Torque estimation of an AC compressor

Click For Summary
SUMMARY

The discussion focuses on the torque estimation required for driving an automobile AC compressor using a Brushless DC (BLDC) motor. The calculated torque requirement is 14 Nm, derived from a power consumption of 1.46 kW (equivalent to 2 HP) at a compressor speed of 1000 RPM. Participants confirm the calculation's accuracy and affirm that 14 Nm is a reasonable torque value for a BLDC motor operating at this speed.

PREREQUISITES
  • Understanding of torque calculations in mechanical systems
  • Familiarity with Brushless DC (BLDC) motors
  • Knowledge of power consumption metrics in electrical engineering
  • Basic principles of automotive air conditioning systems
NEXT STEPS
  • Research torque requirements for various automotive applications
  • Learn about the specifications and performance of BLDC motors
  • Explore power consumption calculations for different AC compressor models
  • Investigate the integration of BLDC motors in automotive systems
USEFUL FOR

Automotive engineers, electrical engineers, and anyone involved in the design and optimization of vehicle HVAC systems.

sribalaji
Messages
1
Reaction score
0
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?
 
Engineering news on Phys.org
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)
 

Similar threads

Torque calculations for a small electric vehicle
  • · Replies 58 ·
2
Replies
58
Views
9K
Automotive Poor Man's Hydrostatic drive: power steering pump as motor?
  • · Replies 19 ·
Replies
19
Views
4K
Koenigsegg Regera - acceleration
  • · Replies 4 ·
Replies
4
Views
3K
Automotive Electronic Torque Managment in an EV
  • · Replies 7 ·
Replies
7
Views
2K
Can you help me calculate the required torque and power of this motor?
  • · Replies 8 ·
Replies
8
Views
3K
3D Printer Stepper Motor Torque Requirements Using Gear Reduction
  • · Replies 1 ·
Replies
1
Views
3K
Automotive Electric Turbocharger Questions
  • · Replies 7 ·
Replies
7
Views
7K
Rolling motion mechanics & ideal economical gearbox ratios
  • · Replies 6 ·
Replies
6
Views
2K
How can torque be converted into speed in a vehicle simulation?
  • · Replies 5 ·
Replies
5
Views
3K
Calculating CFM due to pressure difference
  • · Replies 9 ·
Replies
9
Views
8K