In this study, we developed a sensorless BLM driver with a BEMF-detecting circuit, which detects the rotor position in a digital way. Through the position-feedback control immediately after the activation of the driver, and the real-time adjustment of lead angle in response to load current, we succeeded in attaining higher accuracy of position detection over a wider operating range, which improved the motor characteristics to the equivalent level to those of the motor with a position sensor. Also, for fuel pump application, high-speed start-up of the BLM within hundreds of milliseconds was successfully achieved.


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    Titel :

    Development of Sensorless Driver of 42V Brushless Motor for Cars


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2005 World Congress & Exhibition ; 2005



    Erscheinungsdatum :

    11.04.2005




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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