The core used to build power inductors and transformers are soft magnetic materials. When there is alternating external field, the magnetic moments rotate and consume energy, which is the core loss. The core loss depends on the AC flux frequency, amplitude, waveform, DC bias and temperature. Th...
HIGH MAGNETIC FLUX DENSITY GRAIN ORIENTED SILICON STEEL SHEET EXCELLENT IN HIGH MAGNETIC FIELD CORE LOSSPROBLEM TO BE SOLVED: To produce a high magnetic flux density grain oriented silicon steel sheet excellent in high magnetic field core loss....
PURPOSE: To produce an amorphous alloy sheet having high saturation magnetic flux density and low iron loss characteristic by rapidly solidifying a molten Fe-Co-Si-B alloy containing at least one kind among specific small amounts of Sn, Cu, and S into sheet-like state. ;CONSTITUTION: A molte...
Photon Flux and Repetition Rate The photon flux as a function of the repetition rate of existing HHG light sources has been nicely reviewed in the literature.56–58 In all optical experiments, the repetition rate of HHG can go beyond 100 MHz.59 However, until now, repetition rates only up ...
Above the irreversibility field, the flux motion is thermally activated, where the activation energy U0 is going to zero at the extrapolated zero-kelvin Hirr value. The anisotropy of the critical current density Jc is both influenced by the Hc2 anisotropy (and therefore by multi-band effects) ...
In an electrical transformer, there are 2 classes of losses that determine the efficiency, core loss and copper loss. Core loss is the losses due to the core material during the electrical voltage transformation and is dependent on the flux density of the core. Core loss is not dependent on...
(the factor ½ is owing to the fact that YBCO has two CuO2-planes per unit cell). In this calculation, we assumed a constantV= 0.173 nm3, owing to the fact that in the range of oxygen doping explored, the variation inVis rather small (< 1%)35while large variations innHoccur. ...
However, high-speed applications feature a wide flux-weakening region, where advanced induction machines could bring benefits in terms of system-level optimization. This paper gives an overview the technological challenges for high-speed drives with induction machines, materials, simulations and future ...
a Electron flux per unit solid angle. As a damping factor to sin χ(u), one more important function related to the granularity of the image recording medium should be introduced, which is called the modulation transfer function (MTF).59, 74 This will be discussed later in Sect...
This distributed air gap property ensures that the energy are stored evenly through the core. This makes the core have a better temperature stability. Gapped or slitted ferrites stores the energy in the localized air gap but with much more flux leakage causing localized gap loss and interference...