Results 1 to 10 of about 385,575 (190)

A Simplified Model of a Surge Arrester and Its Application in Residual Voltage Tests

open access: yesEnergies, 2021
A simplified and accurate model of a surge arrester used in the residual voltage test is proposed in this paper. With the help of a genetic algorithm, the measured impulse current and residual voltage waveforms are utilized to determine circuit ...
Peerawut Yutthagowith   +2 more
doaj   +1 more source

Open-Circuit Fault Diagnosis for Permanent Magnet Synchronous Motor Drives Based on Voltage Residual Analysis

open access: yesEnergies, 2023
With the widespread application of permanent magnet synchronous motor (PMSM) drives, the demand for safety and reliability has increased. Inverter open-circuit fault is a frequent and severe failure that requires reliable detection and remedial measures.
Bo Wang, Xiaobao Feng, Rongxin Wang
doaj   +1 more source

Transient Response Characteristics of Metal Oxide Arrester under High-Altitude Electromagnetic Pulse

open access: yesEnergies, 2022
In order to study the strong electromagnetic pulse effect of critically vulnerable equipment in power systems and evaluate the survivability under high-altitude electromagnetic pulses, it is necessary to study the characteristics of the transient ...
Feng Qin   +5 more
doaj   +1 more source

Quality Assessment of Low Voltage Surge Arresters

open access: yesIEEE Access, 2022
Users expect reliable operation of the surge arrester during overvoltages, which may originate from a switching process or a lightning discharge. The necessary conditions to guarantee these expectations are: appropriate construction of the surge arrester,
Leszek S. Litzbarski   +6 more
doaj   +1 more source

Voltage Dependence and Non-Sensor Residues [PDF]

open access: yesBiophysical Journal, 2017
The gating charges in S4 segment are highly conserved in voltage-gated K+ channels. However, a broad range of voltage dependence for charge movement and K+ conductance activation are found, suggesting these features are determined by other motifs. The extracellular S3-S4 linker shows family-related conservation. We studied the influence of residues 353-
Joao L. Carvalho-de-Souza   +1 more
openaire   +1 more source

Research on Inter-Turn Short-Circuit Fault Diagnosis Method Based on High Frequency Voltage Residual for PMSM

open access: yesCES Transactions on Electrical Machines and Systems, 2023
Inter-turn fault is a serious stator winding short-circuit fault of permanent magnet synchronous machine (PMSM). Once it occurs, it produces a huge short-circuit current that poses a great risk to the safe operation of PMSM.
Xiaobao Feng   +4 more
doaj   +1 more source

A Model-Based Sensor Fault Diagnosis Scheme for Batteries in Electric Vehicles

open access: yesEnergies, 2021
The implementation of each function of a battery management system (BMS) depends on sensor data. Efficient sensor fault diagnosis is essential to the durability and safety of battery systems. In this paper, a model-based sensor fault diagnosis scheme and
Quanqing Yu   +4 more
doaj   +1 more source

ADJUSTMENT OF THE MATLAB SURGE ARRESTER MODEL PARAMETERS

open access: yesТехнічна електродинаміка, 2020
This article proposes a method for the parameters adjustment of the Matlab Simscape library Surge Arrester block. It is based on building of nonlinear V-I characteristic by approximation of residual voltage and impulse current obtained from manufacturer ...
О.Г. Шполянський
doaj   +1 more source

Computational identification of residues that modulate voltage sensitivity of voltage-gated potassium channels [PDF]

open access: yesBMC Structural Biology, 2005
Abstract Background Studies of the structure-function relationship in proteins for which no 3D structure is available are often based on inspection of multiple sequence alignments. Many functionally important residues of proteins can be identified because they are conserved during evolution.
Gallin, W.J., Li, B.
openaire   +3 more sources

Влияние форсировки возбуждения синхронных машин на уровень остаточного напряжения при кратковременных нарушениях электроснабжения

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
The article considers the influence of opportunities forcing synchronous generator (SG) and a synchronous motor (SM) to provide the required level of the residual voltage at the consumer at short circuits in networks of high voltage.

doaj   +1 more source

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