Search results for: przetwornica ac-dc

• Single and Three -Phase PWM AC/AC Converters as Semiconductor Transformers

  Publication

  • R. Strzelecki
  • N. Strzelecka

  - Year 2020

  AC voltage transformation circuits contain pure or reactance PWM AC/AC converters. These circuits can be treated as AC/AC semiconductor transformers. This paper reviews single-phase and three-phase topologies: both non-isolated and isolated, single as well as two quadrant structure. Additionally, this paper present selected examples of their applications.

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• Low Frequency Conducted Emissions of Grid Connected Static Converters

  Publication

  • J. Łuszcz
  • R. Smolenski

  - IEEE Electromagnetic Compatibility Magazine - Year 2015

  Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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• High Frequency Harmonics Emission in Smart Grids

  Publication

  • J. Łuszcz

  - Year 2013

  Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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• The conducted EMI in DC-DC converters

  Publication

  • P. Musznicki

  - Year 2018

  This book presents the phenomena of conducted electromagnetic interference (EMI) generation in DC-DC converters. The measurement and simulation are used to analyze the impact of the most important parameters on the character, level and propagation path of interference. In this book, the analysis of the interference generation and propagation is presented on the example of three basic converters. The wide banded behavior of all...

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• The new SDMT-family of servo-drives for CNC systems with AC permanent magnet synchronous motors

  Publication

  • K. Z. Karwowski
  • K. Karwowski
  • S. Mandra
  • M. Mizan
  • A. Wawrzak

  - Year 2006

  W artykule przedstawiono strategię sterowania podstawowe parametry oraz wyniki badań nowej rodziny serwonapędów typu SDMT. Układ sterowania serwonapędu zbudowano na procesorze sygnałowym TMS320F2812 firmy Texas Instruments. W serwonapędzie zastosowano metodę sterowania tupu FOC (ang. Field Oriented Control). Regulatory położenia, prędkości i momentu zreali-zowano na bazie klasycznego regulatora PID z układem ograniczenie sygnału...

• Cost-Effective Piggyback Forward dc-dc Converter

  Publication

  • O. Matiushkin
  • O. Husev
  • H. Afshari
  • D. Vinnikov
  • R. Strzelecki

  - Year 2024

  The novel piggyback dc-dc converter as a cost-effective solution is presented in this work. It provides a wide input voltage range of regulation with a low component count. The novel solution is an advanced forward dc-dc converter with an additional clamp output capacitor. The idea of such a type of converter is to transfer magnetizing energy of transformer to the output side, instead of using input clamp circuit. The design guidelines...

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• Prediction of ringing frequencies in DC-DC boost converter

  Publication

  • P. Musznicki
  • M. Ruciński
  • M. Turzyński
  • S. Abramik

  - Year 2016

  In the paper ringing phenomena in a DC-DC boost converter is presented. The ringing frequency is calculated using an analytical formula. The necessary wide band models of MOSFET transistor, passive and parasitics are described. The calculation results are verified in simulation and laboratory tests.

• Badania symulacyjne wysokonapięciowej przetwornicy DC/DC

  Publication

  • K. Blecharz

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2013

  W artykule zaprezentowano wyniki badań symulacyjnych przekształtnika energoelektronicznego typu DC/DC działającego w układzie niepełnego mostka z transformatorem izolacyjnym pracującym przy dużej częstotliwości. Badania symulacyjne wykonano posługując się pakietem Matlab-Simulink z biblioteką SimPowerSystems. Omówiono problemy zastosowania wysokonapięciowych tranzystorów z izolowaną bramką do konstrukcji przekształtników wysokiego...

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• AC loss measurements in superconducting magnet

  Publication

  • P. Szwangruber

  - Year 2008

  This report contains ordered theoretical informations about AC loss in superconducting magnets and cables. A software program to evaluate data from AC loss measurements with V-I method was made and it is also described. Examples of measurement data and result data are shown here.

