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159 / 2022-07-05 22:20:15
Influence of Keybar-slot on Torque Characteristics of Direct-Drive Permanent-Magnet Brushless Machines
PM BLDC motor; Cogging torque; Keybar-slot; High localized magnetic saturation; FEA.
Electric Machine Design and Control > Electric machine designs
Final Paper
Wenqi Fu / Beijing Institute of Aerospace Control Devices
Liu Yang / Yanshan University
    The keybar-slots are inevitable and necessary for the installation of torque motor used for CMG (Control moment gyro) for the satellite This paper investigates the influence of keybar-slot on torque characteristics of direct-drive permanent-magnet brushless DC (PM BLDC) motor. The model and specification are illustrated. Then the keybar-slot effects on torque characteristics are analyzed through finite element analysis (FEA). It shows that high localized magnetic saturation due to stator asymmetry can significantly increase cogging torque and torque ripple. An effective method has been proposed to improve the asymmetry by applying five uniformed distributed keybar-slots in the stator yoke.

 
Important Date

  • Conference Date

    Nov 03

    2022

    to

    Nov 05

    2022

  • Aug 01 2022

    Draft paper submission deadline

  • Nov 04 2022

    Registration deadline

  • Nov 05 2022

    Contribution Submission Deadline

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