Search results for: PD-PWM

• 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...

• Application of Barycentric Coordinates in Space Vector PWM Computations

  Publication

  • P. Szczepankowski
  • J. Nieznański

  - IEEE Access - Year 2019

  This paper proposes the use of barycentric coordinates in the development and implementationof space-vector pulse-width modulation (SVPWM) methods, especially for inverters with deformed space-vector diagrams. The proposed approach is capable of explicit calculation of vector duty cycles, independentof whether they assume ideal positions or are displaced due to the DC-link voltage imbalance. The use ofbarycentric coordinates also...

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• Algorytm PWM dla 9-fazowego silnika indukcjnego

  Publication

  • P. Stec

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2012

• The effect of microemulsion composition on the morphology of Pd nanoparticles deposited at the surface of TiO2 and photoactivity of Pd-TiO2

  Publication

  • M. Długokęcka
  • J. Łuczak
  • Ż. Polkowska
  • A. Zaleska-Medynska

  - APPLIED SURFACE SCIENCE - Year 2017

  A series of microemulsion (ME) system, constituted by different water to surfactant molar ratios (Wo) and oil to surfactant mass ratios (S), have been applied for Pd-TiO2 preparation. The effect of ME properties on the morphology of Pd nanoparticles formed at TiO2 surface and an effect of Pd size and distribution on the surface and photocatalytic properties of Pd-TiO2 were investigated. Microemulsion systems were characterized...

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• Superconductivity and ferromagnetism in Pd doped Y9Co7

  Publication

  • J. Strychalska-Nowak
  • J. D. Thompson
  • R. J. Cava
  • T. Klimczuk

  - INTERMETALLICS - Year 2016

  The ferromagnetic superconductor Y9Co7 was chemically doped to yield the solid solution Y9Co7-xPdx for 0 < x < 0.4. The lattice parameter a does not depend on x, whereas c increases with increasing Pd content up to x ¼ 0.2, the palladium solubility limit. The transition from ferromagnetism (TC ¼ 4.25 K) to superconductivity (Tsc ¼ 2.4 K) was observed only for the parent Y9Co7 compound. For the lowest tested Pd doping level (x ¼...

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• Selective Harmonic Elimination PWM For a Cascaded Multi-level Inverter

  Publication

  • A. L. Kouzou
  • A. Krama
  • S. S. Refaat
  • H. Abu-Rub

  - Year 2020

  This paper deals with the selective harmonic elimination pulse width modulation (SHE-PWM) technique. This technique is used for the elimination of selected dominant low order harmonics in the multi-level inverter output voltage. The presence of these harmonics is the essential drawback of such kind of inverters; especially when it is used for the control of different AC drivers. The SHE-PWM is based...

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• 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...

• Advanced current regulated PWM inverter with simplified load model.

  Publication

  • H. Abu-Rub
  • J. Guziński
  • Z. Krzemiński

  - Year 2004

  W artykule przedstawionio nowy regulator prądu stojana silnika asynchronicznego zasilanego z falownika napięcia. Regulator wykorzystuje obliczenia siły elektromotorycznej silnika. Rozważonio wpływ zmian parametrów silnika na działanie regulatora. Wykorzystano uproszczony model silnika bez uwzględnienienia rezystancji stojana. Zastosowano stałą częstotliwość próbkowania prądu. Układ zrealizowania w programie symulacyjnym oraz na...

• Materiały i Technologie : roczniki naukowe Pomorskiego Oddziału PTM

  Journals

  ISSN: 1731-223X

• A Comparison of Hydrogen Storage in Pt, Pd and Pt/Pd Alloys Loaded Disordered Mesoporous Hollow Carbon Spheres

  Publication

  • M. Baca
  • K. Cendrowski
  • W. Kukulka
  • G. Bazarko
  • D. Moszyński
  • B. Michalkiewicz
  • R. Kalenczuk
  • B. Zielinska

  - Nanomaterials - Year 2018

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