Results 31 to 40 of about 541,291 (327)

Model predictive control optimization method for distribution network containing distributed photovoltaics

open access: yes电力工程技术, 2023
The high permeability and uncertainty of distributed photovoltaics have a great impact on the node voltage and power flow distribution and pose a new challenge to the safe operation of distribution network.
CHEN Yuxing   +5 more
doaj   +1 more source

NUMERICAL ANALYSIS OF MATHEMATICAL MODELS OF THE FACTUAL CONTRIBUTION DISTRIBUTION IN ASYMMETRY AND DEVIATION OF VOLTAGE AT THE COMMON COUPLING POINTS OF ENERGY SUPPLY SYSTEMS

open access: yesElectrical engineering & Electromechanics, 2016
Purpose. Perform numerical analysis of the distribution of the factual contributions of line sources of distortion in the voltage distortion at the point of common coupling, based on the principles of superposition and exclusions. Methodology.
Yu.L. Sayenko, D.N. Kalyuzhniy
doaj   +1 more source

Optimal Placement of Distributed Generation Based on Power Quality Improvement Using Self-Adaptive Lévy Flight Jaya Algorithm

open access: yesClean Technologies, 2022
The optimal placement of distributed generation (DG) is a critical task for distribution companies in order to keep the distribution network running smoothly. The optimal placement of DG units is an optimization problem.
Gubbala Venkata Naga Lakshmi   +3 more
doaj   +1 more source

Voltage Deviations in a Power System

open access: yes, 2021
The aim of this project was to analyze howthe voltage magnitudes of an electrical grid is affectedwhen wind power production varies in an area aroundthe river of Ångermanälven. The goal of the project wasto keep the voltage deviation within 10 % from the setbase value.
Lindgren, Klas   +1 more
openaire   +1 more source

Adaptive multi-objective reactive power optimization control strategy for offshore wind farms

open access: yes电力工程技术
Aiming at the problem that traditional fixed-weight multi-objective reactive power optimization is unable to make the most suitable control decisions for real-time working conditions when dealing with the complex and changing working conditions of new ...
YANG Duotong   +5 more
doaj   +1 more source

Modeling the Effect of Cell Variation on the Performance of a Lithium-Ion Battery Module

open access: yesEnergies, 2022
Owing to the variation between lithium-ion battery (LIB) cells, early discharge termination and overdischarge can occur when cells are coupled in series or parallel, thereby triggering a decrease in LIB module performance and safety.
Dongcheul Lee   +2 more
doaj   +1 more source

Weak Field Hall Resistance and Effective Carrier Density Through Metal-Insulator Transition in Si-MOS Structures

open access: yes, 1999
We studied the weak field Hall voltage in 2D electron layers in Si-MOS structures with different mobilities, through the metal-insulator transition.
A. B. Fowler   +16 more
core   +1 more source

Ex-situ Tunnel Junction Process Technique Characterized by Coulomb Blockade Thermometry [PDF]

open access: yes, 2010
We investigate a wafer scale tunnel junction fabrication method, where a plasma etched via through a dielectric layer covering bottom Al electrode defines the tunnel junction area. The ex-situ tunnel barrier is formed by oxidation of the bottom electrode
Enouz-Vedrenne, S.   +5 more
core   +2 more sources

Magnetically coupled emission regulator [PDF]

open access: yes, 1969
Magnetic coupling between input and power handling circuits isolates high voltage. A feedback regulator samples the ion source bias current and provides deviation signals to a magnetic amplifier pulse modulator.

core   +1 more source

Development of Thick-foil and Fine-pitch GEMs with a Laser Etching Technique

open access: yes, 2009
We have produced thick-foil and fine-pitch gas electron multipliers (GEMs) using a laser etching technique. To improve production yield we have employed a new material, Liquid Crystal Polymer, instead of polyimide as an insulator layer.
A. Harayama   +29 more
core   +1 more source

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