Results 51 to 60 of about 4,033 (193)

Driving lamps by induction [PDF]

open access: yes, 1973
An electrodeless lamp circuit with a coil surrounding a krypton lamp is driven by an RF input source. A coil surrounding a mercury lamp is tapped across the connection of the input central to the krypton-lamp coil. Each coil is connected in parallel with
Clough, L. G., Laue, H. H.
core   +1 more source

Partial Discharge Pattern Recognition Based on Time‐Frequency Multi‐Scale Residual Attention Network

open access: yesIET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
A time‐frequency multi‐scale residual attention network (TFMRAnet) was designed to analyze partial discharge (PD) signals. The network comprises an adaptive denoising network based on multi‐scale residual attention, a frequency‐domain recognition network, and a decision fusion module based on Dempster‐Shafer (D‐S) evidence theory.
Yunguang Gao   +4 more
wiley   +1 more source

The Influence of 3‐D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC Risk

open access: yesSpace Weather, Volume 23, Issue 11, November 2025.
Abstract Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms. GICs in the electric power grid can cause damage to electric power transformers, system failures, and wide‐scale blackouts.
Hannah G. Parry   +4 more
wiley   +1 more source

INCREASING THE EFFICIENCY OF POWER AUTOTRANSFORMERS

open access: yesVestnik Chuvashskogo universiteta, 2023
The issues of implementing effective measures to reduce losses during the operation of power electrical equipment are of particular practical interest for electric grid and industrial enterprises. It is known that power transformers have a fairly high coefficient of performance (COP) in nominal (and close to them) modes.
Maksim G. Popov   +2 more
openaire   +1 more source

Reflective Efficiencies of Materials for Applications of Bifacial Solar Cells [PDF]

open access: yes, 2016
The bifacial solar cell is superior to its monofacial predecessor due to its ability to convert both incident light on top and reflected light from below into energy.
Metter, Michael
core   +2 more sources

Разработка модели автотрансформатора для исследования влияния квазипостоянных токов в нейтрали на режимные параметры сети переменного тока [PDF]

open access: yes, 2017
В роботі представлено розробку імітаційної моделі автотрансформатора АОДЦТН-333000/750/330. Змодельовано електричну та магнітну системи автотрансформатора.
Bilyk, Andrii Viktorovych   +8 more
core   +1 more source

Reduced scale feasibility of temperature rise tests in substation connectors [PDF]

open access: yes, 2016
Due to the important increase of the power of electrical transmission and distribution grids expected for the following years, especially in developing countries such as Kenya, Brazil, Philippines or Mexico among others, that have planes of generating ...
Abomailek Rubio, Basel Carlos   +2 more
core  

Use of Alternating Current Spinning to Prepare Carbon Nanofibers From Commercial PAN Fibers

open access: yesJournal of Applied Polymer Science, Volume 142, Issue 31, August 15, 2025.
ABSTRACT The aim of this study was to explore the potential of recycling commercial polyacrylonitrile fibers through electrospinning to produce carbon nanofibers (CNFs). We evaluated the feasibility of producing bulk nanofiber layers from recycled polymer and optimized the process to achieve an optimal solution concentration (10 wt%).
Radek Jirkovec   +3 more
wiley   +1 more source

A Deep Learning Approach for the Automated Classification of Geomagnetically Induced Current Scalograms

open access: yesApplied Sciences
During geomagnetic storms, which are a result of solar wind’s interaction with the Earth’s magnetosphere, geomagnetically induced currents (GICs) begin to flow in the long, high-voltage electrical networks on the Earth’s surface.
Tatyana Aksenovich, Vasiliy Selivanov
doaj   +1 more source

Analysis of the network current in circuits twenty-four pulse controlled rectifiers [PDF]

open access: yes, 2019
Основная часть электроэнергии потребляется в преобразованном виде и применение схем полупроводниковых преобразователей для получения заданных параметров нагрузки увеличивается.
Крылов, Денис Сергеевич   +1 more
core   +1 more source

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