Wyniki wyszukiwania dla: MULTIPULSE VOLTAGE CONVERTERS, MATRIX CONVERTERS COUPLED INDUCTORS, INDUCTIVE CURRENT SPLITTE/MERGERR

• Performance improvement method for the voltage-fed qZSI with continuous input current

  Publikacja

  • D. Vinnikov
  • I. Roasto
  • R. Strzelecki
  • M. Adamowicz

  - Rok 2010

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• Current-Voltage Characteristics of the Composites Based on Epoxy Resin and Carbon Nanotubes

  Publikacja

  • I. Pełech
  • A. Kaczmarek
  • R. S. Pełech

  - Journal of Nanomaterials - Rok 2015

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• Effect of contactless hybrid current limiter on voltage dips in power system

  Publikacja

  • P. Leśniewski
  • B. Semenowicz
  • R. Partyka

  - Rok 2003

  W referacie przedstawiono działanie hybrydowego niskonapięciowego ogranicznika prądu zwarciowego, składającego się z ultraszybkiego bezpiecznika, tranzystora mocy i warystora. W szczególności omówiono możliwości polepszenia jakości dostarczanej do odbiorców energii elektrycznej. Zastosowanie hybrydowego ogranicznika prądu znacznie ogranicza czasy trwania zapadów napięcia w systemie elektroenergetycznym. Obliczenia wykonano przy...

• Dynamic current-voltage characteristics of dielectrics with extremely low heat conductivity

  Publikacja

  • W. Tomaszewicz
  • P. J. Grygiel
  • H. Sodolski

  - Visnyk Lviv Univ. s.Physics - Rok 2003

  Zaprezentowano teoretyczny opis metody dynamicznych charakterystyk prądowo-napięciowych w przypadku znacznego gradientu temperatury w ciałach stałych o przewodności jonowej. Otrzymano rozwiązania równania transportu oraz równania charakterystyk, odnoszące się do ruchu cienkiej warstwy nośników ostałej grubości oraz warstwy rozszerzającej się. Podano także przybliżone wyrażenia opisujące czas przelotu nośników. Wyniki zweryfikowano...

• Effect of contactless hybrid current limiter on voltage dips in power system.

  Publikacja

  • P. Leśniewski
  • B. Semenowicz
  • R. Partyka

  - Rok 2003

  W referacie przedstawiono działanie hybrydowego niskonapięciowego ogranicznika prądu zwarciowego, składającego się z ultraszybkiego bezpiecznika, tranzystora mocy i warystora. W szczególności omówiono możliwości polepszenia jakości dostarczanej do odbiorców energii elektrycznej. Zastosowanie hybrydowego ogranicznika prądu znacznie ogranicza czasy trwania zapadów napięcia w systemie elektroenergetycznym. Obliczenia wykonano przy...

• A versatile analog CMOS cell: voltage - buffer /current - conveyor/ multiplier

  Publikacja

  • W. Jendernalik
  • J. Grzyb
  • S. Szczepański

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2002

  W pracy przedstawiono koncepcję uniwersalnej komórki analogowej przeznaczonej dla programowalnych układów analogowych (FPAA). Komórka może pełnić funkcję bufora napięciowego, konwjora prądowego lub mnożnika analogowego. Układ przesymulowano w technologii CMOS 2 ćm.

• Voltage Dependence of Supercapacitor Capacitance

  Publikacja

  • A. Szewczyk
  • J. Sikula
  • V. Sedlakova
  • J. Majzner
  • P. Sedlak
  • T. Kuparowitz

  - Metrology and Measurement Systems - Rok 2016

  Electronic Double-Layer Capacitors (EDLC), called Supercapacitors (SC), are electronic devices that are capable to store a relatively high amount of energy in a small volume comparing to other types of capacitors. They are composed of an activated carbon layer and electrolyte solution. The charge is stored on electrodes, forming the Helmholtz layer, and in electrolyte. The capacitance of supercapacitor is voltage- dependent. We...

