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    Wyświetlanie 1-9 z 9
    Tytuł:
    Analysis of electromagnetic performance of the interior permanent magnet brushless DC motor with stator slot skewed structure based on quasi-3D moving electromagnetic-field circuit coupling calculation
    Autorzy:
    Gan, Xue-Gui
    Fan, Zhen-Nan
    Li, Jing-Can
    Powiązania:
    https://bibliotekanauki.pl/articles/2042795.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    interior permanent magnet brushless DC motor
    quasi-three-dimensional electromagnetic-field circuit coupling analysis
    stator slot skew
    Opis:
    This paper takes a 50 kW interior permanent magnet brushless DC motor as an example, and explores the influence of the degree of stator slot skew on the overall motor magnetic density and air gap magnetic density; then reveals the influences of stator slot skewed structure on a series of key electromagnetic properties like no-load back electromotive force (B-EMF), cogging torque, electromagnetic torque, torque fluctuation, electromagnetic loss, input power, output power and operating efficiency. On this basis, a relatively best range of the skew degrees is obtained. The research work in this paper has direct reference value for the further improvement of design and manufacture, operation and maintenance, control and protection of such motors.
    Źródło:
    Archives of Electrical Engineering; 2022, 71, 1; 159-174
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonlinear behavior analysis of split-winding dry-type transformer using a new star model and a coupled field-circuit approach
    Autorzy:
    Azizian, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/140907.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    coupled field circuit
    electromagnetic modeling
    split-winding dry-type transformer
    nonlinear equivalent circuit
    finite element
    Opis:
    Regarding the importance of short circuit and inrush current simulations in the split-winding transformer, a novel nonlinear equivalent circuit is introduced in this paper for nonlinear simulation of this transformer. The equivalent circuit is extended using the nonlinear inductances. Employing a numerical method, leakage and magnetizing inductances in the split-winding transformer are extracted and the nonlinear model inductances are estimated using these inductances. The introduced model is validated and using this nonlinear model, inrush and short-circuit currents are calculated. It has been seen that the introduced model is valid and suitable for simulations of the split-winding transformer due to various loading conditions. Finally, the effects of nonlinearity of the model inductances are discussed in the following.
    Źródło:
    Archives of Electrical Engineering; 2016, 65, 4; 773-787
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of fractional electrical circuit with rectangular input signal using Caputo and conformable derivative definitions
    Autorzy:
    Piotrowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/140842.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fractional order system
    Caputo definition
    conformable fractional definition
    fractional electrical circuit
    Opis:
    An analysis of a given electrical circuit using a fractional derivative. The statespace equation was developed. The dynamics of tensions described by Kirchhoff’s laws equations. The paper used the definition of the integral derivative Caputo and CDF conformable fractional definition. An electrical circuit solution using Caputo and CDF definitions for rectangular with zero initial conditions was developed. The results obtained using the Caputo and CDF definitions were compared. The solutions are shown for capacitor voltages, for fractional derivative orders of 0.6, 0.8, 1. The results were compared using graphs.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 4; 789-802
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applicability of Park transformation for the analysis of transient performance during subsynchronous resonances
    Autorzy:
    Kreischer, Ch.
    Kulig, S.
    Göbel, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/140498.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    subsynchronous resonances
    parameter identification
    equivalent circuit
    standstill frequency response test
    three phase short circuit test
    evolutionary strategy
    Opis:
    Long transmission lines have to be compensated to enhance the transport of active power. But a wrong design of the compensation may lead to subsynchronous resonances (SSR). For studies often park equivalent circuits are used. The parameters of the models are often determined analytically or by a three-phase short-circuit test. Models with this parameters give good results for frequencies of 50 Hz and 100 Hz resp. 60 Hz and 120 Hz. But SSR occurs at lower frequencies what arises the question of the reliability of the used models. Therefore in this publication a novel method for the determination of Park equivalent circuit parameters is presented. Herein the parameters are determined form time functions of the currents and the electromagnetic moment of the machine calculated by transient finite-element simulations. This parameters are used for network simulations and compared with the finite-element calculations. Compared to the parameters derived by a three-phase short-circuit a significant better accuracy of simulation results can be achieved by the presented method.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 3; 401-415
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics simulations of the electrodynamic railgun different constructions and their measurement verification
    Autorzy:
    Piekielny, Paweł
    Tomczuk, Bronisław
    Waindok, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/27309948.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    3D field analysis
    analysis of transients
    analytical models
    electrodynamic accelerator
    experimental verification
    field-circuit modeling
    projectile velocity
    Opis:
    Dynamic characteristics for three types of railgun constructions were simulated and measured in this work. The simplest construction is the iron-less (IL) railgun, while the two other ones (IC and ICPM) have an iron-core. The iron-core permanent magnet (ICPM) railgun additionally has permanent magnets. To compare their characteristics, similar dimensions of the rails and iron cores were adopted, and the same power supply system was used. Numerical magnetic field analyses and our analytical models have been used to determine the electromagnetic parameters. They were verified experimentally. The transient states of the railguns were studied with our field-circuit mathematical model, and their results were also verified by experiments.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 4; 951--969
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of instantaneous power components of electric circuit with a semiconductor element
    Autorzy:
    Zagirnyak, M.
