Temat: indukcyjność - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

Tytuł:: Convergence of the identification algorithm applied to the mutual inductance of the induction motor
Autorzy:: Jąderko, A.
Pietryka, J.
Powiązania:: https://bibliotekanauki.pl/articles/141276.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: silnik indukcyjny
indukcyjność wzajemna
konwergencja
identyfikacja
induction motor
mutual inductance
identification
convergence
Opis:: A new observer of induction motor state variables is proposed in the paper. A nonlinearity of the main magnetic path is expressed as a function of a properly chosen parameter versus the position vector length. The value of the mutual inductance received n the identification algorithm is calculated exploiting the estimated values of the state variables. The coefficients appearing in the differential equations of the observer system are modified in each step of the algorithm on the basis of the calculated mutual inductance. The analysis of convergence of the identification algorithm is shown in this paper.
Źródło:: Archives of Electrical Engineering; 2012, 61, 3; 337-345
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

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

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Skocz do pozycji: 5.

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

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