• Modeling of conducted emission of dc-dc switch-mode converter

  Publication

  • W. Władziński
  • P. Chrzan
  • P. Musznicki

  - Year 2003

  W publikacji zaprezentowano sposób modelowania i wyznaczania emisji przewodzonej zaburzeń elektromagnetycznych w przekształtnikach energoelektronicznych. Na przykładzie przekształtnika DC-DC, zostały dobrane odpowiednie narzędzia CAD do szerokopasmowego modelowania i symulacji przekształtnika energoelektronicznego. Otrzymane rezultaty zostały eksperymentalnie potwierdzone i porównane zarówno w dziedzinie czasu jak i częstotliwości...

• Wielotransformatorowy quasi-rezonansowy przekształtnik DC-DC

  Publication

  • M. Kolincio

  - Year 2019

  W rozprawie przedstawiono oryginalną koncepcję wielotransformatorowego przekształtnika dwutaktowego dc/dc z wieloma wyjściami o sterowaniu quasi-rezonansowym. Przeprowadzono analizę modelu obwodowego przekształtnika w układzie n-transformatorowym. Na podstawie bilansu energetycznego określono wpływ indukcyjności rozproszenia transformatorów i współczynnika asymetrii obciążenia na uchyb regulacji skrośnej napięć wyjściowych. W celu...

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• Selected aspects of the operation of Dual Active Bridge DC/DC converters

  Publication

  • S. Bachman
  • M. Turzyński
  • M. Jasinski

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2024

  This review paper discusses the concept of a bidirectional dual active bridge (DAB) DC/DC converter. Practical applications and control methods are explored, and various types of DAB converters are introduced and characterized. Aspects of operation are discussed, and enriched by the results of theoretical analyses, simulations, and experimental measurements of the original authors’ work.

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• Przekształtnik SiC DC-DC z transformatorem macierzowym do pokładowych ładowarek baterii akumulatorów taboru 3kV DC

  Publication

  • M. Adamowicz
  • J. Pietryka
  • Z. Krzemiński

  - Year 2022

  Baterie akumulatorów pojazdów trakcyjnych zapewniają zasilanie krytycznych systemów, takich jak sterowanie i oświetlenie. Zgodnie z wymaganiami przemysłu kolejowego, pokładowa ładowarka baterii akumulatorów powinna być urządzeniem kompaktowym, wysokosprawnym, a jednocześnie wysoce niezawodnym. W referacie, do pokładowego ładowania akumulatorów pociągu zaproponowano kompaktowy przekształtnik SiC DC-DC z transformatorem macierzowym...

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• Przekształtnik SiC DC-DC z transformatorem macierzowym do pokładowych ładowarek baterii akumulatorów taboru 3kV DC

  Publication

  • M. Adamowicz
  • J. Pietryka
  • Z. Krzemiński

  - Przegląd Elektrotechniczny - Year 2023

  Baterie akumulatorów pojazdów trakcyjnych zapewniają zasilanie krytycznych systemów, takich jak sterowanie i oświetlenie. Zgodnie z wymaganiami przemysłu kolejowego, pokładowa ładowarka baterii akumulatorów powinna być urządzeniem kompaktowym, wysokosprawnym, a jednocześnie wysoce niezawodnym. W referacie, do pokładowego ładowania akumulatorów pociągu zaproponowano kompaktowy przekształtnik SiC DC-DC z transformatorem macierzowym...

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• AC Motor Voltage and Audible Noise Dataset

  Publication

  • B. Pałczyńska

  - Year 2022

  The dataset titled AC motor voltage and audible noise waveforms in ship’s electrical drive systems with frequency converters contains the voltage and sound measurement results recorded in a marine frequency controlled AC drive system. The dataset is part of research focussing on the impact of the ship’s electrical drive systems with frequency converters on vibrations and the level of audible noise on ships. The dataset allows the...

