wound-rotor induction motor
Quick Summary
A wound-rotor induction motor is a type of electric motor that features a rotor with windings, similar to those in the stator. These windings are connected to slip rings, allowing for external electrical connections via carbon brushes.1
This design enables secondary circuit adjustments not possible in squirrel-cage induction motors. A key advantage is the ability to achieve high starting torque without drawing excessive current. By adding external resistors to the slip rings, some speed control can be achieved for specific mechanical loads, though efficiency decreases at lower speeds due to resistance losses. More advanced systems can recover rotor power and feed it back to the supply, providing efficient speed control.21
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