Results 11 to 20 of about 562,453 (297)

The Reference Wideband Inductive Current Transformer

Energies, 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, Piotr Kaczmarek, Ernest Stano   +2 more
doaj   +1 more source

Evaluation of the Current Shunt Influence on the Determined Wideband Accuracy of Inductive Current Transformers

Energies, 2022
This manuscript presents performed laboratory studies and the analysis of the impact of current shunt values used in the differential connection on the wideband metrological performance of inductive current transformers.
Michal Kaczmarek, Piotr Kaczmarek, Ernest Stano   +2 more
doaj   +1 more source

The Effect of the Load Power Factor of the Inductive CT’s Secondary Winding on Its Distorted Current’s Harmonics Transformation Accuracy

Energies, 2022
In this paper, we present an investigation into the influence of the load power factor of secondary winding on the metrological performance of inductive CTs with frequencies from 50 Hz to 5 kHz of the harmonic of a transformed distorted current.
Michal Kaczmarek, Piotr Kaczmarek, Ernest Stano   +2 more
doaj   +1 more source

Why Should We Test the Wideband Transformation Accuracy of Inductive Current Transformers?

Energies, 2022
Inductive current transformers are characterized by different transformation accuracies for higher harmonics of distorted primary currents. Therefore, it is highly required to perform the tests of their metrological properties to choose the best unit ...
Ernest Stano, Piotr Kaczmarek, Michal Kaczmarek   +2 more
doaj   +1 more source

Understanding the Frequency Characteristics of Current Error and Phase Displacement of the Corrected Inductive Current Transformer

Energies, 2022
The paper presents investigations and analysis of the parameters of the magnetic part of the equivalent circuit of the inductive CT in the frequencies range from 50 Hz to 5 kHz.
Ernest Stano, Piotr Kaczmarek, Michal Kaczmarek   +2 more
doaj   +1 more source

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

Energies, 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   +1 more source

Helicity current generation by distorted Rashba coupling [PDF]

Physical Review B, 2021
We theoretically study spin transport in two-or three-dimensional Rashba systems dynamically distorted by surface acoustic waves. The spin currents in the linear response to lattice distortion dynamics are calculated on the basis of a microscopic theory combined with local coordinate transformations.
Takumi Funato, Mamoru Matsuo
openaire   +2 more sources

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

Energies, 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, Piotr Kaczmarek, Michal Kaczmarek   +2 more
doaj   +1 more source

The Influence of the 3rd Harmonic of the Distorted Primary Current on the Self-Generation of the Inductive Current Transformers

IEEE Access, 2022
This paper investigates for transformation of the distorted current the low order higher harmonic self-generation phenomenon of tested inductive current transformers.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source

Nonlinearity of Magnetic Core in Evaluation of Current and Phase Errors of Transformation of Higher Harmonics of Distorted Current by Inductive Current Transformers

IEEE Access, 2020
The novelty of the paper contributes to the increase of the reliability of the methods used for evaluation of the inductive CTs accuracy of transformation of the distorted current.
Michal Kaczmarek, Ernest Stano
doaj   +1 more source