Results 41 to 50 of about 31,464 (325)

A new method for analyzing the impact of winding mechanical defects on the equivalent circuit parameters of power transformers

open access: yesIET Generation, Transmission & Distribution, 2023
Condition monitoring of the power transformer winding and diagnose of the fault in its incipient stages can prevent the spread of defect, and as a result, the unexpected exit of the transformer.
Hadi Tarimoradi, Milad Askari
doaj   +1 more source

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

open access: yes, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Ramírez, Jorge, Valecillos, Baudilio
core   +3 more sources

The Structure Analytical Research of Porous Permeable Wire Material

open access: yesManagement Systems in Production Engineering, 2016
The details of making technology of porous permeable material with use of wire are allowed to carry out the analytical research of structure and structural characteristics of wire winding body.
Jakubowski Andrzej, Crasto Renata
doaj   +1 more source

An Obstructive Wind Sock Web Deformity of the Proximal Duodenum [PDF]

open access: yesIndian Journal of Surgery, 2017
We herein present a case of a wind sock web deformity of the proximal duodenum causing episodic duodenal obstruction in a 43-year-old male patient.
Athanasios D, Sioulas   +2 more
openaire   +2 more sources

Kaluza-Klein Dyons in String Theory [PDF]

open access: yes, 1997
S-duality of hetertotic / type II string theory compactified on a six dimensional torus requires the existence of Kaluza-Klein dyons, carrying winding charge.
A. Sen   +16 more
core   +2 more sources

BCFT and OSFT moduli: an exact perturbative comparison [PDF]

open access: yes, 2017
Starting from the pseudo-${\cal B}_0$ gauge solution for marginal deformations in OSFT, we analytically compute the relation between the perturbative deformation parameter $\tilde\lambda$ in the solution and the BCFT marginal parameter $\lambda$, up to ...
Larocca, Pier Vittorio   +1 more
core   +2 more sources

O(d,d,Z) Transformations as Automorphisms of the Operator Algebra [PDF]

open access: yes, 1996
We implement the O(d,d,Z) transformations of T-duality as automorphisms of the operator algebras of Conformal Field Theories. This extends these transformations to arbitrary field configurations in the deformation class.Comment: 9 pages, Plain ...
Buscher   +19 more
core   +2 more sources

Dynamic optical deformation measurements on wind turbines

open access: yesJournal of Physics: Conference Series, 2022
Abstract Because of an increase in the size of wind turbines in recent years, efficient structural health monitoring of the turbine’s structure has become critical. Wind turbine towers deform elastically as a result of the loads due to wind and inertial forces acting on the revolving rotor blades. To adequately assess these deformations,
P Helming   +4 more
openaire   +1 more source

Air Core Transformer Winding Disk Deformation: A Precise Study on Mutual Inductance Variation and Its Influence on Frequency Response Spectrum

open access: yesIEEE Access, 2018
It is well-known that the deformation of transformer winding can produce detectable changes to the frequency response spectrum compared with a referenced past measurement.
Mehdi Bagheri   +3 more
doaj   +1 more source

Investigating inter-turn fault in transformer using TTR and FRA [PDF]

open access: yes, 2019
Transformers are one of the significant elements in the power system network. The Transformer function is to step up and down the voltages. When the transformer operating in high load, it exposes to failures.
Abdulrazzaq Al-Iedani, Ali Salman
core  

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