Driving and braking torques controllable. Control circuit operates 7-kW, 45-lb-ft (61-N-m), three-phase, brushless dc motor in both motor and generator modes. In motor modes, energy from power source is pulse-width modulated to motor through modified "H-bridge" circuit, in generator mode, energy from motor is pulse-width modulated into bank of load resistors to provide variable braking torques. Circuit provides high-resolution torque control in both directions over wide range of speeds and torques. Tested successfully at bus voltages up to 200 Vdc and currents up to 45 A.


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    Title :

    Controller for a High-Power, Brushless dc Motor


    Contributors:

    Published in:

    Publication date :

    1987-06-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English






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