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    Design and Prototyping of Magnetic Gearboxes Test Stand

    , M.Sc. Thesis Sharif University of Technology Mohammadi, Kaivan (Author) ; Durali, Mohammad (Supervisor)
    Abstract
    There are two ways for quality control testing of power transmission systems in various industries. A method of testing the specific positions of power transmission, and final testing (Automotive road tests), respectively. In various stages of design, manufacturing and quality control components, power transmission systems, require detailed information on the performance of parts. It's a special place for each transmission experiment designed and manufactured. Gearbox as an important component of the transmission of this issue is no exception. Magnetic gearbox has a new generation of power transmission systems in the last decade of the optimization is presented. In recent years, several... 

    A combined model flux observer for vector control of traction asynchronous motors

    , Article 7th International Conference on Power Electronics and Drive Systems, PEDS 2007, Bangkok, 27 November 2007 through 30 November 2007 ; 2007 , Pages 1295-1300 ; 1424406455 (ISBN); 9781424406456 (ISBN) Tahami, F ; Chini Foroosh, S ; Sharif University of Technology
    2007
    Abstract
    Vector control induction motor drives are particularly sensitive to the variation of motor parameters. As a consequence, the field orientation is missed, leading to substantial degradation of performance. The performance of traction motors can be even more degraded by the substantial core loss due to their high supply frequency. In this paper, a flux observer using combined voltage and current model is presented. The influence of the core loss resistance is considered in motor models. This control system is robust against simultaneous variations of the stator resistance, rotor resistances, as well as the mismatch of the equivalent stator core-loss resistance, yielding a globally stable...