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• Wideband Modeling of DC-DC Buck Converter with GaN Transistors

  Publication

  • P. Musznicki
  • P. Derkacz
  • P. Chrzan

  - ENERGIES - Year 2021

  The general wideband modeling method of the power converter is presented on the example of DC-DC buck converter with GaN High Electron Mobility Transistors (HEMT). The models of all basic and parasitic components are briefly described. The two methods of Printed Circuit Board (PCB) layout parameter extraction are presented. The results of simulation in Saber@Sketch simulation software and measurements are compared. Next, the model...

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• Optimisation of ZVZCS DC/DC converter with tapped inductor.

  Publication

  • Z. Krzemiński
  • K. Kowalewski
  • A. Lewicki

  - Year 2004

  W artykule zaprezentowano możliwości wykorzystania dławika z odczepem oraz obwodu LC w celu uzyskania warunków miękkiej komutacji kluczy energoelektronicznych w przetwornicy DC-DC.Na podstawie modelu matematycznego zbadany został wpływ wartości elementów na zachowanie miękkiej komutacji.Przedstawiono wyniki badań symulacyjnych i eksperymentalnych.

• Modelowanie układu przetwornicy rezonansowej dc-dc z miękką komutacją tranzystorów.

  Publication

  • K. Kowalewski
  • A. Lewicki

  - Year 2004

  W referacie zaprezentowano model matematyczny przetwornicy DC-DC, który umożliwia przeprowadzenie badań symulacyjnych układu przetwornicy oraz dobór parametrów głównych jej elementów.

• Step-Up DC/DC Converters With Cascaded Quasi-Z-Source Network

  Publication

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

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2012

  W artykule zaprezentowano nowe rozwiązania dotyczące przekształtników energoelektronicznych DC-DC podwyższających napięcie z ogniw paliwowych. Istota rozwiązania zawiera się w zastosowaniu kaskadowo połączonych wejściowych obwodów pasywnych typu Quasi-Z, umozliwiających znaczne podwyższanie napięcia z wykorzystaniem stanu parcy zwarć gałęzi tranzystorowych przekształtnika.

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• Ładowanie baterii akumulatorów przy wykorzystaniu przetwornicy dc/dc ze sterowaniem mikroprocesorowym

  Publication

  • K. Korycki
  • D. Soczyński
  • J. Skibicki

  - Year 2005

  W referacie przedstawiono metodologię procesu ładowania baterii akumulatorów kwasowo - ołowiowych, z wykorzystaniem nowoczesnego prostownika impulsowego (przetwornicy DC/DC), sterowanego mikroprocesorem. Zaprezentowano i omówiono wyniki analizy energetycznej i sprawnościowej dla wybranej metody ładowania. Przedstawiono wady i zalety ładowania akumulatorów kwasowo - ołowiowych prądem o charakterze impulsowym i wysokiej częstotliwości...

• Non-isolated resonant quasi-Z-source network DC–DC converter

  Publication

  • M. Adamowicz

  - ELECTRONICS LETTERS - Year 2019

  A novel non-isolated resonant quasi-impedance (quasi-Z)-source network DC–DC converter is proposed. The resonant impedance source network is derived from the quasi-Z-source network by including the autotransformer-based resonant cell instead of the second inductor of the quasi-Z-network. The leakage inductance of the autotransformer and two resonant capacitors connected in series with the autotransformer windings constitute a high-frequency...

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• Adaptive estimation of the transformer stray capacitances for DC–DC converter modelling

  Publication

  • P. Musznicki
  • P. Chrzan
  • M. Ruciński
  • M. Kolincio

  - IET Power Electronics - Year 2016

  New low cost and accurate estimation method of transformer stray capacitances for wide band DC–DC converter modelling and design is proposed. The Wiener filter (WF) method is applied to estimate the transformer impedance – referred to the selected transformer winding configurations. Laboratory tests are used to adapt the filter, that is to find optimal impedance which minimises mean square error between measured, noise perturbed...

