Search results for: she-pwm

• Preparation and Characterization of an Electrospun PLA-Cyclodextrins Composite for Simultaneous High-Efficiency PM and VOC Removal

  Publication

  • S. Palmieri
  • M. Pierpaoli
  • L. Riderelli
  • S. Qi
  • M. Ruello

  - Journal of Composites Science - Year 2020

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• Application of the Harmonic Balance Method for Spatial Harmonic Interactions Analysis in Axial Flux PM Generators

  Publication

  • N. Radwan-Pragłowska
  • T. Węgiel
  • D. Borkowski
  • T. Wegiel

  - ENERGIES - Year 2021

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• Pomiary akustyczne i symulacja komputerowa wnętrza kościoła pw. Marii Magdaleny we Lwowie

  Publication

  • T. Kamiński
  • R. Kinasz
  • J. Rubacha
  • A. Kulowski

  - Fizyka Budowli w Teorii i Praktyce - Year 2010

  Omówiono akustyczne aspekty wykorzystania kościoła do celów koncertowych. Przedstawiono wyniki pomiarów akustycznych oraz koncepcję poprawy jego walorów akustycznych jako sali koncertowej z wykorzystaniem doraźnie wstawianych elementów rozpraszających dźwięk i poprawiających wzajemne słyszenie się wykonawców.

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• Pogłosowości wnętrza sakralnego na przykładzie kościoła pw. Niepokalanego Serca Maryji w Gdyni

  Publication

  • D. Wróblewska

  - Year 2005

  Walory słuchowe stanowią obok walorów wizualnych istotny element w postrzeganiu przestrzeni sakralnej. Dlatego dobrze zaprojektowana akustyka wnętrza (lub chociażby uniknięcie podstawowych błędów akustycznych) jest na równi ważna z projektem architektonicznym. Zasadniczym kryterium w ocenie własności akustycznych wnętrz jest jego pogłosowość. W niniejszym referacie przedstawiono analizę i ocenę pogłosowośći wnętrza kościoła przeprowadzoną...

• ZAKRES STOSOWANIA DECYZJI TSI PRM (Decyzja Komisji WE nr 2008/164/WE z dnia 21 grudnia 2007r.)W PROJEKTOWANIU POLSKICH DWORCÓW

  Publication

  • D. Załuski

  - Year 2014

  Modernizacja każdego dworca musi być realizowana zgodnie z polskimi przepisami budowlanymi, a dodatkowo powinna być zgodna z przepisami Decyzji TSI PRM, o ile te zostały wprowadzone do polskiego prawa, a nie są sprzeczne z polskimi przepisami budowlanymi lub są przepisem szczególnym tych przepisów. Do dziś w Rozporządzeniu Ministra Infrastruktury z dn. 12.04.2002r. w sprawie warunków technicznych, jakim powinny odpowiadać budynki...

• Izabela Mironowicz dr hab. inż. arch.

  People

  Department of Urban Design and Regional Planning

• Comparison of luminescence (TL and OSL) dating results from selected loess profiles in SE Poland and the NW Ukraine

  Publication

  • S. Fedorowicz
  • M. Łańczot
  • A. Muc

  - Year 2005

  Five periglacial loess profiles, three from Poland and two from the Ukraine, were selected from dating luminescence methods (TL and OSL). In regional terms, they include loess of the Carpathin, peri-Carpathian and Podalia facies. 89 samples were collected for dating purposes from five profiles. Of these samples, 19 were OSL-dated. The function of TL and OSL date distribution for the same samples was presented on one chart. The...

• De la façon dont les réseaux sociaux se croisent dans la vie des migrants

  Publication

  • D. Duenas Cid

  - Year 2022

  Éste es un texto muy complicado de titular. A pesar de lo sugerente de la idea de escribir acerca de dos conceptos intensamente relacionados, como son el de migración y el de redes. Esta misma intensidad en su interrelación implica una multiplicidad de sentidos que complican el trabajo explicativo del científico social, por su cuantioso número de opciones, y el trabajo comprensivo del lector, por la posible confusión que esta situación...

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• Results of research on the SME sector in the context of applying tax reliefs

  Open Research Data

  open access

  • P. Kasprzak

  This dataset presents the quantitative results of the survey conducted in the period June 2019 - April 2020. In total, 274 completed survey questionnaires were obtained.

