Wyniki wyszukiwania dla: high-speed drives

• Errors of a Linear Current Approximation in High-Speed PMSM Drives

  Publikacja

  • L. Jarzębowicz

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Rok 2017

  Current sampling techniques and predictive algorithms used in the digital control of electric drives rely on a simple mathematical model that assumes linear current changes upon constant supplying voltages. This paper identifies rotor movement as a factor that makes this assumption invalid when the rotor covers an angular distance of a few tens of degrees during the control interval duration. The errors of the linear current approximation...

  Pełny tekst do pobrania w portalu

• JOURNAL OF HIGH SPEED NETWORKS

  Czasopisma

  ISSN: 0926-6801 , eISSN: 1875-8940

• Modeling the impact of rotor movement on non-linearity of motor currents waveforms in high-speed PMSM drives

  Publikacja

  • L. Jarzębowicz
  • S. Mirchevski

  - Rok 2017

  Motor current measurement techniques as well as predictive control algorithms for electric drives rely on an assumption of linear motor currents changes resulting from constant inverter output voltages. Recent research has reported that this assumption does not hold in motors with short electrical time constant, and in drives whose rotor position advances substantially during a control period. This paper proposes a simulation model...

  Pełny tekst do pobrania w portalu

• Variable Speed AC Drives with Inverter Output Filters

  Publikacja

  • J. Guziński
  • H. Abu-Rub
  • P. Strankowski

  - Rok 2015

  The advance of variable speed drives systems (VSDs) engineering highlights the need of specific technical guidance provision by electrical machines and drives manufacturers, so that such applications can be properly designed to present advantages in terms of both energy efficiency and expenditure. This book presents problems and solutions related to inverter-fed electrical motors. Practically orientated, the book describes the...

• Electric shock hazard in circuits with variable-speed drives

  Publikacja

  • S. Czapp
  • J. Guziński

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2018

  The conventional approach to electrical safety under fault condition in typical power systems considers earth fault currents of sinusoidal waveform and frequency of 50/60 Hz. However, in circuits with variable-speed drives, there is earth fault current flow with harmonics, and these harmonics influence the threshold of ventricular fibrillation. The paper presents earth fault current waveforms in circuits with variable-speed drives...

  Pełny tekst do pobrania w portalu

• Modeling the impact of discretizing rotor angular position on computation of field-oriented current components in high speed electric drives

  Publikacja

  • L. Jarzębowicz

  - APPLIED MATHEMATICAL MODELLING - Rok 2017

  Modern drives consist of alternating current electric motors, and the field-oriented control (FOC) of such motors enables fast, precise, and robust regulation of a drive's mechanical variables such as torque, speed, and position. The control algorithm, implemented in a microprocessor, requires feedback from motor currents, and the quality of this feedback is essential to a drive's control properties. Motor phase currents are sampled...

  Pełny tekst do pobrania w portalu

• International Journal of High Speed Electronics and Systems

  Czasopisma

  ISSN: 0129-1564

• Immunity of residual current devices to the impulse leakage current in circuits with variable speed drives

  Publikacja

  • S. Czapp
  • K. Borowski

  - Elektronika Ir Elektrotechnika - Rok 2013

  This paper concerns reliability of supply in variable speed drive circuits with residual current devices. During normal operation of these circuits high value of leakage current causes unwanted tripping of residual current devices. Immunity of residual current devices to the impulse leakage current should be evaluated. The system for testing of residual current devices and results of the test are presented

  Pełny tekst do pobrania w portalu

• High Performance Control of AC Drives with Matlab/ Simulink

  Publikacja

  • A. Haitham
  • A. Iqbal
  • J. Guziński

  - Rok 2021

  Explore this indispensable update to a popular graduate text on electric drive techniques and the latest converters used in industry. The Second Edition of High Performance Control of AC Drives with Matlab®/Simulink delivers an updated and thorough overview of topics central to the understanding of AC motor drive systems. The book includes new material on medium voltage drives, covering state-of-the-art technologies and challenges...

  Pełny tekst do pobrania w serwisie zewnętrznym

• The effect of the motor filters on earth fault current waveform in circuits with variable speed drives

  Publikacja

  • S. Czapp
  • J. Guziński

  - Rok 2013

  In circuits with variable speed drives distorted earth fault current flows. Earth fault current distortion influences the threshold of ventricular fibrillation. This paper presents earth fault current distortion in circuits with variable speed drives when motor filter is used. Two types of motor filter are analyzed. For every type of filter the effect of earth fault current distortion on ventricular fibrillation is evaluated.

  Pełny tekst do pobrania w serwisie zewnętrznym