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Torque estimation of an AC compressor

  1. Jan 30, 2013 #1
    Hi all,
    I'm planning to drive the automobile ac compressor via a BLDC motor instead of IC engine. This is only when the vehicle is parked. Now, I'm trying to determine torque requirement. Is my calculation correct?
    Power consumption: 1.46 kW
    compressor speed : 1000rpm
    = 14Nm

    Is this value too high to be driven by a motor for a speed of 1000rpm?
  2. jcsd
  3. Jan 31, 2013 #2


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    Gold Member

    Well, 14 N-m seems right.
    You have a 1.46kW (2 HP) motor BLDC in your possession?
  4. Jan 31, 2013 #3


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    Staff: Mentor

    You did the calculation correctly (though a little roundabout)
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