Results 21 to 30 of about 8,309,634 (293)

Reducing the Excess Variability of the Hodrick-Prescott Filter by Flexible Penalization [PDF]

open access: yes, 2014
The Hodrick-Prescott filter is the probably most popular tool for trend estimation in economics. Compared to other frequently used methods like the Baxter-King filter it allows to estimate the trend for the most recent periods of a time series.
Bloechl, Andreas
core   +1 more source

Compensation Characteristics of Shunt Active and Series Active Power Filters.

open access: yesIEEJ Transactions on Industry Applications, 1993
AbstractActive power filters have been used in practice to suppress the harmonic interference in power systems. To compensate for harmonic currents of loads, active power filters usually are connected to power systems in parallel with the loads.
Peng, F.Z.   +2 more
openaire   +1 more source

The Design of Hybrid Active Power Filter based on Harmonics Detection and Its Simulation Research

open access: yesChemical Engineering Transactions, 2016
This paper puts forward a design method of hybrid active power filter which is based on harmonics detection and identifying. Firstly the paper analyzes damage and causes of the harmonics, then several solutions to harmonics problems are devoted to ...
Z.Y. Ma
doaj   +1 more source

A new configuration for shunt active power filters [PDF]

open access: yes, 1998
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis presents a new power circuit configuration to be used in shunt active power filters. A new control algorithm based on the linear voltage control
El-Habrouk, Mohamed
core   +7 more sources

DISTRIBUTION OF THE POWER OF THE A POWER ACTIVE FILTER BOOSTER TRANSFORMER FOR REGULATING OF THE NONLINEAR VOLTAGE DISTORTIONS COEFITIENT

open access: yesElektrotehnìka ta Elektroenergetika, 2018
Purpose. Investigate the parameters of the mode and distribution of the power of the transformer of the booster when adjusting the coefficient of the nonlinear distortion of the voltage. Methodology.
S.S. Bondarenko, О.V. Bialobrzheskyi
doaj   +1 more source

Active Power Filter With Automatic Control Circuit For Neutral Current Harmonic Minimization Technique [QC446.3.H37 I98 2007 f rb]. [PDF]

open access: yes, 2007
Disertasi ini bertujuan untuk membangun penuras kuasa aktif yang cekap dan boleh dipercayai bagi meminimumkan lebihan harmonik arus neutral dan juga masalah harmonik di dalam talian neutral untuk sistem tiga fasa empat dawai. The aim of this thesis
A Bakar, Mohd Izhar
core   +1 more source

A Grid Connected Photovoltaic Generation System With Compensation Of Current Harmonics And Voltage Sags

open access: yesEletrônica de Potência, 2006
This paper presents a system that provides photovoltaic generation as well as the ability to compensate current harmonics and voltage sags. The system can be controlled for current harmonics and reactive power compensation simultaneously by using a ...
Marcelo Cabral Cavalcanti   +5 more
doaj   +1 more source

Control schemes and compensation characteristics of an active filter connected in series with a passive filter.

open access: yesIEEJ Transactions on Industry Applications, 1990
Conventional passive filters have been broadly used to suppress the harmonics in power systems. However, they have the following disadvantages; (1) Source impedance affects the compensation characteristics. (2) Antiresonance between the source and the passive filter amplifies the harmonic current of the source at the specific frequency. (3) No harmonic
Fujita, Hideaki   +2 more
openaire   +2 more sources

Advanced nonlinear control of three phase series active power filter

open access: yesMATEC Web of Conferences, 2014
The problem of controlling three-phase series active power filter (TPSAPF) is addressed in this paper in presence of the perturbations in the voltages of the electrical supply network.
Abouelmahjoub Y.   +4 more
doaj   +1 more source

Neural Networks Applied to the Control of a Four-Wire Shunt Active Power Filter

open access: yesEletrônica de Potência, 2005
This paper presents a four-wire shunt active power filter fully controlled with neural networks. The paper is centered on a current compensation method based on adaptive linear elements (adalines), which are powerful and easy-to-use neural networks.
Marcelo G. Villalva   +1 more
doaj   +1 more source

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