Torque estimation of an AC compressor

AI Thread Summary
The discussion focuses on estimating the torque required to drive an automobile AC compressor using a BLDC motor while the vehicle is parked. The power consumption is noted as 1.46 kW, with a compressor speed of 1000 rpm, leading to a calculated torque of 14 Nm. Participants confirm that this torque value is appropriate for the specified motor power. The calculations are deemed correct, although one participant suggests a more straightforward approach. Overall, the torque requirement appears manageable for a 1.46 kW BLDC motor.
sribalaji
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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
torque=5252*hp/1000
= 14Nm

Is this value too high to be driven by a motor for a speed of 1000rpm?
 
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Well, 14 N-m seems right.
You have a 1.46kW (2 HP) motor BLDC in your possession?
 
You did the calculation correctly (though a little roundabout)
 

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