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• Jarosław Guziński prof. dr hab. inż.

  Osoby

  Wydział Elektrotechniki i Automatyki, Katedra Automatyki Napędu Elektrycznego i Konwersji Energii

  STOPNIE NAUKOWE 2021 Tytuł profesora nauk inżynieryjno-technicznych. 2012  Stopień doktora habilitowanego nauk technicznych – Wydział Elektrotechniki i Automatyki PG. Rozprawa habilitacyjna „Układy napędowe z silnikami indukcyjnymi i filtrami wyjściowymi falowników. Zagadnienia wybrane”. Kolokwium i nadanie stopnia doktora habilitowanego 29 maja 2012 r. Monografia uzyskała nagrodę naukową Wydziału IV Nauk Technicznych Polskiej...

• Voltage Transients Transfer over Medium Voltage Instrument Transformers

  Publikacja

  • J. Łuszcz

  - Rok 2011

  This paper presents voltage harmonic transfer accuracy problems through voltage transformers which are used in power quality monitoring systems in medium and high voltage grids. A simplified lumped parameters circuit model of the voltage transformer is proposed and verified by simulation and experimental investigations. A number voltage transformers typically used in medium voltage grid has been tested in the conducted disturbances...

• Voltage Harmonics Transfer through Medium Voltage Instrument Transformers

  Publikacja

  • J. Łuszcz

  - Przegląd Elektrotechniczny - Rok 2012

  Voltage transformers are widely used in power quality monitoring systems in medium and high voltage grids. This paper presents accuracy problems related to voltage harmonics transfer through instrument transformers. A simplified lumped-parameters wideband circuit model of the voltage transformer is proposed and verified by simulation and experimental investigations. A number of voltage transformers have been tested in the frequency...

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• A current-controlled FET

  Publikacja

  • W. Kordalski

  - Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne - Rok 2007

  A novel semiconductor device, viz., Horizontally-Split-Drain Current-Controlled Field-Effect Transistor (HSDCCFET) with two control electrodes is proposed in this works. For the sake of brevity, the device can be called a CCFET. Operating principle of the proposed transistor is based on one of the galvanomagnetic phenomena, the Biot-Savart-Laplace law and a Gradual Channel Detachment Effect (GCDE). The transistor is dedicated...

• Fault loop impedance measurement in low voltage network with residual current devices

  Publikacja

  • S. Czapp

  - Elektronika Ir Elektrotechnika - Rok 2012

  W sieciach i instalacjach niskiego napięcia z wyłącznikami różnicowoprądowymi pomiar impedancji pętli zwarciowej jest kłopotliwy. Prąd pomiarowy powoduje ich zbędne zadziałanie, co uniemożliwia prawidłowe wykonanie pomiaru. W artykule omówiono przyczyny zbędnego zadziałania wyłączników różnicowoprądowych podczas pomiaru impedancji pętli zwarciowej oraz warunki, w jakich ten pomiar można wykonać poprawnie.

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• Structural Investigations and Determination of Current and Voltage Characteristics in Htsc 2G SF12050 Tapes

  Publikacja

  • J. Jędryka
  • M. Szota
  • M. Nabiałek

  - ARCHIVES OF METALLURGY AND MATERIALS - Rok 2011

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• Computer simulation of current voltage response of elektrocatalytic sensor.Optoelectronic and Electronic Sensors V.

  Publikacja

  • P. Jasiński
  • G. Jasiński
  • B. Chachulski
  • A. Z. Nowakowski

  - Proceedings of SPIE - Rok 2003

  W pracy przedstawiono wyniki symulacji komputerowej działania czujnika elektrokatalitycznego. Do badań wykorzystano program D. Gossera opierający się na metodzie różnic skończonych.

