Search results for: electrical metrology of non electrical quantities

• Stanisław Galla dr inż.

  People

  Department of Metrology and Optoelectronics

  Stanisław Galla was born in 1970 in Gdańsk. He graduated from the Secondary Technical School of Mechanical and Electrical Engineering in Gdansk (1990). He studied at the Faculty of Electrical Engineering at Gdansk University of Technology (graduated in 1996). His PhD thesis entitled "Methodology for increasing the accuracy of low frequency measurements of periodic disturbance indicators in low voltage networks" was defended in...

• Mesoscopic impedance analysis of solid materials surface

  Publication

  • K. Darowicki
  • A. Zieliński

  - ELECTROCHIMICA ACTA - Year 2010

  Several techniques have been developed in order to characterize electrical properties of surfaces in micrometer/nanometer scale. Obtaining of the spatial distribution of sample resistance, capacitance or potential requires separate measurements performed in different scanning modes. On the other hand, analysis of the frequency response of investigated system enables determination of several physical quantities in single measurement...

• Quality assessment of low voltage surge arresters

  Publication

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

  - IEEE Access - Year 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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• A review on analytical models of brushless permanent magnet machines

  Publication

  • A. Abbas
  • A. Iqbal
  • A. Lewicki
  • R. B. Prathap
  • M. Mnzool

  - INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS - Year 2024

  This study provides an in-depth investigation of the use of analytical and numerical methods in analyzing electrical machines. Although numerical models such as the finite-element method (FEM) can handle complex geometries and saturation effects, they have significant computational burdens, are time-consuming, and are inflexible when it comes to changing machine geometries or input values. Analytical models based on magnetic equivalent...

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• Angle Tracking Observer for Filtering Rotor Position Estimates in Sensorless Electric Drives

  Publication

  • L. Jarzębowicz
  • M. Cisek
  • A. Opaliński

  - Elektronika Ir Elektrotechnika - Year 2016

  Sensorless electric drives use measurements of electrical quantities to estimate rotor position and speed. Measurement errors deteriorate the estimation accuracy, thus additional means are necessary to remove high-frequency components from estimated signals. This paper proposes to use an Angle Tracking Observer (ATO) for reducing noise in rotor position estimates, which is related to random errors in the measurements. A simplified,...

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• Janusz Nieznański prof. dr hab. inż.

  People

  Zakład Przekształtników i Magazynowania Energii

  Janusz Nieznański born in 1957 in Gdańsk. He received the M.Sc. degree in 1981, the Ph.D. degree in 1990, and the D.Sc. (‘habilitation’) degree in 1999, all from the Gdańsk University of Technology. Since 1981 he has been with the above university, where he is currently Professor of Electrical Engineering. His research and teaching interests include control, diagnostics, modeling and simulation of power electronic converters and...

• Fiber-optic sensors based on microspheres with nanocoatings (Zastosowanie mikrosfer optycznych z cienkowarstwowymi pokryciami w czujnikach światłowodowych)

  Publication

  • P. Listewnik

  - Year 2021

  Temperature is one of the most important physical quantities. Temperature measurements are used in every field of life, especially electronics, electrical engineering, energy-related fields, including energy source and storage devices. The goal of this dissertation is to design and optimize the microsphere-based fiber-optic sensors construction for measurement of the sensor surrounding medium temperature, including selection of...

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• TIME- AND FREQUENCY-DOMAIN QUASI-2D SMALL-SIGNAL MOSFET MODELS

  Publication

  • W. Kordalski
  • T. Stefański
  • D. Trofimowicz

  - Year 2019

  A novel approach to small-signal MOSFET modeling is presented in this book. As a result, time- and frequency-domain physics-based quasi-2D NQS four-terminal small-signal MOSFET models are proposed. The time-domain model provides the background to a novel DIBL-included quasi‑2D NQS four-terminal frequency-domain small-signal MOSFET model. Parameters and electrical quantities of the frequency-domain model are described by explicit...

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• Michał Michna dr hab. inż.

  People

  Department of Power Electronics and Electrical Machines

  Michal Michna received the M.Sc. and Ph.D. degrees in electrical engineering from the Gdansk University of Technology (GUT), Gdansk, Poland, in 1998 and 2005, respectively. Since 2004, he was employed at the Department of Power Electronics and Electrical Machines of the Gdańsk University of Technology (assistant, assistant professor, senior lecturer). In 2010-2015 he was a deputy of head of the Department of Power Electronics and...

• Archives of Electrical Engineering

  Journals

  ISSN: 1427-4221 , eISSN: 2300-2506