Quote:
Originally Posted by oil pan 4
All the losses in the alt are from hysteresis and drag from the fan
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There are MANY other losses:
Bearing friction
Rotor current
Diode losses
Regulator losses
Stator losses (resistive)
Rotor losses (resistive)
Magnetic losses
If the fan is such a big loss, don't spin it. Alternator delete vs disconnect. Obviously NOT a huge loss from the fan or everyone would be deleting instead of just disconnecting. The fan would not be required if the resistive and conversion losses were not so bad.