• Temperature effect on the current-voltage characteristic fill factor for the silicon solar cells

  Publikacja

  • E. Klugmann-Radziemska

  - Rok 2004

  W pracy przedstawiono badania wpływu temperatury pracy krzemowych ogniw fotowoltaicznych na wartość współczynnika wypełnienia charakterystyki prądowo- napięciowej (FF). Efekty dyfuzyjne w obszarze złącza oraz rekombinacja nośników ładunku ograniczają wartość współczynnika wypełnienia charakterystyki. Spadek tej wartości wynika głównie ze wzrostu wartości rezystancji szeregowej rs. Na rezystancję szeregową składają się: opór emitera...

• Open-transistor fault diagnostics in voltage-source inverters by analyzing the load current

  Publikacja

  • W. Śleszyński
  • J. Nieznański
  • A. Cichowski

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Rok 2009

  Przedstawiono nową metodę detekcji i lokalizacji uszkodzeń polegających na braku przewodzenia tranzystorów w falownikach napięcia zasilających silniki indukcyjne. Metoda jest rozszerzeniem, opracowanej wcześniej, metody wykorzystującej znormalizowane składowe stałe prądów obciążenia. Znormalizowane wartości średnie prądów powiązano z dodatkowymi wskaźnikami diagnostycznymi, które zawierają informacje o czasie trwania nieprzewodzenia...

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• Series Passive Compensation of Common Mode Voltage in Multilevel Inverter Drives

  Publikacja

  • A. Kempski
  • R. Smolenski
  • R. Strzelecki

  - Rok 2005

  This paper presents an approach to the problem of a magnetic saturation of CM chokes that accompanies the method of passive compensation of a common mode (CM) voltage in an inverter drive system. Measurements have been provided in a drive system including multilevel inverters and the filter having sinusoidal output voltages and zero CM voltage. The theoretical analysis and experimental results show that the problem with magnetic...

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• A novel concept for tissue-metal detection and differentiation using an inductive proximity sensor

  Publikacja

  • A. Gorczewska
  • A. Poliński
  • J. Wtorek
  • B. Truyen

  - Rok 2016

  In this paper a novel application of inductive proximity sensors for detection of living tissue by means of measurements of the coil impedance changes at different frequencies is described. The mathematical analyses utilizing Bessel function estimation include detected object size and its distance from a sensor. The main aim of this study is to prove the possibility of distinguishing between metal objects and living tissues. The...

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• The voltage across and current through the RC model object tested using pulse excitation in impedance spectroscopy measurement method

  Dane Badawcze

  open access

  • G. Lentka

  The raw data (voltage across and current through RC model object ) obtained using pulse excitation EIS impedance spectroscopy measurement method. The data was acquired using 12-bit ADC (LTC1420) with sampling frequency changed in time segments. The 1V voltage pulse excitation duration was set to 0.1s and the total acqusition time was set to 1000s. For...

• Rapid ion-exchange matrix removal for a decrease of detection limits in the analysis of salt-rich reservoir waters for fluorobenzoic acids by liquid chromatography coupled with tandem mass spectrometry

  Publikacja

  • P. Kubica
  • V. Vacchina
  • T. Wasilewski
  • S. Reynaud
  • J. Szpunar
  • R. Lobinski

  - ANALYTICAL AND BIOANALYTICAL CHEMISTRY - Rok 2017

  A matrix removal procedure with ion-exchange resin prior to analysis for 18 fluorinated benzoic acids (FBAs) tracers in saline (>25% salt) reservoir water was optimized. The elimination of >98% of salt and the simultaneous matrix sample cleanup allowed the direct analysis using the supernatant by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). This resulted in a gain in detection limits for most of the tracers...

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• Time-current tripping characteristics of RCDs for sinusoidal testing current

  Publikacja

  • S. Czapp

  - Rok 2021

  Low-voltage electrical installations are verified initially – before being put into operation, as well as periodically – during their utilization. According to the IEC standards, the scope of the verification includes measurements of both the tripping current and the disconnection time of residual current devices (RCDs). Experiences in RCDs testing show that disconnection times of two or more similar RCDs can be quite different....

