Results 21 to 30 of about 34,963 (304)

Review of Measuring Methods, Setups and Conditions for Evaluation of the Inductive Instrument Transformers Accuracy for Transformation of Distorted Waveforms

open access: yesEnergies, 2023
In this review article, ideas for the development of measuring methods and setups to test inductive instrument transformer accuracy for the transformation of distorted current or voltage are analyzed. This article proposes limiting values for ratio error
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

The Reference Wideband Inductive Current Transformer

open access: yesEnergies, 2023
The aim of this paper is to show that the developed inductive current transformer may ensure the required wideband transformation accuracy and it may be applied, as the reference source, in the measuring system for the evaluation of the transformation ...
Michal Kaczmarek   +2 more
doaj   +1 more source

Analysis of voltage and current harmonics and the risk of resonance in a network with power capacitors [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2014
The purpose of the analysis of measurement results of harmonics presented in this paper is to predict the potential dangers after installation of capacitor banks in a medium-voltage (6 kV) network of the Kolubara open pit mine.
Kostić Miloje, Georgijević Nikola
doaj   +1 more source

Research, assessment and proposals on resolving power quality problem for the power supply system of Lam Dong alumina refinery, Vietnam

open access: yesГорные науки и технологии, 2021
Alumina production is rather complex technological process of processing mineral raw materials that requires development of effective technological solutions, including in terms of efficiency of using electric energy. The paper is devoted to studying the
Thanh Lich Do
doaj   +1 more source

Future work on harmonics : some expert opinions : part II : supraharmonics, standards and measurements [PDF]

open access: yes, 2014
A workshop on power system harmonics was organized in Stockholm in January 2014. On the agenda was among others a discussion on what are the main issues on harmonics at the moment and in the near future.
Desmet, Jan   +29 more
core   +1 more source

HARMONIC GRADIENTS ON HIGHER-DIMENSIONAL SIERPIŃSKI GASKETS [PDF]

open access: yesFractals, 2020
We consider criteria for the differentiability of functions with continuous Laplacian on the Sierpiński Gasket and its higher-dimensional variants [Formula: see text], [Formula: see text], proving results that generalize those of Teplyaev [Gradients on fractals, J. Funct. Anal. 174(1) (2000) 128–154].
LUKE BROWN   +4 more
openaire   +3 more sources

On the detectability of higher harmonics with LISA

open access: yesPhysical Review D, 2023
Supermassive black hole binaries (SMBHBs) are expected to be detected by the future space-based gravitational-wave detector LISA with a large signal-to-noise ratio (SNR). This prospect enhances the possibility of differentiating higher harmonics in the inspiral-merger-ringdown (IMR) waveform.
Pitte, Chantal   +4 more
openaire   +4 more sources

Fourier Transform (FT) Analysis of the Stress as a Tool to Follow the Fatigue Behavior of Metals

open access: yesApplied Sciences, 2021
This work investigates the possibility of applying Fourier Transform (FT) analysis of the force signal to follow fatigue behavior of metals under oscillatory displacement-controlled tests in uniaxial tension/tension.
Valerian Hirschberg, Denis Rodrigue
doaj   +1 more source

High-Frequency Behavior of Residual Current Devices [PDF]

open access: yes, 2012
The purpose of this paper is to analyze the behavior of residual current devices at frequencies higher than the rated one. Many experiments are carried out by measuring tripping current and time of devices of different typology, produced by different ...
Freschi, Fabio
core   +1 more source

Harmonic clipping contours: Numerical computation and extension to higher harmonics [PDF]

open access: yes2016 46th European Microwave Conference (EuMC), 2016
Abstract:\ud This paper presents the computation of harmonic clipping contours using a Matlab script that guarantees a fast calculation. Thanks to the numerical nature of the solution, an arbitrary number of harmonics can be taken into account with minimal added computational cost. The results for second harmonic clipping contours are compared with the
Quaglia, Roberto   +1 more
openaire   +2 more sources

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