Electrical Engineering ⇒ Topic : Power stages in an induction moter

POWER STAGES IN AN INDUCTION MOTOR

• Stator iron loss (consisting of eddy current and hysteresis losses) depends on the supply frequency and the flux density in the iron core. It is practically constant.
• Rotor iron loss is negligible because the frequency of rotor currents under normal running conditions is always small.
• Total rotor copper loss = 3I²₂R₂ (where I₂ and R₂ are current and resistance of the rotor respectively).