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    Wyświetlanie 1-7 z 7
    Tytuł:
    Application of higher order forms for the description of electromechanical energy converters
    Autorzy:
    Sobczyk, T. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/141334.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    przetwornik elektromechaniczny
    funkcja koenergii
    prąd magnesujący
    indukcyjność nieliniowa
    indukcyjność dynamiczna
    electromechanical converters
    co-energy function
    higher order forms
    magnetizing current
    non-linear inductances
    dynamic inductances
    Opis:
    The purpose of that paper is to develop of unified equations of electromechanical energy converters accounting for the magnetic non-linearity of the main magnetic circuit of a converter. The concept of applying higher order forms of winding currents for the description of the co-energy function is introduced in order to derive the structure of converter equations via mathematical analysis. Also, another concept of equivalent magnetizing currents is applied to determine the higher order forms for selected converters designs. The structure of circuital equations for converters with multiple windings has been unified by means of the introduction of matrices of dynamic and nonlinear inductances following the higher order forms of the co-energy function.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 1; 67-75
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of constructional turbo-generator end region design on end winding inductances
    Autorzy:
    Freese, M.
    Kulig, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/140504.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    turbogenerator
    zakończyć indukcyjność uzwojenia
    end winding inductances
    end winding leakage inductance
    Opis:
    The paper introduces a comprehensive investigation in end winding inductances of large two-pole turbo-generators. With the aid of an analytic-numeric approach, where Neumann's formula is applied, the influence of geometric characteristics of double-layer stator end windings with involute shape is analysed. This parameter study results in approximation formulas for the stator self and mutual inductances at stand level as well as for the common used end winding leakage inductance. In order to consider field affecting components as pressure plate, flux shield, rotor shaft and rotor retaining ring, finite elements models for two machines (250 MVA and 1150 MVA) are created and computed. The results are integrated in the developed approximation formulas. Finally the simulation results of machine 1 are compared to the data of two different measurements. All approaches introduced in this paper show good correlation. The high speed of the analytic-numeric calculation is combined with the accuracy and opportunity to consider field affecting components within the extensive finite element computation successfully.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 2; 199-210
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of slot leakage inductance for three-phase induction motor winding using an analytical method
    Autorzy:
    Staszak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/141564.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    slot leakage inductance
    self- and mutual inductances
    induction motor
    Opis:
    The article introduced some expressions for self- and mutual slot leakage inductance of phase windings for the mathematical model of an induction machine in the natural phase coordinate system and for dq0 model and in an arbitrary coordinate frame. Calculation of self- and mutual slot leakage inductance have been performed for threephase double-layer, delta and delta-modified winding connections. Introduced expressions may be useful in the design of windings and in the analysis of dynamic states of AC electrical machines.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 4; 569-591
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On determination of inductances for circuit models of AC machines
    Autorzy:
    Sobczyk, T. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/141479.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric machines
    modelling magnetic non-linearity
    dynamic inductances
    non-linear inductances
    Opis:
    The paper discuss a problem of determination of inductances for AC machine windings when saturation of magnetic circuit is not neglected. For such cases, computation of magnetic field distribution in the machine magnetic circuit is a starting point for post processing procedures leading to various values, among others the co-energy in a given area and linkage fluxes of windings. This paper shows how to determine winding inductances in a nonlinear magnetic circuit from these two values and also how to compute directly nonlinear inductances. Problem is not trivial because such inductances are not uniquely determined as for linear case. In the paper a definition of nonlinear inductances is proposed which makes the choice unique.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 3; 487-496
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Small power synchronous machine with smc pm excited rotor – experimental and simulation results
    Maszyna synchroniczna małej mocy z wirnikiem proszkowym, wzbudzana magnesami trwałymi – wyniki badań symulacyjnych i eksperymentalnych
    Autorzy:
    Piotuch, R.
    Pałka, R.
