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What would be the most efficient 1kw motor to use at low RPM

  1. May 29, 2016 #1
    ....Up to 300 rpm (3 phase motor) and what sort of efficiency could I expect under normal conditions with a small load? Thanks
    Last edited: May 29, 2016
  2. jcsd
  3. May 29, 2016 #2


    Staff: Mentor

    I assume you're talking a single phase motor. Too bad, three phase motors are more efficient.

    Last edited by a moderator: May 7, 2017
  4. May 29, 2016 #3
    Thanks for your reply - actually i meant to say that it is 3 phase
  5. May 29, 2016 #4
    With a brushless motor, 98% efficiency is not unheard of. It can be designed so that max efficiency operating point of the motor matches the mechanical load.
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