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• Improving voltage levels in low-voltage networks with distributed generation – case study

  Publikacja

  • R. Kowalak
  • S. Czapp

  - Rok 2018

  The use of distributed generation in low-voltage networks may cause the voltage variation in them, within the wide range. In unfavourable circumstances, the voltage may reach unacceptable values. The paper presents the effect of distributed generation on voltage levels in a selected low-voltage rural distribution network in Poland. An analysis of possible methods for improving voltage levels in this network is conducted. The most...

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• Comparison of properties of the new electro-mechanical model and circumferential model of the inductive-dynamic drive

  Publikacja

  • P. Jankowski
  • M. Wołoszyn

  - INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS - Rok 2019

  The article presents a new electromechanical model of inductive-dynamic drive. The model is implemented in two environments: Maxwell for analyzing electrodynamic phenomena including moving of the disc and Ansys which allows for stress analysis on the basis of the volume forces imported from Maxwell. Additionally, a model validation by comparing with the existing circumferential model was carried out.

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• Leakage Current Measurements of Surge Arresters

  Publikacja

  • M. Olesz
  • L. Litzbarski
  • G. Redlarski

  - ENERGIES - Rok 2023

  The paper presents the methods of assessing the technical condition of varistor surge arresters used in laboratory tests and in operation—performed without disconnecting the arresters from the network. The analysis of the diagnostic methods was supplemented with the results of the measurements of the leakage current of arresters coming directly from their production and used in the power industry. Among the available methods of...

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• Medium-Voltage Drives: Challenges and existing technology

  Publikacja

  • H. Abu-Rub
  • S. Bayhan
  • S. Moinoddin
  • M. Malinowski
  • J. Guziński

  - IEEE Power Eelectronics Magazine - Rok 2016

  The article presents an overview of state-of-art solutions, advances, and design and research trends in medium-voltage (MV) drive technologies - and also discusses the challenges and requirements associated with the use of such drives. The choice and deployment of MV drives in industries are associated with numerous requirements related to the front-end converter (grid side) and inverter (machine side). The focus is on solutions...

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• Efficient Surrogate Modeling and Design Optimization of Compact Integrated On-Chip Inductors Based on Multi-Fidelity EM Simulation Models

  Publikacja

  • P. Kurgan

  - Micromachines - Rok 2021

  High-performance and small-size on-chip inductors play a critical role in contemporary radio-frequency integrated circuits. This work presents a reliable surrogate modeling technique combining low-fidelity EM simulation models, response surface approximations based on kriging interpolation, and space mapping technology. The reported method is useful for the development of broadband and highly accurate data-driven models of integrated...

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• Nonreciprocal properties of elliptical ferrite coupled line junction

  Publikacja

  • A. Kusiek
  • W. Marynowski
  • J. Mazur

  - Rok 2016

  In this paper the nonreciprocal properties of el-liptical ferrite coupled line (EFCL) junction are examined. In the analysis the technique combining spectral-domain approach (SDA) with coupled-mode method (CMM) is applied. The nu-merical results concerning gyromagnetic coupling coefficient of ferrite coupled lines and scattering matrix of EFCL junction are presented. The obtained results are validated with the use of commercial...

• Analysis of AC/DC/DC Converter Modules for Direct Current Fast-Charging Applications

  Publikacja

  • S. Piasecki
  • J. Zaleski
  • M. Jasinski
  • S. Bachman
  • M. Turzyński

  - ENERGIES - Rok 2021

  The paper is a comprehensive laboratory comparison study of two galvanic isolated solution off-board battery chargers: (1) Si-based cost-effective case, and (2) SiC-bidirectional ready for vehicle to grid concept case. All circuits are modular, and in both cases the DC/DC converter can be replaced according to the end user requirements (the coupled transformer remains the same and is constructed based on 12xC100 cores to avoid...

