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    Wyświetlanie 1-3 z 3
    Tytuł:
    Active suspension system with integrated electrical tubular linear motor: design, control strategy and validation
    Autorzy:
    Thul, A.
    Eggers, D.
    Riemer, B.
    Hameyer, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/141477.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    active vehicle suspension
    tubular linear electric drive
    electric motor control
    Opis:
    This paper focuses on the design and control of an active suspension system, where a tubular linear motor is integrated into a spring damper system of a vehicle. The spring takes up the weight of the vehicle. Therefore the electric linear motor can be designed very compact as it has to provide forces to adjust the damping characteristic only. Design and construction of the active suspension system, a control strategy and validation measurements at a test bench are presented.
    Źródło:
    Archives of Electrical Engineering; 2015, 64, 4; 605-616
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Eddy current density asymmetric distribution of damper bars in bulb tubular turbine generator
    Autorzy:
    Qiu, H.
    Fan, X.
    Yi, R.
    Feng, J.
    Wu, J.
    YANG, C.
    ZHAO, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/140467.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    damper bars
    bulb tubular turbine generator
    electromagnetic field
    eddy current
    Opis:
    The major reasons that cause the damage of damper bars in the leeward side are found in this paper. It provides a route for the structure optimization design of a hydro generator. Firstly, capacity of a 24 MW bulb tubular turbine generator is taken as an example in this paper. The transient electromagnetic field model is established, and the correctness of the model is verified by the comparison of experimental results and simulation data. Secondly, when the generator is operated at rated condition, the eddy current density distributions of damper bars are studied. And the asymmetric phenomenon of the eddy current density on damper bars is discovered. The change laws of the eddy currents in damper bars are determined through further analysis. Thirdly, through the study of eddy current distributions under different conditions, it is confirmed that the stator slots and armature reaction are the main factors to affect the asymmetric distribution of the eddy current in damper bars. Finally, the studies of the magnetic density distribution and theoretical analysis revealed the asymmetric distribution mechanism of eddy current density.
    Źródło:
    Archives of Electrical Engineering; 2017, 66, 3; 571-581
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation and analysis of the loss and heat on damper bars in large tubular hydro-generator
    Autorzy:
    Liao, Y.
    Fan, Z.-N.
    Han, L.
    Xie, L.-D.
    Powiązania:
    https://bibliotekanauki.pl/articles/141222.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    loss and heat
    damper bars
    tubular hydro-generator
    electromagnetic field and temperature field
    Opis:
    In order to research the losses and heat of damper bars thoroughly, a multislice moving electromagnetic field-circuit coupling FE model of tubular hydro-generator and a 3D temperature field FE model of the rotor are built respectively. The factors such as rotor motion and non-linearity of the time-varying electromagnetic field, the stator slots skew, the anisotropic heat conduction of the rotor core lamination and different heat dissipation conditions on the windward and lee side of the poles are considered. Furthermore, according to the different operating conditions, different rotor structures and materials, compositive calculations about the losses and temperatures of the damper bars of a 36 MW generator are carried out, and the data are compared with the test. The results show that the computation precision is satisfied and the generator design is reasonable.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 1; 43-54
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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