Temat: electromagnetic analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A dual-stator brushless doubly-fed generator for wind power application
Autorzy:: Liu, Hao
Song, Yakai
Bai, Chunlan
He, Guofeng
Yin, Xiaoju
Powiązania:: https://bibliotekanauki.pl/articles/27309959.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: doubly-fed machine
dual-stator
electromagnetic analysis
operational characteristics modes
wind power generation
Opis:: A novelty dual-stator brushless doubly-fed generator (DSBDFG) with magnetic-barrier rotor structure is put forward for application in wind power. Compared with a doubly-fed induction generator, the DSBDFG has virtues of high reliability and low maintenance costs because of elimination of brush and sliprings components. Therefore, the proposed structure has tremendous potential as a wind power generator to apply in wind power. According to the operating principle of electric machine, the DSBDFG is studied in wind power application. At first, the topology, the winding connecting, the rotor structure, the power flow chart of different operating models and the variable speed capability of electric machine are discussed and analyzed. Then, a 50 kW DSBDFG is designed. Based on the principal dimension of the design electric machine, the electromagnetic characteristics of the DSBDFG with different running modes are analyzed and calculated to adopt the numerical method. From the result, it meets the requests of electromagnetic consistency and winding connecting in the design electric machine. Meanwhile, it confirms the proposed DSBDFG has the strong ability of speed regulation.
Źródło:: Archives of Electrical Engineering; 2023, 72, 4; 1073--1087
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

Tytuł:: FE analysis of current displacement phenomena in a squirrel cage motor working at cryogenic temperature
Autorzy:: Barański, M.
Powiązania:: https://bibliotekanauki.pl/articles/950666.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: FE analysis of submerged induction motor
cryogenic temperature
coupled electromagnetic-thermal phenomena
current displacement
Opis:: The paper presents the special software for transient FE analysis of coupled electromagnetic-thermal problems in a squirrel cage submerged motor working at cryogenic temperature. A time-stepping finite element method and transients analysis of an induction motor has been applied. The non-linearity of the magnetic circuit, the movement of the rotor, skewed slots, and the influence of temperature on electric and thermal properties of the materials has been taken into account. Developed on the basis of presented algorithm a computer program used to analyze the phenomenon of current displacement in the rotor bars of high-voltage cage induction motor working in cryogenic conditions. The results of the simulations are presented.
Źródło:: Archives of Electrical Engineering; 2014, 63, 2; 139-147
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modal-frequency spectrum of magnetic flux density in air gap of permanent magnet motor
Autorzy:: Witczak, P.
Kubiak, W.
Lefik, M.
Szulakowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/140681.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electromagnetic fields
waves permanent magnet machines
air gap magnetic flux
spectral analysis
finite element method
Opis:: The classic relationships concerning the harmonic content in the air gap field of three-phase machines are presented in form of series of rotating waves. The same approach is applied to modeling of permanent magnet motors with fractional phase windings. All main reasons of non-sinusoidal shape of flux density distribution, namely, magnets’ shape and their placement, slotting, magnetic saturation and eccentricity are also related to their counterparts in modal-frequency spectrum. The Fourier 2D spectrum of time-stepping finite element solution is confronted with results of measurements, with special attention paid to accuracy of both methods.
Źródło:: Archives of Electrical Engineering; 2014, 63, 1; 29-46
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Two-level approach for solving the inverse problem of defects identification in Eddy Current Testing - type NDT
Autorzy:: Putek, P.
Crevecoeur, G.
Slodička, M.
Gawrylczyk, K.M.
Van Keer, R.
Dupré, L.
Powiązania:: https://bibliotekanauki.pl/articles/140340.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: charakterystyka wad
elektromagnetyczny problem odwrotny
problem odwrotny
algorytmy optymalizacji
algorytmy dwupoziomowe
badanie wiroprądowe
analiza wrażliwości
defect characterization
electromagnetic inverse problem
two level optimization algorithms
eddy current testing method
sensitivity analysis
Opis:: This work deals with the inverse problem associated to 3D crack identification inside a conductive material using eddy current measurements. In order to accelerate the time-consuming direct optimization, the reconstruction is provided by the minimization of a last-square functional of the data-model misfit using space mapping (SM) methodology. This technique enables to shift the optimization burden from a time consuming and accurate model to the less precise but faster coarse surrogate model. In this work, the finite element method (FEM) is used as a fine model while the model based on the volume integral method (VIM) serves as a coarse model. The application of the proposed method to the shape reconstruction allows to shorten the evaluation time that is required to provide the proper parameter estimation of surface defects.
Źródło:: Archives of Electrical Engineering; 2011, 60, 4; 497-518
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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