    Tarenko, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1367689.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    PM electrical machines
    d q inductances
    maszyny wzbudzane magnesami trwałymi
    indukcyjności d q
    Opis:
    Artykuł przedstawia wyniki badań symulacyjnych i eksperymentalnych maszyny synchronicznej z magnesami zagnieżdżonymi. Stojan i korpus maszyny zostały zapożyczone z klasycznej maszyny asynchronicznej klatkowej. W trakcie wcześniejszych prac geometria wirnika została zoptymalizowana, zaprojektowana i wykonana w technologii proszków magnetycznych. Przedstawiono szczegóły metody użytej do wyznaczania indukcyjności dla różnych wartości prądu. W trakcie badań wyznaczono indukcyjności własne i wzajemne uzwojeń fazowych oraz w osi d i q. Pomierzono również wartości momentu obrotowego dla różnych wartości prądu w funkcji kąta mocy. Wyniki badań eksperymentalnych porównano z wynikami badań symulacyjnych. Na stanowisku pomiarowym wyznaczono również mapę sprawności badanej maszyny.
    The work presented in this paper relates to an Interior Permanent Magnet Synchronous Motor (IPMSM) experimental and simulation results. The stator of the machine is an mass-produced one with classic assembly. The rotor has been previously optimized, designed and constructed and made of Soft Magnetic Composites (SMC). There is presented a method of measuring inductances at different load currents. Particularly self and mutual winding inductances as well as d and q axis inductances were evaluated. The value of torque was evaluated for different currents and power angles. Experimental results were compared with simulation ones. On the test stand there was also evaluated efficiency map.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2015, 3, 107; 161-165
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved Matlab/Simulink model of dual three-phase fractional slot and concentrated winding PM motor for EV applied brushless DC drive
    Autorzy:
    Shchur, Ihor
    Mazur, Damian
    Makarchuk, Oleksandr
    Bilyakovskyy, Ihor
    Turkovskyi, Valentyn
    Kwiatkowski, Bogdan
    Kalandyk, Dawid
    Powiązania:
    https://bibliotekanauki.pl/articles/2175119.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric vehicle
    EV
    dual three-phase motor
    DTP motor
    BLDC drive
    fractional slot concentrated winding PM motor
    FEM modeling
    self and mutual differential inductances
    Matlab/Simulink model
    Opis:
    The development of electric vehicles (EV) necessitates the search for new solutions for configuring powertrain systems to increase reliability and efficiency. The modularity of power supplies, converters, and electrical machines is one such solution. Among modular electric machines, dual three-phase (DTP) motors are the most common in high-power drives. To simplify low and medium power drives for EVs based on DTP PM motor, it is proposed to use a BLDC drive and machine of the simplest design - with concentrated windings and surface mounted PMs on the rotor. To study and create such drives, an improved mathematical model of DTP PM machine was developed in this work. It is based on the results of 2D FEM modeling of the magnetic field. According to the developed method, the dependences of the self and mutual inductances between all phase windings from the angle of rotor position and loads of different motor modulus were determined. Based on these inductances, the circuit computer model of DTP PM machine was created in the Matlab/Simulink. It has a high simulation speed and a high level of adequacy, which is confirmed by experimental studies with a mock-up sample of the electric drive system.
    Źródło:
    Archives of Control Sciences; 2022, 32, 4; 677--707
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis and effect of static eccentricity fault on performance indicators of a synchronous reluctance motor
    Autorzy:
    Idoko, Emmanuel
    Umoh, Gideon David
    Obe, Pauline Ijeoma
    Mama, Benjamin Okwudili
    Obe, Emeka Simon
    Powiązania:
    https://bibliotekanauki.pl/articles/27309936.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    degree of eccentricity
    faults
    finite element method
    inductances
    static eccentricity
    synchronous reluctance motor
    winding function
    Opis:
    Fault diagnosis and condition monitoring of synchronous machines running under load is a key determinant of their lifespan and performance. Faults such as broken rotor bars, bent shafts and bearing issues lead to eccentricity faults. These faults if not monitored may lead to repair, replacement and unforeseen loss of income. Researchers who attempted to investigate this kind of machine stopped at characterizing and deduced ways, types and effects of rotor eccentricity fault on the machine inductances using the winding function method. A modified closed-form analytical model of an eccentric synchronus reluctance motor (SynRM) is developed here taking into cognizance the machine dimensions and winding distribution for the cases of a healthy and unhealthy SynRM. This paper reports the study the SynRM under static rotor eccentricity using the developed analytical model and firming up the model with finite element method (FEM) solutions. These methods are beneficial as they investigated and presented the influence of the degrees of static eccentricity on the machine performance indicators such as speed, torque and the stator current and assess the extent to which the machine performance will deteriorate when running with and without load. The results show that static eccentricity significantly affects the machine’s performance as the degree of eccentricity increases.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 3; 829--848
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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