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    Wyświetlanie 1-3 z 3
    Tytuł:
    A new C-dump converter for performance improvement of SR motor drive: conceptual considerations and simulations
    Autorzy:
    Wróbel, K.
    Tomczewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/97321.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    switched reluctance motors
    electrical drives
    power electronics
    Opis:
    In the article a new type of the C-dump converter type was presented, it was intended to supply switched reluctance drives, which is a modification of the configuration introduced in [1]. A structure and a principle of its working were discussed. In this construction independent supplying sections for each motor phase were used. Differences in construction and working both of the configurations and their influence on efficiency of the drive were discussed. Model results of simulation calculations of electromagnetic torque and phase current waveforms were presented. Applying the new system caused the increase in the efficiency of the drive.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 288-293
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electronic realizations of fractional-order elements: II. Simulation studies
    Autorzy:
    Jakubowska, A.
    Szymczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/377676.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    fractional-order inductance Lβ and capacitance Cα
    generalized impedance converter
    GIC
    fractional-order element
    Opis:
    The paper presents simulation studies on the synthesis of new fractional-order elements, using classic fractional-order components, such as supercapacitors and real coils with ferromagnetic cores. These new fractional-order elements have been realized using a generalized impedance converter GIC. Firstly, a new method for fractional-order elements modeling in PSpice has been described, which involves the use of controlled voltage E or current G sources, defined in Analog Behavioral Modeling (ABM). An equivalence of the classic and proposed description of the fractional-order capacitor have been presented. For the GIC structure, two cases of the have been analyzed in the PSpice: first, with models of ideal operational amplifiers, modeled as controlled voltage sources, and the second with models of the real operational amplifiers, of type OPA549. The obtained frequency characteristics of an exemplary GIC structure with one fractionalorder element show big similarity for both types of models. The impact of different values of the parameter α and the type of the used real amplifier on the solution has been analyzed too.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 85; 149-159
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electronic realizations of fractional-order elements: I. Synthesis of the arbitrary order elements
    Autorzy:
    Jakubowska, A.
    Walczak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/376325.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    fractional-order inductance Lβ and capacitance Cα
    generalized impedance converter
    GIC
    fractional-order element
    Opis:
    The paper presents a synthesis method of new fractional-order elements, using classic fractional-order components, such as supercapacitors and real coils with ferromagnetic cores. These new fractional-order elements have been realized using a generalized impedance converter GIC. Two cases have been analyzed in the paper: first, with only one fractional-order element being a load impedance of the generalized impedance converter, and second, with two fractional-order elements - one being a part of the structure of the GIC and the second being the load impedance. The derived relations are illustrated by simulation examples for the circuit. The impact of different values of the parameter α on the solution of the considered problem has been analyzed too.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 85; 137-148
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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