1. Losses, Efficiency, and Power Factor
Core losses
hysteresis and eddy-current losses in the stator and the rotor
power losses (I2R losses) in the stator windings
stator copper losses, also called stator conductor losses
ECE 441

2. Net Power Crossing the Air Gap
Power-Flow Diagram
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3. Look at Total Power Loss
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4. Useful Shaft Power Output
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5. Efficiency and Power Factor
Efficiency is the ratio of useful power out to the total power in.
Power Factor is the ratio of active power to apparent power.
ECE 441