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• MATRIX BIOLOGY

  Czasopisma

  ISSN: 0945-053X , eISSN: 1569-1802

• Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

  Publikacja

  • V. Shevchenko
  • B. Pakhaliuk
  • O. Husev
  • O. Veligorskyi
  • D. Stepins
  • R. Strzelecki

  - ENERGIES - Rok 2020

  A promising solution for inductive power transfer and wireless charging is presented on the basis of a single-phase three-level T-type Neutral Point Clamped GaN-based inverter with two coupled transmitting coils. The article focuses on the feasibility study of GaN transistor application in the wireless power transfer system based on the T-type inverter on the primary side. An analysis of power losses in the main components of the...

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• Voltage variations and their reduction in a rural low-voltage network with PV sources of energy

  Publikacja

  • A. Szultka
  • S. Szultka
  • S. Czapp
  • R. Zajczyk

  - Electronics - Rok 2021

  Renewable sources of energy (RES), especially photovoltaic (PV) micro-sources, are very popular in many countries. This way of clean power production is applied on a wide scale in Poland as well. The Polish legal regulations and tariffs specify that every prosumer in a low-voltage network may feed this network with a power not higher than the maximum declared consumed power. In power networks with RES, the voltage level changes...

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• Quasi-resonant DC-link voltage inverter with enhanced zero-voltage switching control

  Publikacja

  • M. Turzyński
  • P. Chrzan
  • M. Kolincio
  • S. Burkiewicz

  - Rok 2017

  A new topology modification of the parallel quasi-resonant circuit for a dc-link voltage inverter enables regulation of the zero voltage dc-link subperiods and the dc-link voltage gradient settings. The proposed circuit is based on four MOSFET switches with free-wheeling diodes for controlled quasi-resonant recharging between L-C tank in order to assure inverter zero voltage switching (ZVS) conditions. Design optimization of the...

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• Coupled Systems Mechanics

  Czasopisma

  ISSN: 2234-2184 , eISSN: 2234-2192

• The Impact of Micro-Sources on Voltage Distortions in a Power Grid

  Publikacja

  • M. Grzymkowska
  • J. Klucznik

  - Acta Energetica - Rok 2020

  The increase in the number of photovoltaic (PV) systems integrated with low voltage (LV) grids has led to a great need to analyse the impact of these systems on the quality of electricity and the reliability of its supply. This paper presents and compares the energy quality requirements imposed by various countries on photovoltaic plants. Then, based on real object tests and simulation in DIgSILENT PowerFactory, the impact has...

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• Expedite EM-driven generation of Pareto-optimal trade-off curves for variable-turn on-chip inductors

  Publikacja

  • S. Kozieł
  • P. Kurgan

  - IET Microwaves Antennas & Propagation - Rok 2018

  This work presents a novel approach to computationally efficient Pareto front identification for variable-turn on-chip inductors. The final outcome is a set of solutions that correspond to the best trade-offs between conflicting design objectives. Here, we consider minimising inductor area and, simultaneously, maximising its quality factor, while maintaining a specified inductance value at a given operating frequency. As opposed...

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• Quality assessment of low voltage surge arresters

  Publikacja

  • L. Litzbarski
  • M. Olesz
  • S. Wojtas
  • M. J. Winiarski
  • T. Klimczuk
  • H. Glowinski
  • B. Andrzejewski

  - IEEE Access - Rok 2022

  Users expect reliable operation of the surge arrester during overvoltages, which may originate from a switching process or a lightning discharge. The necessary conditions to guarantee these expectations are: appropriate construction of the surge arrester, its production being maintained in accordance with technical standards, and a positive results of the type test (as well routine and acceptance tests). The recipient, especially...