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• EMI attenuation in a DC-DC buck converter using GaN HEMT

  Publication

  • P. Derkacz
  • P. Musznicki
  • P. Chrzan

  - IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS - Year 2021

  A dc-dc buck converter using gallium nitride (GaN) high electron mobility transistors (HEMT) is experimentally investigated at the discontinuous current mode (DCM) and at the triangular current mode (TCM) operation. The paper objective is to specify the power conversion efficiency and attenuation of common mode (CM) and differential mode (DM) noise voltage, measured at the line impedance stabilization network (LISN) for compared...

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• Design of a SiC based triple active bridge ceil for a multi-megawatt DC-DC converter

  Publication

  • M. Jose
  • R. Ryndzionek
  • T. Lagier
  • P. Dworakowski
  • C. Buttay

  - Year 2017

  The paper describes the design methodology of a novel Triple Active Bridge cell used as the building block for modular DC-DC converters. The intended application is for Medium Voltage Direct Current grids, such as the DC collector for offshore wind farms. The latest generation of SiC MOSFET semiconductors is utilized to operate in the medium frequency range while optimizing the efficiency. The dimensioning of the main cell components,...

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• Destructive impact of PWM inverters on traction AC motors

  Publication

  • J. Łuszcz
  • P. Dworakowski

  - ELECTROMOTION - Year 2010

  The electric traction drives with an AC motor fed by a frequency converter are used more and more often nowadays. The most significant side effects, of a converter's output voltage forming PWM method for AC motor windings, are steep voltage changes, which can initiate several destructive phenomena. The paper presents the adverse influence of a converter common mode voltage on the motor windings's increased voltage exposure and...

• Wpływ parametrów elementów układu przetwornicy rezonansowej dc-dc na zachowanie warunków miękkiej komutacji.

  Publication

  • K. Kowalewski
  • A. Lewicki

  - Year 2004

  W artykule zaprezentowano topologię układu przetwornicy rezonansowej DC-DC, zapewniającą bezprądową oraz beznapięciową komutację tranzystorów (ZVZCS). Warunki miękkiej komutacji uzyskano dzięki zastosowaniu dławika dzielonego oraz dodatkowego obwodu LC. W oparciu o badania symulacyjne przeanalizowano wpływ parametrów wybranych elementów na pracę przetwornicy DC-DC.

• Structural, magnetic and spectral properties of tetrahedral cobalt(II) silanethiolates: a variety of structures and manifestation of field-induced slow magnetic relaxation

  Publication

  • D. Kowalkowska-Zedler
  • A. Dołęga
  • N. Nedelko
  • R. Łyszczek
  • P. Aleshkevych
  • I. Demchenko
  • J. Łuczak
  • A. Ślawska-waniewska
  • A. Pladzyk

  - DALTON TRANSACTIONS - Year 2020

  Blue crystals of five heteroleptic cobalt(II) silanethiolates 1–5 have been obtained by the reaction of [Co{SSi (tBuO)3}2(NH3)]2 with aminopyridines and aminomethylpyridines at an appropriate molar ratio and their structural, spectral, thermal and magnetic properties have been established and described. All complexes 1–5 contain Co(II) ions in a tetrahedral CoN2S2 environment formed by (tBuO)3SiS− residues and pyridines and present...

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• Accurate modeling of layout parasitic to forecast EMI emitted from a DC-DC converter.

  Publication

  • P. Musznicki
  • J. Schanen
  • B. Allard
  • P. Chrzan

  - Year 2004

  This paper illustrates how to account for all parasitic due to the layout of a power converter (inductive and capacitive), in order to forecast electromagnetic interferences (EMI). The method is generic, and is validated here in the simple example of a DC-DC converter, realized on different technologies: insulated metal substrate (IMS), printed circuit board (PCB). In addition, several layouts aspects will be investigated. Conclusions...

• Destructive Consequences of PWM Inverter Feeding for Traction AC Motors

  Publication

  • J. Łuszcz
  • P. Dworakowski

  - Year 2009

  The electric traction drives with an AC motor fed by a frequency converter are used more and more often nowadays. The most significant side effects, of a converter's output voltage forming PWM method for AC motor windings, are steep voltage changes, which can initiate several destructive phenomena. The paper presents the adverse influence of a converter common mode voltage on the motor windings' increased voltage exposure and the...

