Results 31 to 40 of about 13,090 (198)

Determination of Parameters of Asynchronous Electric Machines with Asymmetrical Windings of Electric Locomotives

open access: yesCommunications, 2019
This article is devoted to development of a method for calculating the parameters of an asynchronous motor of an electric locomotive with asymmetrical windings of stator and rotor.
Sergey Goolak   +5 more
doaj   +1 more source

Improved Formulae for the Inductance of Straight Wires

open access: yesAdvanced Electromagnetics, 2014
The best analytical formulae for the self-inductance of rectangular coils of circular cross section available in the literature were derived from formulae for the partial inductance of straight wires, which, in turn, are based on the well-known formula ...
H. A. Aebischer, B. Aebischer
doaj   +1 more source

One Hundred and Fifty Years of Skin Effect

open access: yesApplied Sciences, 2023
In 1873, J.C. Maxwell derived relations for current density and current in a solitary long cylindrical conductor supplied with variable current. According to Maxwell, the current density in a conductor increases towards the conductor surface.
Oldřich Coufal
doaj   +1 more source

Characterization of a planar microcoil for implantable microsystems [PDF]

open access: yes, 1997
This paper discusses the modelling, design and characterization of planar microcoils to be used in telemetry systems that supply energy to miniaturized implants. Parasitic electrical effects that may become important at a.c.
Elwenspoek, M.C.   +4 more
core   +3 more sources

Self inductance of a wire loop as a curve integral

open access: yesAdvanced Electromagnetics, 2016
It is shown that the self inductance of a wire loop can be written as a curve integral akin to the Neumann formula for the mutual inductance of two wire loops. The only difference is that contributions where the two integration variables get too close to
R. Dengler
doaj   +1 more source

On Simplified Calculations of Leakage Inductances of Power Transformers

open access: yesEnergies, 2020
This paper deals with the problem of the leakage inductance calculations in power transformers. Commonly, the leakage flux in the air zone is represented by short-circuit inductance, which determines the short-circuit voltage, which is a very important ...
Tadeusz Sobczyk, Marcin Jaraczewski
doaj   +1 more source

Fully superconducting rectifiers and fluxpumps Part 1: Realized methods for pumping flux [PDF]

open access: yes, 1981
The magnetic and electrical properties of superconductors were a challenge for many inventors and designers to use superconducting materials in the construction of fully superconducting voltage and current sources commonly called fluxpumps.
Kate, H.H.J. ten   +1 more
core   +2 more sources

Partial Stray Inductance Modeling and Measuring of Asymmetrical Parallel Branches on the Bus-Bar of Electric Vehicles

open access: yesEnergies, 2017
In order to increase the power rating of electric vehicles, insulated gate bipolar translator (IGBT) modules with multiple power terminals are usually adopted.
Chengfei Geng   +3 more
doaj   +1 more source

Nonlinear response of a thin metamaterial film containing Josephson junctions

open access: yes, 2009
An interaction of electromagnetic field with metamaterial thin film containing split-ring resonators with Josephson junctions is considered. It is shown that dynamical self-inductance in a split rings results in reduction of magnetic flux through a ring ...
Agranovich   +31 more
core   +1 more source

Nonlinear AC resistivity in s-wave and d-wave disordered granular superconductors

open access: yes, 2002
We model s-wave and d-wave disordered granular superconductors with a three-dimensional lattice of randomly distributed Josephson junctions with finite self-inductance. The nonlinear ac resistivity of these systems was calculated using Langevin dynamical
C. C. Tsuei   +33 more
core   +1 more source

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