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• Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

  Publikacja

  • K. Ullah

  - Rok 2021

  Matrix converter is an AC-AC direct power converter comprising of an array of bi- directional switches. It does not require an intermediate DC-link and allows sinusoidal output waveforms with varying amplitudes and frequencies. The configuration of these bi- directional switches decides the number of inputs and outputs...

• Voltage profiles improvement in a power network with PV energy sources – results of a voltage regulator implementation

  Publikacja

  • A. Szultka
  • S. Szultka
  • S. Czapp
  • R. Karolak
  • M. Andrzejewski
  • J. Kapitaniak
  • M. Kulling
  • J. Bonk

  - ENERGIES - Rok 2022

  The constant increase in the number of photovoltaic (PV) energy sources in distribution networks is the cause of serious voltage problems. The networks built at least a dozen years ago are not provided for the installation of a large number of micro-sources. It happens that the previously properly functioning power networks are not able to provide to consumers power with the required parameters, after installing many PV sources....

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• Current Source Inverter Fed Drive

  Publikacja

  • M. Morawiec
  • A. Lewicki

  - Rok 2021

  This book covers three-phase and multiphase (more than three-phase) motor drives including their control and practical problems faced in the field (e.g., adding LC filters in the output of a feeding converter), are considered. The new edition contains links to Matlab®/Simulink models and PowerPoint slides ideal for teaching and understanding the material contained within the book. Readers will also benefit from the inclusion of: A...

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• Longitudinally magnetized left-handed cylindrical ferrite coupled line junction for nonreciprocal devices

  Publikacja

  • A. Kusiek
  • W. Marynowski
  • J. Mazur

  - Rok 2014

  This paper presents investigations of longitudinally magnetized left-handed cylindrical ferrite coupled line junction for nonreciprocal devices. The proposed junction is formed as a quasi periodic arrangement of N unit cells. Each unit cell is realized as a cascade of short cylindrical ferrite coupled lines with reactance circuit composed of series capacitors and parallel inductors. The left-handed cylindrical junction with π/4...

• Mykola Lukianov mgr

  Osoby

  Katedra Energoelektroniki i Maszyn Elektrycznych

  Mykola Lukianov received a B.Sc. and M.Sc degree in Electronics and Communications from the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” in 2018 and 2020 respectively. He is currently a PhD student at the Gdansk University of Technology, Poland and a researcher group member in project SMARTGYsum “Research and Training Network for Smart and Green Energy Systems and Business Models”. His research...

• Low current transformer utilizing Co-based amorphous alloys

  Publikacja

  • J. Salach
  • L. Hasse
  • R. Szewczyk
  • J. Smulko
  • A. Bieńkowski
  • P. Frydrychowicz
  • A. Kolano-Burian

  - IEEE TRANSACTIONS ON MAGNETICS - Rok 2011

  Metal oxide surge arresters have been widely used for protection of power system networks against overvoltages due to atmospheric discharges or malfunction of devices connected to the network. During its operation a surge arrester structure is degradated, what can be observed as an increase of a surge arrester leakage current. Paper presents an implementation of a new, high-permeability, Co64Fe4Ni1Si15B14 amorphous alloy as a current...

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• Low Current Transformer Utilizing Co-Based Amorphous Alloys

  Publikacja

  • J. Salach
  • L. Hasse
  • R. Szewczyk
  • J. Smulko
  • A. Bieńkowski
  • P. Frydrychowicz
  • A. Kolano-Burian

  - IEEE TRANSACTIONS ON MAGNETICS - Rok 2012

  Metal oxide surge arresters have been widely used for protection of power system networks against overvoltages due to atmospheric discharges or malfunction of devices connected to the network. During its operation a surge arrester structure is degradated, what can be observed as an increase of a surge arrester leakage current. Paper presents an implementation of a new, high-permeability, Co64Fe4Ni1Si15B14 amorphous alloy as a current...

