Search results for: AC LOSS

• 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.

• Lingua ac Communitas

  Journals

  ISSN: 1230-3143

• 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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• 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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• Illness Crisis and Loss

  Journals

  ISSN: 1054-1373

• JOURNAL OF LOSS & TRAUMA

  Journals

  ISSN: 1532-5024 , eISSN: 1532-5032

• Analiza i badania transformatora hybrydowego z przekształtnikiem AC/DC/AC współdziałającym z przełącznikiem zaczepów

  Publication

  • W. Matelski

  - Year 2023

  Rozprawa dotyczy badań nad układem transformatora hybrydowego, który oprócz możliwości regulacji ciągłej napięcia za pomocą przekształtnika energoelektronicznego, posiada układ regulacji skokowej w postaci przełącznika zaczepów. Badane urządzenie przeznaczone jest do stabilizacji napięcia w dystrybucyjnej sieci niskiego napięcia. Dzięki skoordynowanej pracy układów (ciągłego i skokowego) uzyskana zostaje tzw. Wielostrefowa Regulacja...

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• Hypertension and cochlear hearing loss

  Publication

  • T. Przewoźny
  • A. Gójska-Grymajło
  • M. Kwarciany
  • D. Gąsecki
  • K. Narkiewicz

  - BLOOD PRESSURE - Year 2015

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• Hybrid stepless distribution transformer with four-quadrant AC/DC/AC converter at low voltage side - simulation tests

  Publication

  • R. Strzelecki
  • W. Matelski
  • V. Tomasov

  - Przegląd Elektrotechniczny - Year 2018

  The article presents the work of the stepless hybrid distribution transformer (HT), as an alternative to the so far applied Automatic Voltage Regulator (AVR) solutions, used to control the voltage in the power system in terms of the fundamental harmonic. The HT is a combination of a conventional distribution transformer and an AC/DC/AC converter connected in series with the transformers secondary winding. In the work the basic...

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• Loss Minimization-Based Sensorless Control of High-Speed Induction Motor Considering Core Loss

  Publication

  • T. Ayana
  • P. Kołodziejek
  • M. Morawiec
  • L. Wogi

  - IEEE Access - Year 2024

  This paper presents loss-minimizing sensorless control (LMC) strategies utilized to optimize the energy of high-speed induction motor (HSIM) drives. A machine’s ability to operate effectively depends on the estimation of its electrical losses. Although copper losses account for the majority of electrical losses in electrical machines, core loss also contributes a major part, particularly in high-speed induction motors. A review...

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