Unique Rotor Construction

Wound rotor motors feature insulated rotor coils instead of rotor bars, which can accept external impedances. The rotor windings are connected to rings that make contact with carbon-composite brushes, allowing for varying resistance.

Adjustable Speed-Torque Characteristics

By connecting the brushes to a series of impedances (such as a resistor bank or liquid rheostat), the motor’s speed-torque characteristics can be adjusted. This enables high torque, minimal inrush current, and variable speeds, making wound rotor motors highly adaptable to different operational needs.

Smooth Acceleration and High Torque

These motors excel in applications requiring smooth acceleration of high-inertia loads. They are designed to maintain high starting torque while reducing electrical strain on the power system.