• Structure of the SME sector by economy sectors in Poland and the EU-28

  Open Research Data

  open access

  • P. Kasprzak

  Eurostat data show that almost 75% of SMEs in Poland are trade and services, and every seventh enterprise conducts activities related to construction, and every eight - in industry. Comparing the industry structure of Polish companies with the structure of enterprises operating in EU countries, it should be noted that we are characterized by a greater...

• Beata Krawczyk dr hab.

  People

  Katedra Biotechnologii i Mikrobiologii

  Beata Krawczyk, PhD, Professor Academic degrees, education, qualifications:  B. Krawczyk earned his master degree in Biology at the University of Gdansk, Biology Faculty, in 1986, and her PhD in Molecular Biology at the University of Gdansk, Biology Faculty, in 1996.  Postdoctoral degree (habilitation) in biological sciences in the discipline biology, Faculty of Natural Sciences, University of Szczecin, Szczecin, in 2009. In 2012...

• A Direct Modulation for Matrix Converters based on the Onecycle Atomic operation developed in Verilog HDL.

  Publication

  • P. Szczepankowski
  • W. Śleszyński
  • T. Bajdecki

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2022

  This paper presents a fast direct Pulse Width Modulation (PWM) algorithm for the Conventional Matrix Converters (CMC) developed in Verilog Hardware Description language (HDL). All PWM duty cycle calculations are performed in one cycle by an atomic operation designed as a digital module using FPGA basic blocks. The algorithm can be extended to any number of output phase. The improved version of the discontinuous Direct Analytic...

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• BAZYLIKA pw. ŚW. MIKOŁAJA W GDAŃSKU. PRZYKŁAD MONITORINGU I DIAGNOSTYKI ZABYTKOWYCH OBIEKTÓW KUBATUROWYCH

  Publication

  • M. Niedostatkiewicz
  • T. Majewski

  - Year 2023

  W artykule opisano przypadek monitorowania stanu technicznego zabytkowego budynku sakralnego po wystąpieniu awarii oraz w trakcie prowadzenia prac remontowych. W celu monitorowania stanu budynku, bezpiecznego prowadzenia prac diagnostycznych, rozpoznania przyczyn awarii oraz bezpiecznego prowadzenia prac remontowych opracowano szczegółowy Program monitorowania obiektu, który został wdrożony do realizacji, funkcjonuje i stanowi...

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• Influence of preprocessing techniques on pulse pressure velocity determination

  Publication

  • A. Poliński
  • A. Bujnowski
  • T. Kocejko
  • J. Wtorek

  - Year 2021

  Pulse Wave Velocity (PWV) is measured and utilized in many clinical applications. Recently, a wide research has been led to develop a cuff-less and continuous blood pressure method basing on PWV. However, in this application a decision on choosing an appropriate fiducial point of pulse wave (PW) waveform is necessary and substantial. It would allow to measure time parameters necessary to determine PWV. An influence of sampling...

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• Nihon Ringakkai Shi/Journal of the Japanese Forestry Society

  Journals

  ISSN: 0021-485X

• SAE International Journal of Vehicle Dynamics Stability and NVH

  Journals

  ISSN: 2380-2170

• Yosetsu Gakkai Shi/Journal of the Japan Welding Society

  Journals

  ISSN: 0021-4787

• SAE International Journal of Passenger Cars-Mechanical Systems

  Journals

  ISSN: 1946-3995 , eISSN: 1946-4002

• Rendiconti di Matematica e delle Sue Applicazioni

  Journals

  ISSN: 1120-7183

• Output voltage, current and DC-link voltages under SPWM, experimental results

  Open Research Data

  open access

  • D. Kondratenko
  • A. Lewicki

  The dataset contains the experimental results of the project: A universal algorithm of space vector pulse width modulation for three-level three and multi-phase NPC inverters with DC-link voltage balancing. The output line-to-line voltage, output current and DC-link voltages were included. The Carrier-Based Pulse-Width Modulation (CBPWM) technique was...

• Data from pizoelectric pressure sensor placed inside PWK pump chamber

  Open Research Data

  open access

  • P. Patrosz
  • L. Osiecki

  The dataset contains raw data acquired from a piezoelectric pressure sensor placed inside PWK pump chamber. Pumping pressure was 10MPa, displacement was set to 100%, oil temperature was 33C.  Columns "Czas" stand for a time in seconds and milliseconds, "Napięcie" stands for Voltage in Volts 

• Angelika Duszyńska dr inż.

