Results 11 to 20 of about 733,401 (250)

Test and study on sensitivity of electronic circuit in low‐voltage release to voltage sags

open access: yesIET Circuits, Devices and Systems, 2017
This study focuses on sensitivity of electronic circuit in low‐voltage release to voltage sags based on a large‐scale test results. Although studies about ride‐through capability of some electronic devices during voltage sags have been carried out, there
Sen Ouyang, Liyuan Liu
doaj   +2 more sources

Implementation of a non-conventional method to characterize voltage sags and swells [PDF]

open access: yesDyna, 2016
Voltage sags and swells are among the power quality disturbances that represent the biggest economic losses for affected users. It is therefore necessary to undertake a suitable characterization of those events to conduct studies that permit the causes ...
Jorge Enrique Celis-Montero   +2 more
doaj   +2 more sources

Estimation of voltage sags patterns with k-means algorithm and clustering of fault zones in high and medium voltage grids

open access: yesIngeniería e Investigación, 2011
This paper proposes k-means clustering algorithm to identify voltage sags patterns and group fault zones with similar impact in high and medium voltage electric. The proposed methodology comprises three stages.
Miguel Romero   +2 more
doaj   +1 more source

Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags

open access: yesIranian Journal of Electrical and Electronic Engineering, 2014
This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM).
H. Fallah khoshkar   +2 more
doaj   +1 more source

A Three Phase Voltage Restorer Based on Bipolar Direct AC/AC Converters

open access: yesIEEE Access, 2023
A new topology is proposed to regulate voltage sags/swells in the distribution network in this paper. Voltage sags and swells are a serious power quality problem faced by the power industry.
Wang Yibo   +6 more
doaj   +1 more source

Analysis and Investigation on Causes of Voltage Sag Based on A Novel Apriori Algorithm [PDF]

open access: yesE3S Web of Conferences, 2020
As more and more power users are increasingly demanding the quality of electricity, the losses caused by voltage sags are becoming more and more serious.
Liu Hao   +5 more
doaj   +1 more source

Current Control Reference Calculation Issues for the Operation of Renewable Source Grid Interface VSCs Under Unbalanced Voltage Sags [PDF]

open access: yes, 2011
23/04/13 MEB.
Soto-Sanchez, DE   +7 more
core   +1 more source

Methodology for Determination of the Number of Equipment Malfunctions Due to Voltage Sags

open access: yesEnergies, 2017
This article deals with the assessment of the reliability of sensitive equipment due to voltage sags. The most frequent problems of power quality are voltage sags.
Alena Otcenasova   +4 more
doaj   +1 more source

New Stationary Frame Control Scheme for Three Phase PWM Rectifiers Under Unbalanced Voltage Dips Conditions [PDF]

open access: yes, 2010
A new stationary frame control scheme for three-phase pulsewidth-modulation (PWM) rectifiers operating under unbalanced voltage dips conditions is proposed in this paper.
BOJOI, IUSTIN RADU   +5 more
core   +1 more source

Evaluation of the impact of distributed synchronous generation on the stochastic estimation of financial costs of voltage sags

open access: yesJournal of Energy in Southern Africa, 2016
Power system faults can cause voltage sags that, if they are less than voltage sensitivity threshold of equipment, can lead to interruption of supply and lead to incurring of financial losses.
N Mbuli, R Xezile, JHC Pretorius, P Sowa
doaj   +1 more source

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