Results 71 to 80 of about 140 (122)

High-Freqeuncy Analysis of Three-Winding Autotransformers 400/121/34 kV

open access: yesAdvances in Electrical and Electronic Engineering, 2008
This article deals with a description of methods of an experimental analysis concerning the actual condition of windings and magnetic circuit of the autotransformer, which is required in power transmission companies all over the world.
Miroslav Gutten   +3 more
doaj  

A State-of-the-Art Review on CMOS Radio Frequency Power Amplifiers for Wireless Communication Systems. [PDF]

open access: yesMicromachines (Basel), 2023
Hamid SS   +7 more
europepmc   +1 more source

Modeling and allocation of modern infrastructure deployment in LV European-type distribution systems for solving power quality issues

open access: yesInternational Journal of Electrical Power & Energy Systems
Voltage magnitude limit violations (under/over-voltage), phase unbalance and occasional conductor overloads are among the most frequent and operationally critical problems in European low-voltage (LV) distribution networks, and their incidence is rising ...
Tarikua Taye   +5 more
doaj   +1 more source

Transformerless partial power converter topology for electric vehicle fast charge

open access: yesIET Power Electronics
Increasing the power rating of electric vehicles (EV) fast charging stations to reduce charging times is considered critical to accelerate the adoption of electric vehicles.
Daniel Pesantez   +5 more
doaj   +1 more source

Novel clamping modulation for three‐phase buck‐boost ac choppers

open access: yesElectronics Letters
Three‐phase ac choppers feature output voltage amplitude controllability and enable more compact system realizations compared to autotransformers. For the practical realization advantageously standard power transistor with unipolar voltage blocking ...
David Menzi   +3 more
doaj   +1 more source

Fault Identification Method for Flexible Traction Power Supply System by Empirical Wavelet Transform and 1-Sequence Faulty Energy

open access: yesWorld Electric Vehicle Journal
The 2 × 25 kV flexible traction power supply system (FTPSS), using a three-phase-single-phase converter as its power source, effectively addresses the challenges of neutral section transitions and power quality issues inherent in traditional power supply
Jiang Lu   +5 more
doaj   +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

Evaluation of the efficiency of a low voltage autotransformer

open access: yesMeasurement: Energy
In many developing countries, low-voltage autotransformers are commonly used in residential settings to compensate for persistent voltage irregularities in the electrical distribution network. Despite their widespread use, few studies have systematically
Edwin Garabitos-Lara   +2 more
doaj   +1 more source

UNIVERSAL THEORY OF AUToTRANSFORMER [PDF]

open access: yesSt. Petersburg State Polytechnical University Journal, 2015
openaire   +1 more source

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