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    Wyświetlanie 1-2 z 2
    Tytuł:
    Enhancing the possibilities in visualisation of the ferroresonance phenomenon
    Autorzy:
    Klimas, Maciej
    Majka, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/376677.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    ferroresonance
    Power System
    ferromagnetic core coil
    measurements
    state space and plane representation of dynamical systems
    Opis:
    Waveforms measured and recorded in a ferroresonant circuit are the base for many computations, including simulation of ferroresonance circuit over - current/voltage responses and modelling a nonlinear coil. During such a study of ferroresonance phenomenon, the time dependent nonlinear differential equations are derived from R – Ψ(i) – C ferroresonant circuit. The system of nonlinear equations is numerically solved using various algorithm applications. In applied mathematics, in particular the context of the nonlinear dynamical systems analysis, phase – plane/space graphs are a visual display of certain characteristics of kinds of differential equations. The aim of the paper is a full plane/space presentation of all possible states of a test circuit when the ferroresonance occurs. Poincare maps application is also mentioned in the paper.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2019, 98; 115-124
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of the electrical power system from the point of view of unmanned factories
    Autorzy:
    Tchórzewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/97724.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    unmanned factories
    identification
    models of development
    states space
    electrical power system deveopment
    MATLAB and Simulink
    Opis:
    Fundamentals of systems and control theory as well as systems development identification theory were used for the purpose of the DPS Identification, which allowed to generate models of development, including models of development in the form of matrix th and the equations in the states space (ss). This served as the basis to develop the systemic model of the DPS system development, which was implemented in Simulink, by defining successive blocks of the model as characteristics of individual subsystems of the DPS, identified in the MATLAB environment using the System Identification Toolbox, and transformed into the models in the state space using the Control System Toolbox. As a result of solving a set of equations of state variables using an m-file in the MATLAB environment three state variables were obtained. Based on the obtained solution, responses of the DPS system (output variable y1) to the following types of input functions: unit step 1(θ), Dirac impulse δ(θ) and sin(θ) function were obtained. The results of experiments were interpreted. An attempt to design a system that corrects and adjusts the functioning of the model of the DPS was made using state regulator and state observer as an example.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 144-161
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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