Results 21 to 30 of about 31,723,296 (295)

Improving Inverter Output Current Controller Under Unbalanced Conditions by Using Virtual Impedance

open access: yesIEEE Access, 2021
Nowadays, three-phase inverters have been commonly used in power systems, especially in renewable energy and motor drives applications. In many applications, the inverter has to generate balanced sinusoidal three-phase currents even though it is ...
Lukas Antonio Budiwicaksana   +4 more
doaj   +1 more source

Muscle: A Three Phase System [PDF]

open access: yesThe Journal of General Physiology, 1959
The partition of sulfate, Ca++, and Mg++ across the membrane of the sartorius muscle has been studied, and the effect of various concentrations of these ions in the Ringer solution on the cellular level of Na+, K+, and Cl- has been determined. The level of the three divalent ions in toad plasma and muscle in vivo has been assayed. Muscle
R, FRATER, S E, SIMON, F H, SHAW
openaire   +5 more sources

Three-Phase to Single-Phase Generation System Based on Doubly-Fed Induction Generator

open access: yesEletrônica de Potência, 2020
This paper presents a three-phase to singlephase six-leg converter for a wind energy conversion system based on Doubly-Fed Induction Generator (DFIG).
Filipe V. Rocha   +4 more
doaj   +1 more source

Real-Time Three-Phase Dynamic Full ACPF Distribution System Model

open access: yesYanbu Journal of Engineering and Science, 2022
Power flow is the backbone for power system operation and control. Power system balancing, where supply of energy has to equal demand all time, is a very important operation constraint for electric power systems.
Sultan Hakmi Jr.
doaj   +1 more source

The International Study of Asthma and Allergies in Childhood (ISAAC) Phase Three: A global synthesis [PDF]

open access: yes, 2013
This ISAAC Phase Three synthesis provides summarised information on the main findings of the study, regional tables and figures related to the prevalence and severity of current symptoms of asthma, rhinoconjunctivitis and eczema in the main regions of ...
Keil, U   +7 more
core   +1 more source

Power Management in Three-Phase Grid-Integrated PV System with Hybrid Energy Storage System

open access: yesEnergies, 2023
The management of energy in distribution networks has been gathering attention in recent years. The simultaneous control of generation and demand is crucial for achieving energy savings and can further lower energy pricing.
Chinmaya Jagdev Jena, Pravat Kumar Ray
doaj   +1 more source

Mathematical Modelling of Transient Processes in a Three Phase Electric Power System for a Single Phase Short-Circuit

open access: yesEnergies, 2022
Field approaches are employed to develop a mathematical model of a power network section. The facility consists of two electric power subsystems described with ordinary differential equations and presented as concentrated parameter systems connected with
Andriy Chaban   +3 more
doaj   +1 more source

Harmonic Identification by DQ Axis with Fourier Method for Active Power Filters [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2006
This paper proposes a new method of harmonic identification named DQ axis with Fourier (DQF) method. It lies on the basis of the DQ axis method enhanced by the sliding window Fourier analysis (SWFA).
Kulworawanichpong, T.   +2 more
doaj  

Adaptive nonlinear control of single-phase to three-phase UPS system

open access: yesMATEC Web of Conferences, 2014
This work deals with the problems of uninterruptible power supplies (UPS) based on the single-phase to three-phase converters built in two stages: an input bridge rectifier and an output three phase inverter.
Kissaoui M.   +4 more
doaj   +1 more source

District Heating System Optimisation: A Three-Phase Thermo-Hydraulic Linear Model

open access: yesEnergies, 2023
Investments in the development of the district heating system require a thorough analysis of the technical, economic, and legal aspects. Regarding the technical and economic context, a mathematical model of the district heating system has been proposed ...
Piotr Pałka   +4 more
doaj   +1 more source

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