Results 21 to 30 of about 1,462,796 (292)

A hybrid multilevel converter for medium and high voltage applications [PDF]

open access: yes, 2010
This paper investigates the suitability of the hybrid multilevel converter for medium and high voltage application. The converter operation, modulation, and capacitor voltage balancing method are described in detail.
Ahmed, Khaled   +4 more
core   +3 more sources

CREATION OF A BIG POWER HYBRID ELECTRIC ENERGY STORAGE FOR PREVENTION SHORT-TERM INTERRUPTION OF POWER SUPPLY TO INDUSTRIAL CONSUMERS

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2018
The article gives a comparative analysis of different types of electricity accumulators. A possibility of using a hybrid electrical energy storage based on accumulator batteries and supercapacitors of high power is substantiated as one of the ways to ...
K. R. Bakhteev
doaj   +1 more source

Residual Stresses in Modelling Fatigue Lifetime of Gas Nitrided Iron-Based Alloys [PDF]

open access: yes, 2016
The objective of this work is to propose a model abled to optimize the mechanical properties from gaseous nitriding of steels (hardness, residual stresses) for a given loading and fatigue lifetime.
BECK, Guillaume   +9 more
core   +1 more source

Role of hydrophobic residues in the voltage sensors of the voltage-gated sodium channel

open access: yesBiochimica et Biophysica Acta (BBA) - Biomembranes, 2007
The role of hydrophobic residues in voltage sensors S4 of voltage-sensitive ion channels is less documented than that of charged residues. We performed alanine-substitution of branched-sidechain residues contiguous to the third, fourth and fifth positively charged residues in S4s of the first three domains of the sodium channel expressed in HEK cells ...
Bendahhou, Saïd   +2 more
openaire   +2 more sources

Multi-source residual capacity collaborative dynamic compensation strategy based on robust residual generator

open access: yesEnergy Reports, 2021
In this paper, a dynamic compensation strategy based on a residual generator was proposed to solve the problem of the power quality of the bus in an isolated AC microgrid.
Tiecheng Li, Can Su, Yue Zhang
doaj   +1 more source

Transient voltage stability assessment of renewable energy grid based on residual SDE-Net

open access: yesEnergy Reports, 2022
For the purpose of assessing the transient voltage stability of renewable energy grid more effectively and to measure the epistemic uncertainty of the evaluation results, a power system transient voltage stability assessment method based on residual ...
Yucheng Chen   +5 more
doaj   +1 more source

A System Assessment Method for Voltage Sag Severity Based on Average Point-To-Line Distance Index

open access: yesZhongguo dianli, 2020
In order to systematically compare the voltage sag severity of different regions, a system method is proposed to assess grid voltage sag severity. The method obtains the time duration intervals through cluster analysis, and gets the medians of residual ...
Qing ZHONG   +4 more
doaj   +1 more source

Design and analysis of low-voltage residual current operated protective device

open access: yesGong-kuang zidonghua, 2014
In view of problem that current residual current operated protective device could easily lead to serious interphase short circuit fault after single-phase leakage, the paper analyzed operating characteristics of a novel residual current operated ...
ZHANG Xiuhua
doaj   +1 more source

Voltage calculation on low voltage feeders with distributed generation [PDF]

open access: yes, 2014
Includes bibliographical references.The increasing levels of greenhouse gas emission and the continued depletion of fossil fuels have been the driving factors for power utilities to utilize renewable energy sources for power generation.
Namanya, Emmanuel
core   +1 more source

Scheme of Dynamic Equivalence for Regional Power Grid Considering Multiple Feature Constraints: A Case Study of Back-to-Back VSC-HVDC-Connected Regional Power Grid in Eastern Guangdong

open access: yesEnergies
As the global energy system accelerates its transition towards high penetration of renewable energy and high penetration of power electronic devices, regional power grids have undergone profound changes in their structural forms and component composition
Yuxuan Zou   +5 more
doaj   +1 more source

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