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• Multiple output CMOS current amplifier

  Publikacja

  • B. Pankiewicz

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2016

  In this paper the multiple output current amplifier basic cell is proposed. The triple output current mirror and current follower circuit are described in detail. The cell consists of a split nMOS differential pair and accompanying biasing current sources. It is suitable for low voltage operation and exhibits highly linear DC response. Through cell devices scaling, not only unity, but also any current gains are achievable. As...

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• A low-voltage CMOS negative impedance converter for analogue filtering applications

  Publikacja

  • W. Jendernalik

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2007

  Low-voltage high-frequency continuous-time filters are still required in many applications and are the subject of continuing research. There are many techniques to realize integrated filters, including OTA C, Opamp RC and MOSFET-C-Opamp. The latter two show high dynamic range at low supply voltage, but their frequency operating range is usually limited to several megahertz. Transconductance filters are dedicated to higher frequencies....

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• Reducing common mode voltage and bearing currents in quasi - resonant DC - link inverter

  Publikacja

  • M. Turzyński
  • P. Chrzan

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2020

  In the paper, a concept of separation of an inverter-fed induction motor drive from its mains supply by two transistor switches inserted in the dc-link circuit is reexamined based on the proposed parallel quasi-resonant dc-link inverter (PQRDCLI). The objective of the paper is to show an advantage of the proposed topology in limiting high frequency common mode voltage and bearing currents. In the laboratory setup, an induction...

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• Current trends in analytical strategies for determination of polybrominated diphenyl ethers (PBDEs) in samples with different matrix compositions – Part 1.: Screening of new developments in sample preparation

  Publikacja

  • M. Śmiełowska
  • B. Zabiegała

  - TRAC-TRENDS IN ANALYTICAL CHEMISTRY - Rok 2020

  Polybrominated diphenyl ethers (PBDEs) are ubiquitous compounds in the environment. Restrictions on the use of PBDEs introduced at the beginning of the 21st century have not eliminated these highly persistent and bioaccumulative compounds from the environment. Despite many existing regulations to control and phase out, extensive research on PBDEs is still necessary to fully evaluate the hazard their create to the environment. In...

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• Analysis of resistive and inductive heating of railway turnouts

  Publikacja

  • M. Wołoszyn
  • K. Jakubiuk
  • M. Flis

  - Przegląd Elektrotechniczny - Rok 2016

  Elektryczne ogrzewanie rozjazdów kolejowych jest istotnym problemem technicznym i ekonomicznym. Z tych względów potrzebne są badania w celu optymalizacji systemu ogrzewania rozjazdów kolejowych. W artykule przedstawiono analizę porównawczą strat energii podczas ogrzewania rozjazdów kolejowych z wykorzystaniem dwóch różnych metod. Analiza ogrzewania rozjazdów przeprowadzono w programie ANSYS.(Analiza oporowego i indukcyjnego nagrzewania...

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• Closed-Loop Control System Design for Wireless Charging of Low-Voltage EV Batteries with Time-Delay Constraints

  Publikacja

  • V. Shevchenko
  • B. Pakhaliuk
  • J. Zakis
  • O. Veligorskyi
  • J. Łuszcz
  • O. Husev
  • O. Lytvyn
  • O. Matiushkin

  - ENERGIES - Rok 2021

  This paper presents an inductive power transfer system on the basis of a double single- phase three-level T-type inverter and two split transmitting coils for constant current and constant voltage wireless charging of low-voltage light electric vehicle batteries with closed-loop control, considering time-delay communication constraints. An optimal control structure and a modified control strategy were chosen and implemented to...

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• Detection of high frequency current components by residual current devices

  Publikacja

  • S. Czapp
  • K. Dobrzyński
  • J. Klucznik
  • R. Kowalak
  • Z. Lubośny
  • R. Małkowski

  - Rok 2014

  The negative impact of current harmonics on the main components of residual current devices is presented. A solution for the improvement of the operation of residual current devices is proposed.