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    Wyświetlanie 1-6 z 6
    Tytuł:
    Calculating the main and leakage inductance matrix of the 3-column 15-winding autotransformer
    Autorzy:
    Mazur, D.
    Gołębiowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/141045.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    autotransformator
    indukcyjność rozproszenia
    straty wiroprądowe
    efekt zbliżenia
    autotransformer
    leakage inductance
    eddy current losses
    proximity effect
    Opis:
    The aim of this paper is presentation and comparison of calculation methods of the inductance matrix of a 3-column multi-winding autotransformer. Main and leakage autotransformer inductance was obtained using finite elements method. Static calculations were made at the current supply for 2D and 3D models, and mono-harmonic calculations were made at the voltage supply. In the mono-harmonic calculations the eddy current losses were taken into account, this made it possible to study relationship between the autotransformer parameters and the frequency. Calculations were made using Ansys and the authors' own programs in Matlab.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 3; 215-222
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement and calculation of 3-column 15-winding autotransformer
    Autorzy:
    Mazur, D.
    Gołębiowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/141055.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    autotransformator
    indukcyjność rozproszenia
    straty wiroprądowe
    efekt zbliżenia
    autotransformer
    leakage inductance
    eddy current losses
    proximity effect
    Opis:
    The 15-winding and 3-column autotransformer supplying an 18-pulse rectifier circuit was developed. Presented methods can be used also for the autotransformers of other topologies supplying different kinds of converters. Presented methods make it possible to exactly calculate main and leakage inductances of the multi-winding autotransformer. The presented analysis of the eigenvalues and eigenvectors of the inductance matrix makes it possible to identify the influence nature of individual modes on the inductance matrix, and to compare the calculation results obtained using the presented methods. Frequency dependence of autotransformer parameters was shown. Also modes of the impedance matrix of the multi-winding autotransformer was investigated, this made it possible to identify the influence nature of individual modes on the inductance matrix. Using presented methods one can exactly calculate main and leakage inductances of the autotransformer. Thanks to this, one can design in optimal way autotransformers for supplying, for example, rectifier circuits, THD coefficients. The results of the measurements and simulations were also shortly presented at the end of the article.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 3; 223-230
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autotransformator w zasilaniu wielopulsowych układów prostownikowych – metody obliczania jego indukcyjności przy zasilaniu napięciowym
    Autotransformer feeding multi pulse rectifier circuits - methods of its inductance calculation at voltage feed
    Autorzy:
    Noga, M.
    Gołębiowski, L.
    Gołębiowski, M.
    Mazur, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373213.pdf
    Data publikacji:
    2010
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    autotransformator
    prostownik
    indukcyjność rozproszenia
    zasilanie napięciowe
    Opis:
    3D finite element method was used in this article to calculate inductance matrix of the autotransformer, divided into eigenvectors [W] and eigenvalues [D]. The autotransformer windings were powered by monoharmonic voltages. This method, as an equivalent of the short circuit tests, is more suitable for calculating small values of leakage inductance. The equivalent are here the methods which are using feeding the autotransformer windings by fixed currents (it is equivalent of the idle running tests). The relationship between autotransformer inductance matrix and ripple was obtained. It appeared, that eigenvectors matrix of the inductance matrix of the autotransformer is almost independent from the ripple, and its elements are real numbers. It was treated as transformation matrix: flux linkages - windings currents flows. Relation from the ripple of the eigenvalues of inductance matrix was synthesized by means of ladder circuits. As a result the exact substitute diagram of the autotransformer was obtained. This article is the third one out of four articles presented at this Seminar.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2010, 86; 285-290
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autotransformator trójkolumnowy wielouzwojeniowy dla układów prostowniczych clean power
    Three columns multiwindings autotransformer for clean power rectifier circuits
    Autorzy:
    Noga, M.
    Gołębiowski, L.
    Gołębiowski, M.
    Mazur, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373785.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    autotransformator
    prostownik
    indukcyjność rozproszenia
    Opis:
    Commutation processes in power electronic converters are significantly dependent on the leakage inductances of the transformer. The calculations of the leakage inductance matrix where preformed with use of the finite element method (3D). The eddy current losses were taken into consideration. The mono harmonic calculations for different frequencies where performed. The dependence of magnetical inductance main, component zero and leakage were showed from frequency. This caused rotational currents in the core of the autotransformer and in the conductors of windings is. The way of the fusion of these inductances was introduced ladder arrangements. Adaptation of these inductances to the calculations of courses transitory converters district methods was the aim.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2009, 82; 63-68
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autotransformator w zasilaniu wielopulsowych układów prostownikowych – metody obliczania jego indukcyjności przy zasilaniu prądowym
    Autotransformer feeding multi pulse rectifier circuits - methods of its inductance calculation at current feed
    Autorzy:
    Noga, M.
    Gołębiowski, L.
    Gołębiowski, M.
    Mazur, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373205.pdf
    Data publikacji:
    2010
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    autotransformator
    prostownik
    indukcyjność rozproszenia
    zasilanie prądowe
    Opis:
    Autotransformers used for feeding rectifier circuits are multi-windings and with three columns. Rectifier simulations require leakage inductance matrix of the autotransformer. The methods of leakage inductance calculation of the autotransformers at constant current feed was presented in this article. Method of one 2D window cross section, two 2D windows cross section, and 3D method were discussed. These methods require various software and they have various hardware requirements, but their results are different from each other. This article shows that the reason for the differences among individual elements of leakage inductance matrix, obtained using different calculation methods, are various influences from the main magnetic circuit and differences in zero component. Influences from the main magnetic circuit in the leakage are not dangerous for simulation, because their high values already exist in main magnetic circuit. However it is important to improve eigenvalues of the zero components. The article shows how to improve these eigenvalues. This article is the second one out of four articles presented at this Seminar.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2010, 86; 279-283
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indukcyjność rozproszenia transformatorów wielouzwojeniowych, trójkolumnowych
    Leakage inductance of the multi windings transformers with three columns
    Autorzy:
    Lewicki, J.
    Gołębiowski, L.
    Gołębiowski, M.
    Mazur, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373387.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    transformator wielouzwojeniowy
    transformator trójkolumnowy
    autotransformator
    indukcyjność rozproszenia
    Opis:
    Commutation processes in power electronic converters are significantly dependent on the leakage inductances of the transformer. The calculations of the leakage inductance matrix where preformed with use of the finite element method (3D). The eddy current losses were taken into consideration. The mono harmonic calculations for different frequencies where performed. The dependence of magnetical inductance main, component zero and leakage were showed from frequency. This caused rotational currents in the core of the autotransformer and in the conductors of windings is. The way of the fusion of these inductances was introduced ladder arrangements. Adaptation of these inductances to the calculations of courses transitory converters district methods was the aim. The article presents ladder circuits, which synthesize zero component inductance and leakage inductance of the transformer. They are also used to complement [8] (remove imperfection) substitute diagram of the main magnetic circuit of the transformer. Including the substitute diagram they can be used for fast calculations of the transient states in clean power multi-pulse rectifiers circuits. This way of calculations represents proper conditions of the diodes commutation and allows for studying of the circuits higher harmonics.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2009, 83; 111-117
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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