Výsledky vyhledávání - "Elzbieta Lesniewska"

Akademický článek

Problems during the Design and Testing of Instrument, Special and Power Transformers: The Outlook

Autor: Elzbieta Lesniewska, Pawel Witczak

Publikováno v: Energies, Vol 17, Iss 2, p 363 (2024)

In 1831, Michael Faraday discovered the phenomenon of electromagnetic induction, which allowed for the construction of previously unknown electrical devices and significantly impacted economic and social development [...]

Externí odkaz: https://doaj.org/article/14e9389d36904be59e1509a69cd951a1

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Akademický článek

Selection of the Winding Type of Solid-State Transformers in Terms of Transmitting the Greatest Possible Power in the Frequency Range from 500 Hz to 6000 Hz

Autor: Elzbieta Lesniewska, Daniel Roger

Publikováno v: Energies, Vol 16, Iss 18, p 6528 (2023)

Solid-state transformer (SST) is an emerging technology that integrates with transformer power electronics converters and control. The most noticeable advantages of SST are the size and weight reduction compared with low-frequency transformers. Since

Externí odkaz: https://doaj.org/article/c726a11f302a463b83f44d773ce579b4

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Akademický článek

Modern Methods of Construction Problem Solving in Designing Various Types of Instrument Transformers

Autor: Elzbieta Lesniewska

Publikováno v: Energies, Vol 15, Iss 21, p 8199 (2022)

Current and voltage instrument transformers are essential elements of the power system. They work like transformers but do not transmit power. Their task is to accurately transform currents or voltages during system operation, which are then used for

Externí odkaz: https://doaj.org/article/3b48e0599dff46d8b3fe4fc7871ae0de

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Akademický článek

Analysis of the Operation of Cascade Current Transformers for Measurements of Short-Circuit Currents with a Non-Periodic Component with a Large Time Constant of Its Decay

Autor: Elzbieta Lesniewska, Jan Olak

Publikováno v: Energies, Vol 15, Iss 8, p 2925 (2022)

Simulations of emergency states and tests of resistance of electrical devices to emergencies are performed in specialized high-power laboratories, the so-called short-circuit laboratories. For most electrical power devices, such measurements are requ

Externí odkaz: https://doaj.org/article/42f0bcdebbdc484ab8ee235d96ddacf1

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Akademický článek

Influence of the Selection of the Core Shape and Winding Arrangement on the Accuracy of Current Transformers with Through-Going Primary Cable

Autor: Elzbieta Lesniewska

Publikováno v: Energies, Vol 14, Iss 7, p 1932 (2021)

The current transformers with split-core are used for installation in places where it is impossible to install classic current transformers. Moreover, this design allows for any measurement location change, and even switching one current transformer

Externí odkaz: https://doaj.org/article/c1f75557802544d59ee25f0063b84388

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Akademický článek

3D Electromagnetic Field Analysis Applied to Evaluate the Accuracy of a Voltage Transformer under Distorted Voltage

Autor: Elzbieta Lesniewska, Michal Kaczmarek, Ernest Stano

Publikováno v: Energies, Vol 14, Iss 1, p 136 (2020)

Voltage transformers (VTs) are an important element of the measuring system that allows measuring the energy flow in medium and high voltage networks. Additional problems with the accuracy of the measurement introduced by the appearance of sources an

Externí odkaz: https://doaj.org/article/523945c063b648c2b8b444d77d532b6c

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Akademický článek

Immunity of current-to-voltage transducer, with coils manufactured by means of multilayered PCB technology, to external magnetic fields

Autor: Elzbieta Lesniewska

Publikováno v: COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2015, Vol. 34, Issue 4, pp. 1156-1171.

Externí odkaz: http://www.emeraldinsight.com/doi/10.1108/COMPEL-07-2014-0180

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Behaviour of measuring current transformers with cores composed from different magnetic materials at non‐rated loads and overcurrents

Autor: Regina Rajchert, Elzbieta Lesniewska

Publikováno v: IET Science, Measurement & Technology. 13:944-948

This research is a continuation of researches into transformation errors of current transformers, when the cores consist of two different magnetic materials at non-rated loads and overcurrents. Analyses of the electromagnetic field distribution for d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4ad5910df01872926f3fc66b1eae94a
https://doi.org/10.1049/iet-smt.2018.5176

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3D Electromagnetic Field Analysis Applied to Evaluate the Accuracy of a Voltage Transformer under Distorted Voltage

Autor: Michal Kaczmarek, Elzbieta Lesniewska, Ernest Stano

Publikováno v: Energies; Volume 14; Issue 1; Pages: 136
Energies, Vol 14, Iss 136, p 136 (2021)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fb1ee50f71af4bb550cbb6afd45c49d
https://doi.org/10.3390/en14010136

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