Results 31 to 40 of about 8,569,882 (345)

Winding loss analysis of planar spiral coil and its structure optimization technique in wireless power transfer system

open access: yesScientific Reports, 2022
Circular planar spiral coils are wildly used for the magnetic coupling system in a high-frequency wireless power transfer system. The loss of the magnetic coupling system usually takes dominance in the whole system. This paper built the calculation model
Qingbin Chen   +3 more
doaj   +1 more source

AC loss and contact resistance in REBCO CORC®, Roebel, and stacked tape cables

open access: yesSuperconductors Science and Technology, 2020
Many high-temperature superconductor (HTS) applications require superconducting cables with high currents while operating in an alternating magnetic field.
K. Yagotintsev   +8 more
semanticscholar   +1 more source

Review of the AC loss computation for HTS using H formulation [PDF]

open access: yesSuperconductors Science and Technology, 2019
This article presents a review of the finite-element method (FEM) model based on the H formulation of Maxwell’s equations used to calculate AC losses in high-temperature superconductor (HTS) tapes, cables and windings for different applications.
B. Shen, F. Grilli, T. Coombs
semanticscholar   +1 more source

Numerical study on AC loss properties of HTS cable consisting of YBCO coated conductor for HTS power devices [PDF]

open access: yes, 2018
High-current high temperature superconducting (HTS) cables have been developed for use in HTS power devices. This paper presented the structures of HTS cables, including Conductor on Round Core (CORC) cable, Twisted Stacked-tape Conductor (TSTC) cable ...
Yuan, Weijia   +7 more
core   +2 more sources

Fully superconducting machine for electric aircraft propulsion: study of AC loss for HTS stator [PDF]

open access: yesSuperconductors Science and Technology, 2019
Fully superconducting machines provide the high power density required for future electric aircraft propulsion. However, superconducting windings generate AC losses in AC electrical machine environments.
Fangjing Weng   +4 more
semanticscholar   +1 more source

Ac losses in superconducting coils

open access: yesElectrical Engineering in Japan, 1991
AbstractAC superconducting wire is being developed for such electrical equipment as superconducting transformers and superconducting generators. AC loss reduction is of primary concern in the development of such high‐efficiency equipment. In reducing ac losses, it is necessary to develop assessment methods for ac loss in test samples which have shapes ...
Shirabe Akita   +2 more
openaire   +2 more sources

AC loss calculation in REBCO coils or stacks by solving the equation of motion for current using an integration approach

open access: yesSuperconductors Science and Technology, 2020
The flux motion and its collective behaviour known as AC loss is the basic characteristic of high temperature superconducting (HTS) materials and controls the economic efficiency, stability and magnetic field uniformity of superconducting equipment.
L. Lai, C. Gu
semanticscholar   +1 more source

Additive Manufacturing of Shaped Profile Windings for Minimal AC Loss in Electrical Machines

open access: yesIEEE transactions on industry applications, 2020
Metal additive manufacturing enables production of copper and aluminium parts exhibiting unmatched geometric freedom, giving rise to new possibilities in the winding design of electrical machines and wound passive components.
N. Simpson   +3 more
semanticscholar   +1 more source

Low energy dissipation superconducting flywheel based on structural design

open access: yesAIP Advances, 2022
Superconducting flywheels have potential application value in aerospace field, and its suspension time is a key factor. Alternating Current (AC) loss associated with rotation is an important parameter that affects the suspension time, so it is very ...
Yanbin Ma   +3 more
doaj   +1 more source

Simulation of Dynamic Resistance and Total Loss of HTS CORC Cables

open access: yesIEEE Access, 2023
In some high temperature superconducting (HTS) applications, HTS coated conductors carry DC current under external AC magnetic fields. Dynamic resistance occurs when the amplitude of the magnetic field is greater than the threshold magnetic field of the ...
Yukai Qiao   +4 more
doaj   +1 more source

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