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PMAC vs BLDC

Discussion in 'Electronic Design' started by Mook Johnson, Mar 12, 2007.

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  1. Mook Johnson

    Mook Johnson Guest

    I have a project were they remote team is requesting PMAC motors and
    sinusoidal drive. Theire reason for this over a brushless DC is that there
    is more power avaialbe because the phases at any given moment, all three
    phases are connected to Vbus or Gnd. BLDC in Bang-bang mode only appies two
    phases at a time and watched the third one for BEMF.

    The only difference I know of is the torque ripple in BLCD compared to PMAC
    but in this application that wouldn't matter.

    Is there any validity to there being more power being avialable from a PMAC
    than a BLDC give the same case size and bus voltage?
     
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