Results 1 to 10 of about 333,618 (298)

Analytical Investigation of Primary Waveform Distortion Effect on Magnetic Flux Density in the Magnetic Core of Inductive Current Transformer and Its Transformation Accuracy [PDF]

open access: yesSensors
This paper analyzes how distortion in the primary current waveform affects the magnetic flux density in the magnetic core of an inductive current transformer and its transformation accuracy.
Michal Kaczmarek, Kacper Blus
doaj   +4 more sources

Transformation of a PID Controller for Numerical Accuracy [PDF]

open access: yesElectronic Notes in Theoretical Computer Science, 2015
AbstractNumerical programs performing floating-point computations are very sensitive to the way formulas are written. Several techniques have been proposed concerning the transformation of expressions in order to improve their accuracy and now we aim at going a step further by automatically transforming larger pieces of code containing several ...
Alexandre Chapoutot
exaly   +5 more sources

Improving the numerical accuracy of programs by automatic transformation [PDF]

open access: yesInternational Journal on Software Tools for Technology Transfer, 2016
The dangers of programs performing floating-point computations are well known. This is due to the sensitivity of the results to the way formulae are written. These last years, several techniques have been proposed concerning the transformation of arithmetic expressions in order to improve their numerical accuracy and, in this article, we go one step ...
Matthieu Martel   +2 more
exaly   +5 more sources

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   +3 more sources

New Approach to Evaluate the Transformation Accuracy of Inductive CTs for Distorted Current

open access: yesEnergies, 2023
This paper presents a newly developed method to determine the values of current error and phase displacement for the transformation of distorted current harmonics by the inductive current transformers.
Michal Kaczmarek, Ernest Stano
doaj   +3 more sources

Sensitivity analysis and accuracy assessment of the land transformation model using cellular automata

open access: yesGIScience & Remote Sensing, 2017
This study evaluates the effects of cellular automata (CA) with different neighborhood sizes on the predictive performance of the Land Transformation Model (LTM).
Hossein Shafizadeh-Moghadam   +4 more
doaj   +2 more sources

Monitoring of spatial data coordinate basis integrity using coordinate transformations [PDF]

open access: yesE3S Web of Conferences, 2021
The modern spatial data coordinate basis (SDCB) is built taking into account the variety of existing and used today geodetic networks, models of physical fields of the Earth, cartographic models, as well as coordinate systems (СS).
Nepoklonov Vicktor   +2 more
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

Evaluation of the Optional Wideband Accuracy of Inductive Current Transformers in Accordance with the Standard IEC 61869-1 Ed.2

open access: yesEnergies, 2023
This paper presents the evaluation of tested inductive CTs’ accuracy for distorted current harmonics in accordance with the optional accuracy class WB1 introduced by the new edition of the standard IEC 61869-1 published in the year 2023.
Ernest Stano   +2 more
doaj   +1 more source

Challenges of Accurate Measurement of Distorted Current and Voltage in the Power Grid by Conventional Instrument Transformers

open access: yesEnergies, 2023
Power grids are a combined system where the electrical energy produced by the power plants is transmitted to consumers. This forms a specific interdependence where the recipients have a significant impact on the power quality.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

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