Brushless machine technology provides a new and feasible option for high-power actuation applications historically serviced by hydraulic devices. Two types of brushless permanent magnet machines exist: the brushless DC machine and the permanent magnet synchronous machine. While the brushless DC machine is ideally suited for operation with a 'two-phase on' drive, the permanent magnet synchronous machine is ideally suited for operation with a 'three-phase on' drive. Within this paper, the impact of the torque ripple induced by using a 'two-phase on' drive with the permanent magnet synchronous machine is examined for viability, though not compared with the 'three-phase on' drive. The focus application is thrust vector control of the Space Shuttle Main Engines, and test results indicate that such operation is acceptable.


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    Title :

    'Two-phase on' drive operation in a permanent magnet synchronous machine electromechanical actuator


    Contributors:

    Published in:

    Publication date :

    1999


    Size :

    6 Seiten, 12 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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