Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Michal Kaczmarek"'
Autor:
Michal Kaczmarek, Slawomir Wiak
Publikováno v:
Energies, Vol 17, Iss 22, p 5738 (2024)
Current transducers/transformers have a significant impact on the overall accuracy of the measuring system used for electrical power metering and current measurement, especially in non-sinusoidal conditions. This research concerns an evaluation of th
Externí odkaz:
https://doaj.org/article/863e9c5281024c94b3bf9cdda6dfbba0
Publikováno v:
Energies, Vol 16, Iss 21, p 7307 (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 transformatio
Externí odkaz:
https://doaj.org/article/7b60b79c69474573b2b7d1bc4e7cecda
Publikováno v:
Energies, Vol 16, Iss 20, p 7206 (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. The tests
Externí odkaz:
https://doaj.org/article/04739b0e34de47a7b153bb94f12e6d2b
Autor:
Michal Kaczmarek, Ernest Stano
Publikováno v:
IEEE Access, Vol 10, Pp 55876-55887 (2022)
This paper investigates for transformation of the distorted current the low order higher harmonic self-generation phenomenon of tested inductive current transformers. The influence of the main component and the 3rd harmonic of the distorted primary c
Externí odkaz:
https://doaj.org/article/5b4dea77732140e7b33b997ddf976131
Autor:
Michal Kaczmarek, Ernest Stano
Publikováno v:
Energies, Vol 16, Iss 11, p 4360 (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 e
Externí odkaz:
https://doaj.org/article/0b14ce111677400a8208d7ee3a894b32
Autor:
Michal Kaczmarek, Ernest Stano
Publikováno v:
IEEE Access, Vol 8, Pp 118885-118898 (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. The results of performed analyses shows that the values of current an
Externí odkaz:
https://doaj.org/article/cbcfd23ed17a490ebac22862c20b19d7
Autor:
Michal Kaczmarek, Ernest Stano
Publikováno v:
Energies, Vol 16, Iss 7, p 3026 (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. This approach eliminates the necessity for the u
Externí odkaz:
https://doaj.org/article/a2ec90de7fb14b56a3c52ef583b651b2
Autor:
Michal Kaczmarek, Ernest Stano
Publikováno v:
Energies, Vol 16, Iss 6, p 2648 (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. Therefore, the nonlinea
Externí odkaz:
https://doaj.org/article/5f7ea91cff894b058a3ce7a90981bd32
Publikováno v:
Energies, Vol 15, Iss 18, p 6840 (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. Moreover, a comparison of the
Externí odkaz:
https://doaj.org/article/b85fd34cdc3b43bb8ceef2940c40df1a
Publikováno v:
Energies, Vol 15, Iss 19, p 7208 (2022)
This paper presents the performance of the 26 kVA inductive high-current transformer (HCT) during operation in the frequencies range of transformed harmonics from 50 Hz to 5 kHz. Performed research concerns the determination of the possibility of obt
Externí odkaz:
https://doaj.org/article/1d7539f15be9475cb511021f7ae06949