Quote:
Originally Posted by ToddF
Running the math, the quoted max power actually equals the max current x max voltage. Derating to the 12 V on a FIRST robot (nominally) gives 792 Watts.
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792 is the electrical power
input to the motor, not the mechanical power
output.
For reference, the brushed motors used in FRC all have less than 50% efficiency at max power. Brushless motors share many of the same losses that brushed motors have, like windage, bearing friction, eddy currents, winding resistance, etc etc. I doubt that brushless motors are anywhere near 100%.
Sensorless brushless motors cannot operate at high torque at low speeds because of commutation issues.