Results 21 to 30 of about 357,530 (342)

Asynchronous performance analysis of a single-phase capacitor-start, capacitor-run permanent magnet motor [PDF]

open access: yes, 2005
This work presents a detailed analysis of the asynchronous torque components (average cage, magnet braking torque and pulsating) for a single-phase capacitor-start, capacitor-run permanent magnet motor.
McGilp, M.   +5 more
core   +1 more source

An Approach for Assigning Responsibilities of Short-Term Voltage Variations in Electrical Power Systems

open access: yesIEEE Access, 2023
Short-term voltage variations (STVVs) are phenomena manifested as voltage sags, voltage swells, or interruptions lasting up to 1 minute. Despite their short duration, they greatly influence the operations of loads.
Adrian Ribeiro Ferreira   +3 more
doaj   +1 more source

Effect of winding harmonics on the asynchronous torque of a single-phase line start permanant-magnet motor [PDF]

open access: yes, 2005
This paper presents an analytical method for calculating the effect of winding harmonics on the asynchronous torque of a single-phase line-start permanent-magnet motor.
daSilva, C.   +5 more
core   +1 more source

Identification of interturn faults in power transformers by means of generalized symmetrical components analysis [PDF]

open access: yesE3S Web of Conferences, 2019
The paper deals with experimental identification of transformer internal faults, an important factor in reliability and sustainability of power supply systems. Task of identification of transformer internal faults requires increasing sensitivity of relay
Ivanchenko Daniil, Smirnov Artem
doaj   +1 more source

Fault-Locator Scheme for Combined Taba-Aqaba Transmission System Based on New Faulted Segment Identification Method

open access: yesIEEE Access, 2023
In this paper, a new fault locator scheme is introduced to address the non-homogeneity of combined transmission lines (Taba-Aqaba Intertie transmission system).
Mahmoud A. Elsadd   +3 more
doaj   +1 more source

Short-Circuit Calculation in Distribution Networks with Distributed Induction Generators

open access: yesEnergies, 2016
This paper presents an improved current source equivalent model method to determine the short-circuit current of a distribution system with multiple fixed-speed and variable-speed induction generators (IGs).
Niancheng Zhou   +4 more
doaj   +1 more source

СURRENT FILTERING IN A THREE-PHASE THREE-WIRE POWER SYSTEM AT ASYMMETRIC SINUSOIDAL VOLTAGES

open access: yesElectrical engineering & Electromechanics, 2018
Purpose. Investigation of the optimal current distribution between source, shunt active filter and reactive compensator of a three-phase three-wire system that provides consumption of a sinusoidal symmetric current under asymmetric source voltages with ...
M. Yu. Artemenko   +2 more
doaj   +1 more source

Identifying the task characteristics that predict children's construction task performance [PDF]

open access: yes, 2010
Construction tasks form a major part of children’s play and can be linked to achievement in maths and science. However there is a lack of understanding of construction task ability and development.
Aiken   +42 more
core   +3 more sources

Analysis of the Possibilities of Selective Detection of a Single Line-to-Ground Fault in a Medium Voltage Network with Isolated Neutral

open access: yesEnergies, 2021
The paper analyses how the characteristics of the medium-voltage network with insulated neutral and the conditions under which the single line-to-ground fault occurs (insulation condition and value of the fault resistance) influence the zero-sequence ...
Dumitru Toader   +4 more
doaj   +1 more source

Quantum integrable system with two color components in two dimensions

open access: yes, 2001
The Davey-Stewartson 1(DS1) system[9] is an integrable model in two dimensions. A quantum DS1 system with 2 colour-components in two dimensions has been formulated.
A. Davey   +19 more
core   +1 more source

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