• FPGA-Based System for Electromagnetic Interference Evaluation in Random Modulated DC/DC Converters

  Publication

  • H. Loschi
  • P. Lezynski
  • R. Smolenski
  • D. Nascimento
  • W. Śleszyński

  - ENERGIES - Year 2020

  Field-Programmable Gate Array (FPGA) provides the possibility to design new “electromagnetic compatibility (EMC) friendly” control techniques for power electronic converters. Such control techniques use pseudo-random modulators (RanM) to control the converter switches. However, some issues connected with the FPGA-based design of RanM, such as matching the range of fixed-point numbers, might be challenging. The modern programming...

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• Estimation of the uncertainty of the AC/AC transducer output voltage

  Publication

  • A. Dzwonkowski
  • A. Golijanek-Jędrzejczyk

  - Przegląd Elektrotechniczny - Year 2015

  The paper presents a methodology for estimating uncertainty of voltage transducers processing function, on the example of CYVS411D07 voltage transducers. The analysis was conducted using the method based on the GUM Guide propagation of uncertainty law and the determination of the coverage factor based on the effective number of degrees of freedom (t-Student distribution). The paper also presents example evaluation results of measured...

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• Accurate electrothermal modelling of high frequency DC-DC converters with discrete IGBTs in PLECS software

  Publication

  • P. Gorecki
  • D. Wojciechowski

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2023

  In the paper, a novel, improved method of the IGBT junction temperature computations in the PLECS simulation software is presented. The developed method aims at accuracy of the junction temperature computations in PLECS by utilising a more sophisticated model of transistor losses, and by taking into account variability of transistor thermal resistance as a function of its temperature. A detailed description of the proposed method,...

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• Unidirectional DC/DC Converter with Voltage Inverter for Fast Charging of Electric Vehicle Batteries

  Publication

  • J. R. Szymanski
  • M. Żurek-mortka
  • D. Wojciechowski
  • N. Poliakov

  - ENERGIES - Year 2020

  The paper proposes the adaptation of the industrial plant’s power network to supply electric vehicle (EV) fast-charging converters (above 300 kW) using renewable energy sources (RESs). A 600 V DC microgrid was used to supply energy from RESs for the needs of variable speed motor drives and charging of EV batteries. It has been shown that it is possible to support the supply of drive voltage frequency converters (VFCs) and charging...

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• Light-Powered Starter for Micro-Power Boost DC–DC Converter for CMOS Image Sensors

  Publication

  • G. Blakiewicz
  • J. Jakusz
  • M. Kłosowski
  • W. Jendernalik
  • S. Szczepański

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Year 2020

  The design of a starter for a low-voltage, micro-power boost DC–DC converter intended for powering CMOS image sensors is presented. A unique feature of the starter is extremely low current, below 1 nA, supplying its control circuit. Therefore, a high-voltage (1.3 V) configuration of series-connected photovoltaic diodes available in a standard CMOS process or a small external LED working in photovoltaic mode can be used as an auxiliary...

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• Partially Isolated Multi-Active Bridge DC-DC Converter with Bidirectional EV Charging Ports

  Publication

  • M. Lukianov
  • E. R. Cadaval
  • G. Arena
  • R. Strzelecki

  - Year 2024

  There is a growing interest in multiport converters due to their ability to interconnect various energy sources and loads using reduced number of components. Regarding electric vehicle (EV) chargers connection, existing multiport solutions either lack scalability, featuring only one isolated charging port or the operation of ports depend on each other, complicating the converter control algorithm. This article proposes a partially...

