Search results for: multiphase machine

• Feedback Control of Multiphase Induction Machines with Backstepping Technique

  Publication

  • M. Morawiec
  • P. Strankowski
  • A. Lewicki
  • J. Guziński
  • F. Wilczyński

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2020

  The paper presents the control possibility of five phase induction machines. In the proposed solution the machine model vector form is not transformed to the (dq)-coordinate system, that is connected to rotor flux vector, but utilizes the stationary system ( αβ ). Moreover, the nonlinear model linearization is based on demonstrated nonlinear variables transformation for i-orthogonal ( αβ )(n) planes. By introducing the backstepping...

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• Residence time distribution in rapid multiphase reactors

  Publication

  • P. Wojewódka
  • R. Aranowski
  • C. Jungnickel

  - JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY - Year 2019

  Residence time distribution (RTD) provides information about average hydraulic residence time and the distribution of material in the reactor. A method for determining RTD for reactors with very short hydraulic residence times is deconvolution based on extraction of real RTD by the analysis of a non-ideal input signal. The mean residence time and dispersion were determined for the spinning fluids reactor (SFR). For the first time...

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• Machines

  Journals

  ISSN: 2075-1702

• Multiphase Science and Technology

  Journals

  ISSN: 0276-1459

• Multiphase separated polyurethanes studied by micro Raman spectroscopy.

  Publication

  • H. Janik
  • B. Pałys
  • Z. S. Petrovic

  - MACROMOLECULAR RAPID COMMUNICATIONS - Year 2003

  Przedmiotem badań były poliuretany o zawartości 30% segmentów sztywnych,charakteryzujące się obecnością globul i sferolitów. Badania za pomocą mikro Ramana wykazały różny skład chemiczny w wymienionych mikroobszarach. W globulach stwierdzono zanik obecności segmentów giętkich lub ich bardzo znikomą ilość w porównaniu z matrycą i sferolitami.

• Quantum issues in diagnostics of marine energy machines and devices

  Publication

  • J. Girtler

  - Zeszyty Naukowe Akademii Morskiej w Szczecinie - Year 2012

  W artykule podjęto zagadnienie możliwości uwzględniania części dorobku mechaniki kwantowej w diagnostyce okrętowych urządzeń energetycznych. Wykazano, że są zbieżne spostrzeżenia mechaniki kwantoweji diagnostyki technicznej uzyskane w obszarze wiedzy z zakresu badań empirycznych. Uzasadniono konieczność wykonywania podczas badań empirycznych, nie tylko rachunku błędów, lecz także określania niedokładności wyników badań (pomiarów)...

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• Journal of Machine Construction and Maintenance

  Journals

  ISSN: 1232-9312 , eISSN: 2300-1186

• Development and performance analysis of a novel multiphase doubly-fed induction generator

  Publication

  • R. Ryndzionek
  • K. Blecharz
  • F. Kutt
  • M. Michna
  • G. A. Kostro

  - Archives of Electrical Engineering - Year 2022

  This paper presents the research into the design and performance analysis of a novel five-phase doubly-fed induction generator (DFIG). The designed DFIG is developed based on standard induction motor components and equipped with a five-phase rotor winding supplied from the five-phase inverter. This approach allows the machine to be both efficient and reliable due to the ability of the five-phase rotor winding to operate during...

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• Presence and distribution of antibiotic-resistant bacteria in multiphase activated sludge system

  Publication

  • A. Łuczkiewicz
  • K. Jankowska
  • K. Olańczuk-Neyman

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Year 2007

  In total 237 isolates of coliforms (113 strains) and enterococci (124 stains) from influent, mixed liquor in bioreactor and effluent of wastewater treatment plant (WWTP), were isolated on selective media and examined for antibiotic resistance. From 50 to 80% of the coliform strains isolated from the raw and treated sewage were resistant against ceftazidime CAZ, cefuroxim CXM, cefalotin KF and against amoxicillin AML, and only below...

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• Hybridized PWM Strategy for Three- and Multiphase Three-Level NPC Inverters

  Publication

  • A. Lewicki
  • D. Kondratenko
  • C. Odeh

  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS - Year 2024

  A simple hybridized pulsewidth modulation (PWM) algorithm for three- and multiphase three-level neutral point clamped (NPC) inverters is proposed. The proposed solution is based on classical space vector PWM (SVPWM) algorithms for two-level inverters but can also be based on sinusoidal PWM with min–max injection. An additional level of output voltage is obtained by modifying the resulting switching patterns taking into account...

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