  People

  Department of Geotechnical and Hydraulic Engineering

   Absolwentka kierunku Budownictwo Wodne Wydziału Hydrotechniki Politechniki Gdańskiej, doktor nauk technicznych w dziedzinie Geotechnika,  nauczyciel akademicki (od 2020 roku pracuje na stanowisku profesora uczelni na wydziale Inżynierii Lądowej i Środowiska PG).  Prowadzi zajęcia z przedmiotów: Geoinżynieria, Geotechnika, Budowle Ziemne i Wzmacnianie podłoża, Geosyntetyki w Budownictwie, Budowle Hydrotechniczne. Od ponad 20 lat...

• He Jishu/Nuclear Techniques

  Journals

  ISSN: 0253-3219

• New interesting localities of Cladopodiella fluitans and Geocalyx graveolens (Marchantiophyta, Jungermanniales) in SE Poland against the background of their distribution in the country

  Publication

  • R. Zubel

  - ANNALES UNIVERSITATIS MARIAE CURIE-SKLODOWSKA. SECTIO C: BIOLOGIA - Year 2009

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• Dwukierunkowy przekształtnik 4L-DC z aktywną regulacją napięć w obwodzie pośredniczącym

  Publication

  • P. Szczepankowski
  • R. Strzelecki
  • M. Parchomiuk
  • M. Grabarek

  - Przegląd Elektrotechniczny - Year 2012

  W artykule opisano model laboratoryjny i wyniki badań dwukierunkowego symetrycznego (ang. Back-to-Back) przekształtnika 4L-DC (ang. Four Level Diode Clamped) z dwukierunkowym dwustopniowym przetwarzaniem energii (połączenie typu ang. Back-To-Back). W celu równoważenia i regulacji napięć kondensatorów w obwodzie pośredniczącym układu zastosowano dwa trójpoziomowe przerywacze DC-DC sterowane synchronicznie metodą modulacji PO-PWM...

• Estimation of interior-permanent-magnet-synchronous-motor rotor position by analysis of phase-current derivatives

  Publication

  • L. Jarzębowicz
  • K. Karwowski

  - ELECTROMOTION - Year 2010

  This paper describes an algorithm for estimation of IPMSM rotor angular position. The algorithm uses derivatives of motor phase currents resulting from PWM modulation to obtain the rotor position. The presented method is designed for medium- and high-speed range, since it is based on determination of the EMF vector. Calculation of the motor position is performed in every PWM cycle. The standard SV-PWM method is used to determine...

• An Extended Control of the Input Angle for Matrix Converters Connected with the Non-Unity Power Factor Loads.

  Publication

  • P. Szczepankowski

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2022

  This paper proposes a novel PWM modulation algorithm for Multiphase Conventional Matrix Converters (MCMC), with 3 inputs and k outputs, using the transfer function of the load angle. The proposed approach extends the range of power angle control at the input during the operation with a maximum voltage transfer ratio. The proposed concept is based on the Direct Analytic Voltage PWM (DAV--PWM) modulation with an elliptical trajectory...

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• Opinia techniczna dotycząca stanu zachowania reliktów archeologicznych dawnego kościoła pw. św. Katarzyny w Bytowie

  Publication

  • A. Piwek
  • A. Kapuściński

  - Year 2013

  Analiza dotychczasowego stanu ekspozycji fundamentów dawnego kościoła w Bytowie wykazała znaczne zniszczenia murów ceglanych. Ustalono przyczyny powstania uszkodzeń i przedstawiono propozycje prac kkonserwatorskich.

• Optimization of biocorrosion resistance and mechanical properties of PM Ti–XAl–2Fe–3Cu alloys by response surface methodology

  Publication

  • M. Najafizadeh
  • M. Ghasempour-Mouziraji
  • M. Hosseinzadeh
  • S. Yazdi
  • A. Sarrafan
  • M. Bozorg
  • P. Cavaliere
  • A. Mirowska
  • M. Szkodo

  - JOURNAL OF MATERIALS SCIENCE - Year 2022

  In the current study, the biocorrosion resistance and mechanical properties of the Ti–XAl–2Fe–3Cu (wt%) (X = 6, 4, 2 wt%) alloy produced by powder compact extrusion of blended elemental powders were optimized by using the response surface methodology in order to gain the best combination of processing parameters. To run the optimization process, central composite design with three equal levels of oxygen, hydrogen and aluminum was...

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• Conducted emi identification in power electronic converters : modeling of EMI generation and propagation using circuit simulation and wiener filtering methods.

