wound rotor
A wound rotor is a type of electric motor rotor that features windings instead of a solid conductor. These windings are connected to external resistors or circuits, allowing for better control of the motor's speed and torque. This design is commonly used in applications requiring high starting torque and variable speed, such as in large industrial machinery.
In a wound rotor system, the rotor windings are typically connected to a three-phase power supply. The external resistors can be adjusted to change the rotor's electrical resistance, which in turn affects the motor's performance. This makes wound rotors particularly useful in applications like cranes, elevators, and pumps.