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    Wyświetlanie 1-3 z 3
    Tytuł:
    Analysis of the operation of a switched reluctance motor in the extended constant power range
    Autorzy:
    Korkosz, Mariusz
    Podskarbi, Grzegorz
    Krzywdzińska-Kornak, Krystyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2202546.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    continuous conduction
    control strategy
    extended constant power range
    SRM
    switched reluctance motor
    Opis:
    In this paper, an analysis of the properties of a switched reluctance motor (SRM) 8/6 in an extended constant power range is presented. The typical constant power range to constant torque range ratio is between 2 and 3. In the case of machines designed as an electric vehicle drive, it is important to maximize this ratio. In the case of an SRM, it is possible to achieve this by applying an appropriate control strategy. An analysis of the SRM operation utilizing a modified control algorithm allows control of the maximum value of the motor phase current. As a consequence, using the so-called nonzero initial conditions for the current and flux allows the output power to be maintained in a wide speed range. For the improvement of drive system efficiency, the work of the phase current regulator should be limited to a minimum. The most advantageous work conditions we obtain with single-time current regulator work. Laboratory verification has been performed for selected states of motor work.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 1; 43--58
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis and Designing of a Wireless Charging System for Electric Vehicles Using the Topology of Double Sided LLC Compensator
    Autorzy:
    Khademi, Hamid Reza
    Moghaddam, Mahmoud Samiei
    Baygi, Seyed Javad Mohammadi
    Hajizadeh, Amin
    Powiązania:
    https://bibliotekanauki.pl/articles/103301.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wireless charging system
    electric vehicles
    continuous conduction mode
    discontinuous conduction mode
    bezprzewodowy system ładowania
    pojazdy elektryczne
    tryb ciągłego przewodzenia
    tryb przewodzenia nieciągłego
    Opis:
    The purpose of the present study was to simulate the equivalent circuit in the MATLAB software in order to implement the desired relationships for both continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM), and to obtain the power and efficiency values at different frequencies. Then, it was necessary to optimize the effective values on the power by Particle Swarm Optimization (PSO) algorithm. After optimization, the optimization and pre-optimization results were compared and, if post-optimization results were not desirable, effective parameters should be reviewed before the optimization stage and the tunable parameters should be changed to achieve the desired results. This process will continue to obtain the optimization results. The results show that the highest efficiency is 98% in the DCM mode and 95% in the CCM mode. In both methods, we achieved more favorable results than the with the PSO method. However, the DCM mode provides an improvement which is about 2.6% higher than CCM.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 2; 168-175
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Averaged model of a buck DC–DC converter for single-loop description of current-mode control
    Autorzy:
    Janke, Włodzimierz
    Bączek, Maciej
    Kraśniewski, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/141131.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    averaged model
    buck converter
    continuous conduction mode
    peak current
    mode control
    Opis:
    : Averaged models: an AC large signal, DC and AC small signals of a currentcontrolled buck converter are described. Only peak current mode control of a converter working in the continuous conduction mode (CCM) is considered. The model derivation differs from the typical approaches presented in the literature and doesn’t refer to the multiloop concept of a current controlled converter. The separation of the variables method is used in the model derivation. The resulting models are presented in the form of an equation set and equivalent circuits. The calculations based on the presented models are verified by measurements and full-wave PSpice simulations.
    Źródło:
    Archives of Electrical Engineering; 2019, 68, 4; 891-905
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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