  Publication

  • P. Musznicki

  - Year 2009

  This work presents the circuit simulations and the conventional signal processing technique (Wiener filtering) in order to reconstruct conducted ElectroMagnetic Interferences (EMI), generated and propagated in power electronics converters. In the simulation study, the most accurate presently available models of components of circuit have been used and improved. The proposed Wiener filtering method allows to identifying the transfer...

• Rotational state-changing collisions of C2H− and C2N− anions with He under interstellar and cold ion trap conditions: A computational comparison

  Publication

  • J. Franz
  • B. P. Mant
  • L. González-Sánchez
  • R. Wester
  • F. A. Gianturco

  - JOURNAL OF CHEMICAL PHYSICS - Year 2020

  We present an extensive range of quantum calculations for the state-changing rotational dynamics involving two simple molecular anions that are expected to play some role in the evolutionary analysis of chemical networks in the interstellar environments, C2H− (X1Σ+) and C2N− (X3Σ−), but for which inelastic rates are only known for C2H−. The same systems are also of direct interest in modeling selective photo-detachment experiments...

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• IPMSM rotor position estimator based on analysis of phase current derivatives

  Publication

  • L. Jarzębowicz

  - Year 2009

  This paper describes an algorithm for estimation of IPMSM angular rotor position. The algorithm uses derivatives of motor phase currents resulting from PWM modulation to obtain the rotor position. The presented method is designed for medium- and high-speed range, since it is based on determination of the EMF vector. Algorithm is characterised by a very simple formulae. The calculation of rotor position is performed in every PWM...

• Derivation of motor mean phase currents in PMSM drives operating with low switching-to-fundamental frequency ratio

  Publication

  • L. Jarzębowicz

  - Power Electronics and Drives - Year 2019

  Pulse width modulation (PWM) of inverter output voltage causes the waveforms of motor phase cur-rents to consist of distinctive ripples. In order to provide suitable feedback for the motor current con-trollers, the mean value must be extracted from the currents’ waveforms in every PWM cycle. A com-mon solution to derive the mean phase currents is to sample their value at the midpoint of a symmetrical PWM cycle. Using an assumption...

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• Te Zhong Zhu Zao Ji You Se He Jin/Journal of Special Casting & Nonferrous Alloys

  Journals

  ISSN: 1001-2249

• Experimental investigation of free convection of glycol-Al2O3 nanofluid from horizontal tube

  Publication

  • J. Cieśliński
  • S. Smoleń
  • D. Sawicka

  - Year 2016

  Nanofluids came to be seen as a new generation of coolants, both in single- and two phase systems. Furthermore, nanofluids or nanocomposites may be used as a media in a thermal energy storage (TES) in such systems as sensible heat storage (SHS) and phase change materials (PCM). In the SHS systems the dominating mechanism of the heat transfer is natural convection. However, in the literature only a few investigations of free convection...

• EXPERIMENTAL INVESTIGATION OF FREE CONVECTION OF GLYCOL-Al2O3 NANOFLUID FROM HORIZONTAL TUBE

  Publication

  • J. Cieśliński
  • S. Smoleń
  • D. Sawicka

  - Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika - Year 2016

  Nanofluids came to be seen as a new generation of coolants, both in single- and two phase systems. Furthermore, nanofluids or nanocomposites may be used as a media in a thermal energy storage (TES) in such systems as sensible heat storage (SHS) and phase change materials (PCM). In the SHS systems the dominating mechanism of the heat transfer is natural convection. However, in the literature only a few investigations of free convection...

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• Paweł Śliwiński dr hab. inż.

  People

  Institute of Mechanics and Machine Design

  Diplomas and academic degrees. Training 2017:   degree of habilitated doctor;2006:   PhD in Technical Sciences. PhD thesis defended with distinction. Gdansk University of Technology, Faculty of Mechanical Engineering.2000:   Master of Science. Graduated from the university with distinction. Gdansk University of Technology, Faculty of Mechanical Engineering.1995:   Mechanical technician. Graduated from a Technical Secondary School...

• Konserwacja kościoła pw. św. Jana Apostoła i Ewangelisty na Harendzie w ujęciu koncepcji „żywego dziedzictwa“

  Publication

  • K. Banasik-Petri
  • E. Tymcik
  • M. Petri

  - TEKA KOMISJI ARCHITEKTURY, URBANISTYKI I STUDIÓW KRAJOBRAZOWYCH PAN - Year 2021

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• Ekspertyza techniczna dotycząca zawalenia się ścian zabytkowej wieży kościoła pw. Podwyższenia Krzyża Świętego w Otyniu

  Publication

  • A. Kapuściński

  - Year 2013

  Dokonano analizy powstania awarii konstrukcji wieży kościoła. Ustalono ich przyczynę.

