TITLE

Measurement of magnetic losses by thermal method applied to power ferrites at high level of induction and frequency

AUTHOR(S)
Loyau, V.; Lo Bue, M.; Mazaleyrat, F.
PUB. DATE
February 2009
SOURCE
Review of Scientific Instruments;Feb2009, Vol. 80 Issue 2, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Classically, low frequency losses in soft magnetic materials and ferrites in particular are measured by flux metric method under sinusoidal waveform excitation voltage. However, in typical application of modern power electronics, the frequency currently exceeds 100 kHz. This feature is at the origin of a difficulty: the phase shift between current and voltage can be disturbed by current probe delay. Thus, the results can be affected by large errors. As a consequence, it becomes more and more important to develop alternative methods to measure losses in magnetic materials. It is proposed to use calorimetric method which is by principle free of the above mentioned problems. The experimental device is described in details and the results are reported for experiments conducted on a commercial Mn–Zn ferrite under sinusoidal waveform regime for frequencies varying from 10 to 200 kHz. Comparisons with flux metric measurement show that significant differences appear typically for Bf products above 5000 V/m2 (50 kHz×100 mT).
ACCESSION #
36823170

 

Related Articles

  • Nonlinear multiferroic phase shifters for microwave frequencies. Ustinov, Alexey B.; Kalinikos, Boris A.; Srinivasan, G. // Applied Physics Letters;2/3/2014, Vol. 104 Issue 5, p052911-1 

    A nonlinear microwave phase shifter based on a planar multiferroic composite has been studied. The multiferroic structure is fabricated in the form of a bilayer consisting of yttrium iron garnet and barium strontium titanate. The principle of operation of the device is based on the linear and...

  • Characteristic analysis of microstrip line on longitudinally-magnetized ferrite substrate. YANG Lin-ying; LIU Jian-mei // Journal of Measurement Science & Instrumentation;Jun2014, Vol. 5 Issue 2, p48 

    Based on a duality relationship between magnetic and dielectric substrates, the characteristic impedance, propagation content and phase shift characteristic of microstrip line on longitudinally-ferrite substrates are researched. The conclusion can be drawn that they are proportional to bandwidth...

  • A simple domain model of flux reversal in ferrites. Avery, R. K.; DeFord, J. F.; Kamin, G.; Turner, W. C.; Zentler, J. M. // Journal of Applied Physics;5/1/1990, Vol. 67 Issue 9, p5562 

    Presents a simple domain model of flux reversal in ferrites. Requirement in the design of efficient linear induction accelerators; Assumptions on the magnetization model; Comparison of the model with experimental data.

  • Dynamic behavior of a superconducting flux qubit excited by a series of electromagnetic pulses. Kiyko, A. S.; Omelyanchouk, A. N.; Shevchenko, S. N. // Low Temperature Physics;Dec2007, Vol. 33 Issue 12, p1015 

    We study theoretically the behavior of a superconducting flux qubit subjected to a series of electromagnetic pulses. The possibility of controlling the system state via changing the parameters of the pulse is studied. We calculated the phase shift in the tank circuit weakly coupled to the qubit...

  • Head-on collision of magnetoacoustic solitary waves in magnetized quantum electron-positron-ion plasma. Ruan, Shi-Sen; Wu, Shan; Raissan, Majid; Cheng, Ze // Astrophysics & Space Science;Aug2013, Vol. 346 Issue 2, p431 

    This article presents the first study of the head-on collision between two magnetoacoustic solitary waves (MASWs) in magnetized quantum plasma consisting of electrons, positrons, and ions, using the extended Poincaré-Lighthill-Kou (PLK) method. The effects of the magnetic field intensity, the...

  • Observation of the magnetic flux and three-dimensional structure of skyrmion lattices by electron holography. Park, Hyun Soon; Yu, Xiuzhen; Aizawa, Shinji; Tanigaki, Toshiaki; Akashi, Tetsuya; Takahashi, Yoshio; Matsuda, Tsuyoshi; Kanazawa, Naoya; Onose, Yoshinori; Shindo, Daisuke; Tonomura, Akira; Tokura, Yoshinori // Nature Nanotechnology;May2014, Vol. 9 Issue 5, p337 

    Skyrmions are nanoscale spin textures that are viewed as promising candidates as information carriers in future spintronic devices. Skyrmions have been observed using neutron scattering and microscopy techniques. Real-space imaging using electrons is a straightforward way to interpret spin...

  • Non-reciprocal phase shift induced by an effective magnetic flux for light. Tzuang, Lawrence D.; Fang, Kejie; Nussenzveig, Paulo; Fan, Shanhui; Lipson, Michal // Nature Photonics;Sep2014, Vol. 8 Issue 9, p701 

    Photons are neutral particles that do not interact directly with a magnetic field. However, recent theoretical work has shown that an effective magnetic field for photons can exist if the phase of light changes with its direction of propagation. This direction-dependent phase indicates the...

  • Exotic magnetic response of superconducting wires subject to synchronous and asynchronous oscillating excitations. Ruiz, H. S.; Badía-Majós, A. // Journal of Applied Physics;May2013, Vol. 113 Issue 19, p193906 

    The time-dependent local electromagnetic properties of a type-II superconducting wire subject to the concomitant action of an ac transport current and an oscillating transverse magnetic field in synchronous and asynchronous regimes are thoroughly studied under the critical state approach....

  • Miniature atomic magnetometer integrated with flux concentrators. Griffith, W. Clark; Jimenez-Martinez, Ricardo; Shah, Vishal; Knappe, Svenja; Kitching, John // Applied Physics Letters;1/12/2009, Vol. 94 Issue 2, pN.PAG 

    High permeability magnetic flux concentrators are used to enhance the sensitivity of an atomic magnetometer operating in the spin-exchange relaxation-free regime. The magnetometer uses a millimeter scale 87Rb vapor cell and either mu-metal or Mn–Zn ferrite flux concentrators. The measured...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics