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    Wyświetlanie 1-3 z 3
    Tytuł:
    Evaluation of the Shunt Active Power Filter apparent power ratio using particle swarm optimization
    Autorzy:
    Kouzou, A.
    Mahmoudi, M. O.
    Boucherit, M. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/229885.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    effective apparent power
    shunt active power filter
    particle swarm optimization (PSO)
    harmonics
    unbalanced voltages
    unbalanced load
    Opis:
    The main objective of this present paper is the study of the Shunt Active Power Filter (APF) compensations capability for different perturbations in AC power system such as current unbalance, phase shift current and undesired harmonics generated by nonlinear load and/or by the power system voltage. This capability is determined by the maximum rate of the apparent power that can be delivered. This study is based on the definition of the effective apparent power as defined in IEEE 1459-2000 which was proved to be the suitable amount to be concerned in the design process of different devices.
    Źródło:
    Archives of Control Sciences; 2010, 20, 1; 47-76
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Current limiting algorithm for three-phase grid-connected inverters
    Autorzy:
    Tran, Tho Quang
    Powiązania:
    https://bibliotekanauki.pl/articles/2135740.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    current limitation
    negative sequences
    reactive power compensation
    three-phase grid-connected inverter
    unbalanced voltages
    Opis:
    Grid-connected inverters are commonly used in systems of renewable energy to convert this energy source into AC power with parameters suitable for connection to the grid. In the normal operating conditions, the grid-connected inverters mainly generate active power to the grid. However, when a voltage sag or voltage imbalance occurs, the grid voltage imbalance in the conventional control methods causes negative sequence components and increases the output current magnitude of inverters. The increase of current can damage power semiconductor devices. This paper presents a strategy to limit the current magnitude of inverters under unbalanced grid voltage conditions. In this strategy, a multiple-complex-coefficient filter is used to eliminate the negative sequence voltage components. This method does not require any additional hardware. A three-phase gridconnected photovoltaic inverter system using a solar array of 20 kWp is also used for the survey. The effectiveness has been validated when comparing the simulation results on Matlab/Simulink of the proposed method with those of the conventional method.
    Źródło:
    Archives of Electrical Engineering; 2022, 71, 3; 559--579
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Currents physical components (CPC) in circuits with nonsinusoidal voltages and currents. Part 1, Single-phase linear circuits
    Autorzy:
    Czarnecki, L. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/262747.pdf
    Data publikacji:
    2005
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Tematy:
    nonsinusoidal voltages and currents
    harmonics
    power definitions
    power phenomena
    apparent
    reactive
    scattered
    unbalanced currents or powers
    Opis:
    The paper summarizes the present state of discussions on power phenomena, power definitions and compensation in single-phase linear circuits. The main concepts developed over several decades on how various non-active powers in circuits with nonsinusoidal voltages and currents should be defined and compensated are presented along with a detailed discussion of these concepts. The paper presents also the concept of the single-phase load current decomposition into Currents' Physical Components (CPC) and its application for power definitions and compensation in such circuits. The paper is not addressed to scientists and experts on powers, but rather to common electrical engineers that sometimes face power related problems in nonsinusoidal systems.
    Źródło:
    Electrical Power Quality and Utilisation. Journal; 2005, 11, 2; 3-14
    1896-4672
    Pojawia się w:
    Electrical Power Quality and Utilisation. Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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