• Ekspertyza techniczna dotycząca zawalenia się ścian zabytkowej wieży kościoła pw. Podwyższenia Krzyża Świętego w Otyniu

  Publication

  • A. Kapuściński

  - Year 2012

  Ekspertyza dot. określenia przyczyn zawalenia się wieży zabytkowego kościoła w Otyniu, w sierpniu 2012 r.

• Sundials of St Mary’s Church in Gdańsk / Zegary słoneczne kościoła pw. Wniebowzięcia Najświętszej Panny Marii w Gdańsku

  Publication

  • T. Jażdżewski
  • A. Piwek

  - Architectus - Year 2018

  The paper presents contemporary research evidence of form, function and history of the sundials of St Mary’s Church in Gdańsk. The discussed sundials are located on the southern wall of the church transept. The sundial, which is believed to be made by Lorenzo Zachau in 1533, is placed on the west side of the western window, at the edge of the wall. The face of this sundial is separated by a horizontal line into two parts. The upper...

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• Enterprises of the SME sector in selected years in Poland - entities registered in the REGON system

  Open Research Data

  open access

  • P. Kasprzak

  The free market economy in Poland, initiated at the turn of the 1980s and 1990s, contributed to a significant increase in the number of private enterprises. During the years of the Polish People's Republic, the number of companies was small, but at the beginning of the 1990s it began to grow rapidly. The following data contains information about number...

• Error analysis of calculating average d-q current components using Regular Sampling and Park transformation in FOC drives

  Publication

  • L. Jarzębowicz

  - Year 2014

  In electric drives using voltage source inverters, motor currents contain ripple component resulting from pulse-width modulated (PWM) voltage. The frequency range of the ripples is much higher than the bandwidth of current control. Therefore the control is performed on the basis of a fundamental current component, i.e. average value with the averaging time being the PWM period. In majority of cases the average current is measured...

• 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....

  Full text to download in external service

• Isobutyl acetate: electronic state spectroscopy by high-resolution vacuum ultraviolet photoabsorption, He(I) photoelectron spectroscopy and ab initio calculations

  Publication

  • M. Śmiałek-Telega
  • M. Łabuda
  • M. Hubin-Franskin
  • J. Delwiche
  • S. Hoffmann
  • N. C. Jones
  • N. J. Mason
  • P. Limão-Vieira

  - EUROPEAN PHYSICAL JOURNAL D - Year 2017

  The high-resolution vacuum ultraviolet photoabsorption spectrum of isobutyl acetate, C6H12O2, is presented here and was measured over the energy range 4.3–10.8 eV (290–115 nm). Valence and Rydberg transitions with their associated vibronic series have been observed in the photoabsorption spectrum and are assigned in accordance with new ab initio calculations of the vertical excitation energies and oscillator strengths. The measured...

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• Electronic state spectroscopy by high-resolution vacuum ultraviolet photoabsorption, He(I) photoelectron spectroscopy and ab initio calculations of ethyl acetate

  Publication

  • M. Śmiałek-Telega
  • M. Łabuda
  • J. Guthmuller
  • M. Hubin-Franskin
  • J. Delwiche
  • S. Hoffmann
  • N. C. Jones
  • N. J. Mason
  • P. Limao-Vieira

  - EUROPEAN PHYSICAL JOURNAL D - Year 2016

  The high-resolution vacuum ultraviolet photoabsorption spectrum of ethyl acetate, C4H8O2, is presented over the energy range 4.5−10.7 eV (275.5−116.0 nm). Valence and Rydberg transitions and their associated vibronic series observed in the photoabsorption spectrum, have been assigned in accordance with new ab initio calculations of the vertical excitation energies and oscillator strengths. Also, the photoabsorption cross sections...

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• SBE Scutellariae baicalensis radix as a new strategies for local treatment of vaginal infection

  Projects

  Project manager: dr n. farm. Justyna Chanaj-Kaczmarek

  Project realized in Poznan University of Medical Sciences according to 2020/04/X/NZ7/01515 agreement from 2020-12-12

• SAE International Journal of Passenger Cars-Electronic and Electrical Systems

  Journals

  ISSN: 1946-4614 , eISSN: 1946-4622

• Zhonghua yi shi za zhi (Beijing, China : 1980)

  Journals

  ISSN: 0255-7053