Results 21 to 30 of about 73,713 (278)

Balancing reactive compensation at three-phase four-wire systems with a sinusoidal and asymmetrical voltage source [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
The article presents the essentials of reactance compensation of unbalanced loads in three-phase four-wire systems powered by a sinusoidal and asymmetrical voltage source.
Z. Sołjan, G. Hołdyński, M. Zajkowski
doaj   +1 more source

Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]

open access: yes, 2013
In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
A. S., Kumar, J.S., Sathiyanarayanan
core   +2 more sources

Error concealment for slice group based multiple description video coding [PDF]

open access: yes, 2005
This paper develops error concealment methods for multiple description video coding (MDC) in order to adapt to error prone packet networks. The three-loop slice group MDC approach of D. Wang et al. (2005) is used.
Agrafiotis, D   +3 more
core   +2 more sources

Compensation of Distribution System Voltage using DVR [PDF]

open access: yes, 2002
A dynamic voltage restorer (DVR) is a power-electronic controller that can protect sensitive loads from disturbances in the supply system. In this paper, it is demonstrated that this device can tightly regulate the voltage at the load terminal against ...
Ghosh, Arindam, Ledwich, Gerard
core   +2 more sources

Improvements in Bidirectional Power-Flow Balancing and Electric Power Quality of a Microgrid with Unbalanced Distributed Generators and Loads by Using Shunt Compensators

open access: yesEnergies, 2018
Improper connections of unbalanced distributed generators (DGs) and loads in a three-phase microgrid cause unbalanced and bidirectional power flow problems. The unbalanced DGs and loads may also aggravate the electric power quality (EPQ), such as voltage
Wei-Neng Chang   +2 more
doaj   +1 more source

Reactive Power Compensation and Imbalance Suppression by Star-Connected Buck-Type D-CAP

open access: yesEnergies, 2019
Reactive power and negative-sequence current generated by inductive unbalanced load will not only increase line loss, but also cause the malfunction of relay protection devices triggered by a negative-sequence component in the power grid, which threatens
Xiaosheng Wang   +5 more
doaj   +1 more source

The fundamental phase shift compensation scheme in a digital-controlled VIENNA rectifier with variable carrier-fundamental frequency ratio under unbalanced grid conditions

open access: yesEnergy Reports, 2022
In the DC power distribution systems, One-cycle control (OCC) based three-phase VIENNA rectifiers achieves high power factor (PF) easily. However, under unbalanced grid conditions, the fundamental phase shift between the input current and corresponding ...
Jianguo Lyu   +5 more
doaj   +1 more source

Control System for Self-Commutated Static Var Compensators with Unbalanced-Load Compensation.

open access: yesIEEJ Transactions on Industry Applications, 1994
In recent years, power demand has considerably increased, and there is the need to improve the quality of electric power, such as voltage change and three phase voltage unbalance. Static var compensators have been used for suppressing the disturbance of power distribution lines in mainly industrial fields and now the application is going to be expanded
Naoya Eguchi   +4 more
openaire   +2 more sources

Spanish Football [PDF]

open access: yes, 2006
The authors analyze the financial situation of the Spanish football industry. They first argue that a relevant analysis of the industry's financial results relies on a careful description of how historical and cultural factors have influenced its ...
Ascari, Guido, Gagnepain, Philippe
core   +3 more sources

Complex Master Slave Interferometry [PDF]

open access: yes, 2016
A general theoretical model is developed to improve the novel Spectral Domain Interferometry method denoted as Master/Slave (MS) Interferometry. In this model, two functions, g and h are introduced to describe the modulation chirp of the channeled ...
Bradu, Adrian   +5 more
core   +1 more source

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