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Wyszukujesz frazę "Urbanek, B." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Pomiar mocy mechanicznej maszyn elektrycznych poprzez pomiar kąta skręcenia wału
Measurement of electrical machinery mechanical power by measurement of angular twist of shaft
Autorzy:
Barszcz, T.
Urbanek, J
Schmidt, B.
Powiązania:
https://bibliotekanauki.pl/articles/1373850.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
pomiar mocy mechanicznej
moc mechaniczna
maszyna elektryczna
pomiar kąta skręcania
Opis:
Mechanical power carries important information about the technical state of rotating machinery. Dynamic measurement of the mechanical power is especially important for electrical machines. The paper presents the idea of mechanical power measurement by measurement of the angular twist of the shaft. The measurement is based on analysis of pulses from two disks, installed at two ends of the machine. It gives accurate information about changes of the rotational speed as well as the twist angle of the shaft. Next, the paper presents developed data processing algorithms. It is impossible in practice to machine ideal impulse disks and thus it is necessary to apply the compensation of results based on measured innacuracies. The proposed method is discussed and shown applicable for measurement of the angular twist of the power generation turboset. The method was validated on a test rig. The design of the rig and test measurements are presented. Measured mechanical power was compared with the electric power measured by traditional methods. High correlation of these values was achieved.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2009, 82; 233-237
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of amplitude-based and phase-based method for speed tracking in application to wind turbines
Autorzy:
Urbanek, J.
Barszcz, T.
Sawalhi, N.
Randall, R. B.
Powiązania:
https://bibliotekanauki.pl/articles/220435.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
speed tracking
speed estimation
instantaneous frequency
wind turbines
Opis:
Focus of the vibration expert community shifts more and more towards diagnosing machines subjected to varying rotational speeds and loads. Such machines require order analysis for proper fault detection and identification. In many cases phase markers (tachometers, encoders, etc) are used to help performing the resampling of the vibration signals to remove the speed fluctuations and smearing from the spectrum (order tracking). However, not all machines have the facility to install speed tracking sensors, due to design or cost reasons, and the signal itself has to then be used to extract this information. This paper is focused on the problem of speed tracking in wind turbines, which represent typical situations for speed and load variation. The basic design of a wind turbine is presented. Two main types of speed control i.e. stall and pitch control are presented. The authors have investigated two methods of speed tracking, using information from the signal (without relying on a speed signal). One method is based on extracting a reference signal to use as a tachometer, while the other is phase-based (phase demodulation).Both methods are presented and applied to the vibration data from real wind turbines. The results are compared with each other and with the actual speed data.
Źródło:
Metrology and Measurement Systems; 2011, 18, 2; 295-303
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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