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• Przekształtnik DC-DC 24V/12kV z transformatorem macierzowym do ładowarek kondensatorów wysokonapięciowych HVCC

  Publication

  • M. Adamowicz
  • J. Pietryka
  • Z. Krzemiński

  - Przegląd Elektrotechniczny - Year 2024

  W artykule przedstawiono projekt i wykonanie kompaktowej, przenośnej wysokonapięciowej ładowarki kondensatorów 12kV, 1kJ/s, zasilanej z baterii akumulatorów 24V. Podstawowym wyzwaniem zaprojektowania przekształtnika o tak wysokiej przekładni transformatora jest minimalizacja indukcyjności rozproszenia transformatora, która wpływa na ograniczenie mocy przenoszonej przez transformator, a tym samym uniemożliwia regulację prądu i napięcia...

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• Lagrangian model of an isolated dc-dc converter with a 3-phase medium frequency transformer accounting magnetic cross saturation

  Publication

  • P. Dworakowski
  • A. Wilk
  • M. Michna
  • A. Fouineau
  • M. Guillet

  - IEEE TRANSACTIONS ON POWER DELIVERY - Year 2021

  This article presents a nonlinear equivalent circuit model of an isolated dc-dc converter with a 3-phase medium frequency transformer. The model takes into account the magnetic cross saturation of the 3-phase core-type magnetic circuit. The model is suitable in detailed electromagnetic transient simulations of power systems involving isolated dc-dc converters. The model is developed using the Lagrange energy method. It involves...

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• Multiscalar Model Based Control Systems for AC Machines

  Publication

  • Z. Krzemiński

  - Year 2011

  Contents of the Chapter: Nonlinear transformations and feedback linearization. Models of the squirrel cage induction machine: Vector model of the squirrel cage induction machine. Multiscalar models of the squirrel cage induction machine.Feedback linearization of multiscalar models of the induction motor.Models of the double fed induction machine: Vector model of the double fed induction machine. Multiscalar model of the...

• Development of biocompatible iron oxide-silicon oxide core-shell nanoparticles as subcellular delivery platform for glucosamine-6-phosphate synthase inhibitors

  Publication

  • A. Kertmen

  - Year 2018

  In order to develop the preparation of iron oxide-silica coreshell nanoparticles (CSNPs), thesis deeply explores the cetyltrimethylammonium (CTA+) directed silica coating methods of the oleic-acid capped iron oxide nanoparticles (OA-IONPs) initialized under near-neutral pH conditions. It is demonstrated that the initial alkaline hydrolysis of ethyl acetate in the presence of CTA+ and OA-IONPs induces an unusual ligand exchange...

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• A Canonical Switched Capacitor DC-DC Converter. A look at how the historical SC synthesis problem is getting solved

  Publication

  • M. Makowski

  - Year 2014

  We reconsider a solution to the historical problem in switched capacitor (SC) DC-DC converter synthesis. Specifically, we retackle the problem of constructing an SC twophase network realizing arbitrary voltage conversion ratio within rational bounds defined. Theoretical foundations are available in our earlier research [3] where a nonconstructive proof of existence was given. We briefly review and comment on known circuit solutions...

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• Effective Permeability of Multi Air Gap Ferrite Core 3-Phase Medium Frequency Transformer in Isolated DC-DC Converters

  Publication

  • P. Dworakowski
  • A. Wilk
  • M. Michna
  • B. Lefebvre
  • F. Sixdenier
  • M. Mermet-Guyennet

  - ENERGIES - Year 2020

  The magnetizing inductance of the medium frequency transformer (MFT) impacts the performance of the isolated dc-dc power converters. The ferrite material is considered for high power transformers but it requires an assembly of type “I” cores resulting in a multi air gap structure of the magnetic core. The authors claim that the multiple air gaps are randomly distributed and that the average air gap length is unpredictable at the...

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• Switched-capacitor DC-DC converters in arbitrary switching mode - topologically derived resistive models based on incremental graph approach.

  Publication

  • M. Makowski

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2013

  In the preceding paper we reviewed some of modeling approaches aimed at systematic formulation and solution of switched capacitor DC-DC converters. In our review, special attention was paid to computationally efficient and mathematically elegant methods. In so doing we had tried to demonstrate the virtues of unified Incremental Graph (IG) approach. Incremental Graph is, in concept, a tool originally created for analysis and synthesis...

