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Wyszukujesz frazę "voltage synchronization" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Six-phase motor drive supplied by four voltage source inverters with synchronized space-vector PWM
    Autorzy:
    Oleschuk, V.
    Grandi, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/140418.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    podwójny układ trójfazowy
    modulacja
    synchronizacja napięcia
    dual three-phase system
    modulation strategy
    voltage synchronization
    Opis:
    Novel method of space-vector-based pulsewidth modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive based on asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC-sources. Simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 4; 445-458
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Initial Excitation Issues of Synchronous Generator with VSI Inverter in Varying Rotational Speed Operation
    Autorzy:
    Kozak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2064987.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    synchronous generator
    initial excitation
    FOC control
    voltage source inverter
    synchronization
    Opis:
    Synchronous self-excited generators still are and probably will be the most popular 3-phase alternators installed in inland power stations so onboard of seagoing ships. Because of fuel savings and environmental restrictions Diesel, dual-fuel and gas propulsion engines for alternators of wide-range varying revolutions drives are increasingly used. There must be efficient way of creating 3-phase voltages of desired constant parameters ensured when generator produces variable amplitudes and frequencies of voltages because of changing rotational speed. As the control method modified field oriented control widely used with squirrel cage induction machines was chosen. This control method involves decoupling of currents and control voltages to flux and torque components and keeping them in optimal (orthogonal) condition. In order to obtain proper excitation and operation of such generator several factors have to be taken into account. Nonlinear dependence of voltage generated from rotational speed of self-excited synchronous generator is one of the factors that affects initial excitation process thus specific control method while generator startup. Theoretical background of synchronous generator excitation and voltage source inverter adopted FOC control method along with experimental results obtained in laboratory test bench of 5,5 kW generator and conclusions were presented.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 377--383
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Frequency synchronization error correction by using DFT in sinusoidal voltage measurements
    Autorzy:
    Krajewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/114200.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    correction of synchronization error
    accurate RMS voltage measurement
    DFT algorithm
    Opis:
    The paper presents a method of correcting a frequency synchronization error in the sinusoidal voltage measurement. Correction is performed by changing a frequency of the measured signal on the basis of the respectively determined synchronization error by using DFT. Carried out simulation experiments indicate that the correction can theoretically improve the accuracy of measurement of the RMS voltage to the level below 1 ppm. The results of measurements taken by a highly accurate voltmeter Agilent 3458 confirm the conclusions of the simulation, that it is possible to repeatedly reduce the frequency synchronization error by applying the developed correction method in the voltage measurement.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 7; 218-220
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Three-phase voltage outages kompensator with cascaded multilevel converter
    Autorzy:
    Iwaszkiewicz, J.
    Bogusławski, P.
    Krahel, A.
    Łowiec, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/141242.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    superkondensator
    spadki napięcia
    wielopoziomowy falownik
    synchronizacja
    supercapacitor
    voltage dips and sags
    multilevel inverter
    synchronization
    Opis:
    The paper presents a laboratory prototype of the three-phase transformer less voltage outages compensator with an energy storage based on high voltage supercapacitors. The system described is able to protect an isolated grid e.g. in industry against short voltage interruptions, dips and sags. An idea of a control method as well as a Digital controller has been presented, too.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 3; 325-336
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Grid synchronization and symmetrical components extraction with PLL algorithm for grid connected power electronic converters - a review
    Autorzy:
    Bobrowska-Rafał, M.
    Rafał, K.
    Jasiński, M.
    Kaźmierkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/200073.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase locked loop PLL
    symmetrical component extraction
    grid synchronization
    grid-connected converter
    smart grid
    renewable energy sources (RES)
    voltage dip
    higher harmonics
    power quality
    Opis:
    In this paper, a review of Phase Locked Loop (PLL) algorithms and symmetrical component extraction methods intended for grid-connected power electronic converters are presented. Proposed classification is based on voltage representation in three coordinates: natural (abc), stationary (alfa beta) and rotating coordinates (dq). The three selected algorithms are described in details: Dual Second Order Generalized Integrator (DSOGI-PLL), Dual Virtual Flux – both in stationary coordinates. The third one, in rotating dq coordinates, is Dual Synchronous Reference Frame PLL (DSRF-PLL). A comparison of PLL algorithms is presented. Also, selected experimental results are given to verify practical application of discussed algorithms.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 485-497
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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