp. 57-63
Author(s):  
Akihiro Teguri ◽  
Shunsuke Kawachi ◽  
Jumpei Baba ◽  
Eisuke Shimoda ◽  
Takayuki Sugimoto
Keyword(s):  
Power Loss ◽  
Compensation System ◽  
Capacity Design ◽  
Power Fluctuation ◽  
Short Period

Structural and Magnetic Hysteresis Properties of Co-Zr Substituted Hexagonal Barium Ferrites

2015 ◽  
Vol 7 (1) ◽  
pp. 1346-1351
Author(s):  
Ch.Gopal Reddy ◽  
Ch. Venkateshwarlu ◽  
P. Vijaya Bhasker Reddy
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Magnetic Hysteresis ◽  
Grain Morphology ◽  
Hexagonal Structure ◽  
Ion Composition ◽  
X Ray Diffraction ◽  
Ceramic Method ◽  
Barium Ferrites ◽  
Xrd Patterns

Co-Zr substituted M-type hexagonal barium ferrites, with chemical formula BaCoxZrxFe12-2xO19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), have been synthesized by double sintering ceramic method. The crystallographic properties, grain morphology and magnetic properties of these ferrites have been investigated by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). The XRD patterns confirm the single phase with hexagonal structure of prepared ferrites. The magnetic properties have been investigated as a function of Co and Zr ion composition at an applied field in the range of 20 KOe. These studies indicate that the saturation magnetization (Ms) in the samples increases initially up to the Co-Zr composition of x=0.6 and decreases thereafter. On the other hand, the coercivity (Hc) and Remanent magnetization (Mr) are found to decrease continuously with increasing Co-Zr content. This property is most useful in permanent magnetic recording. The observed results are explained on the basis of site occupation of Co and Zr ions in the samples.

Correction: Cryogenic Characterization and Modeling of Silicon Superjunction MOSFET for Power Loss Estimation

2020 ◽  
Author(s):  
Md Maksudul Hossain ◽  
Arman Ur Rashid ◽  
Rosten Sweeting ◽  
Yuqi Wei ◽  
Haider Mhiesan ◽  
...  
Keyword(s):  
Power Loss ◽  
Loss Estimation
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