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• Development of an Advanced Control Algorithm for DAB DC/DC Converters: Inrush Current Limitation and Enhanced Operation in Transient States.

  Publication

  • S. Bachman
  • M. Turzyński

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2024

  The publication addresses the dynamic state challenges encountered during development of a dual active bridge (DAB) converter within DC microgrid systems. The conventional startup method is identified as instigating a cascade of unfavorable outcomes, encompassing elevated starting current, transformer current asymmetry, DC voltage distortions, EMI and heightened thermal stress on semiconductor components. Additionally, it necessitates...

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• Transient modeling in common DC link of power converters

  Publication

  • A. Anuchin
  • G. Demidova
  • R. Strzelecki
  • M. Yakovenko

  - Science, Technology and Arts Research Journal - Year 2020

  Предмет исследования. Представлена математическая модель силовых преобразователей электропривода, питающихся от общего звена постоянного тока, на примере тяговых электроприводов карьерного самосвала БЕЛАЗ-90 мощностью 280 кВт. Модель выполнена в пакете MATLAB/Simulink. Новизна предложенной модели заключается в применении новой топологии силовой схемы для исследования работы двух инверторов, под- ключенных к одному звену постоянного...

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• Variable Speed AC Drives with Inverter Output Filters

  Publication

  • J. Guziński
  • H. Abu-Rub
  • P. Strankowski

  - Year 2015

  The advance of variable speed drives systems (VSDs) engineering highlights the need of specific technical guidance provision by electrical machines and drives manufacturers, so that such applications can be properly designed to present advantages in terms of both energy efficiency and expenditure. This book presents problems and solutions related to inverter-fed electrical motors. Practically orientated, the book describes the...

• DC-link voltage balancing in cascaded H-Bridge converters

  Publication

  • A. Lewicki

  - Archives of Electrical Engineering - Year 2014

  In the paper a DC-link voltage balancing strategy for multilevel Cascaded H-Bridge (CHB) converter is proposed. Presented solution bases on optimal choice of active vector durations in Space-Vector Pulse Width Modulation (SV-PWM). It makes it possible to DC-link voltages control and to properly generate the output voltage vector in the case of DC-link voltage unbalance. Results of simulation and experimental researches...

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• Modeling of Common Mode Currents Induced by Motor Cable in Converter Fed AC Motor Drives

  Publication

  • J. Łuszcz

  - Year 2011

  Investigation of conducted EMI generation in AC motor fed by pulse width modulated frequency converters requires to consider parasitic capacitances in converters, motor windings and feeding cables to be taken into account. Motor voltage transients and related common mode currents are significantly correlated with resonance effects occurring in load circuits. An analysis of frequency converter load impedance-frequency characteristics...

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• Impact of DC fault blocking capability on the sizing of the DC-DC Modular Multilevel Converter

  Publication

  • J. Paez
  • F. Morel
  • S. Bacha
  • P. Dworakowski
  • D. Frey

  - Year 2020

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• Condition-Based Monitoring of DC Motors Performed with Autoencoders

  Publication

  • K. Włódarczak
  • Ł. Grzymkowski
  • T. Stefański

  - Year 2022

  This paper describes a condition-based monitoring system estimating DC motor degradation with the use of an autoencoder. Two methods of training the autoencoder are evaluated, namely backpropagation and extreme learning machines. The root mean square (RMS) error in the reconstruction of successive fragments of the measured DC motor angular-frequency signal, which is fed to the input of autoencoder, is used to determine the health...

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• Requirements for interconnection of HVDC links with DC-DC converters

  Publication

  • D. Gomez
  • J. Paez
  • M. Cheah-Mane
  • J. Maneiro
  • P. Dworakowski
  • O. Gomis-Bellmunt
  • F. Morel

  - Year 2019

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