Wound rotor induction motors are primarily used to:

Wound rotor induction motors are particularly advantageous for applications requiring precise speed control. The rotor of these motors is equipped with windings connected to external resistors or reactance, which allows for the adjustment of the rotor's slip. By altering the rotor resistance, the slip can be modified, leading to changes in motor speed. This characteristic makes wound rotor induction motors ideal for variable load conditions and processes where speed requirements can change frequently.

While factors like reducing power losses, enhancing electrical efficiency, and increasing starting torque might be relevant to other types of motors, the primary benefit and application of wound rotor induction motors centers around their ability to facilitate speed control. This capability allows them to be utilized effectively in applications such as cranes, elevators, and other machinery where variable speed is crucial for optimal performance.