    Kalinov, A.
    Maliakova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/141428.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    semiconductor element
    instantaneous power
    equations of instantaneous power orthogonal components balance
    Opis:
    Both a classical instantaneous power method and a method based on equations of instantaneous power orthogonal components balance have been used to analyze power processes in electric circuits with semiconductor elements. Automated method of forming instantaneous power harmonic components was used to obtain analytical expressions and numerical values of instantaneous power components of analyzed electric circuits. A coefficient for estimation of a semiconductor converter nonlinearity degree has been offered.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 3; 473-486
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of linear continuous-time systems by the use of the conformable fractional calculus and Caputo
    Autorzy:
    Piotrowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/141097.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conformable fractional derivative
    fractional electrical circuit
    different fractional order system
    Opis:
    The paper presents general solutions for fractional state-space equations. The analysis of the fractional electrical circuit in the transient state is described by the equation of the state and space equations. The results are presented for the voltage of a capacitor and current in a coil, for different alpha values. The Caputo and conformable fractional derivative definitions have been considered. At the end, the results have been obtained.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 3; 629--639
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An identification procedure of electromagnetic parameters for an induction motor equivalent circuit including rotor deep bar effect
    Autorzy:
    Rolek, J.
    Utrata, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/141612.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    induction motors
    equivalent circuits
    parameter identification
    frequency-domain analysis
    genetic algorithms
    Opis:
    The paper presents an identification procedure of electromagnetic parameters for an induction motor equivalent circuit including rotor deep bar effect. The presented procedure employs information obtained from measurement realised under the load curve test, described in the standard PN-EN 60034-28: 2013. In the article, the selected impedance frequency characteristics of the tested induction machines derived from measurement have been compared with the corresponding characteristics calculated with the use of the adopted equivalent circuit with electromagnetic parameters determined according to the presented procedure. Furthermore, the characteristics computed on the basis of the classical machine T-type equivalent circuit, whose electromagnetic parameters had been identified in line with the chosen methodologies reported in the standards PN-EN 60034-28: 2013 and IEEE Std 112TM-2004, have been included in the comparative analysis as well. Additional verification of correctness of identified electromagnetic parameters has been realised through comparison of the steady-state power factor-slip and torque-slip characteristics determined experimentally and through the machine operation simulations carried out with the use of the considered equivalent circuits. The studies concerning induction motors with two types of rotor construction – a conventional single cage rotor and a solid rotor manufactured from magnetic material – have been presented in the paper.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 2; 279--291
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of a single-phase capacitor induction motor operating at two power line frequencies
    Autorzy:
    Leicht, A.
    Makowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/140512.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    początkowy współczynnik jakości
    silniki indukcyjne
    symulacja
    induction motors
    single-phase
    circuit modelling
    simulation
    starting quality factor
    Opis:
    The paper presents a modelling mathematical tool for prediction of dynamic and steady-states operation of the single-phase capacitor induction motor for different values of the capacitor capacitance and different frequency of voltage supply at no-load and rated load conditions. Developed mathematical model of the capacitor induction motor was implemented for calculation using Matlab/Simulink software. Presented simulation results may be utilized to achieve better starting quality of single-phase capacitor induction motors.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 2; 251-266
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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