What are the main types of rotor construction in induction motors?
1 Answer
Induction motors, also known as asynchronous motors, are widely used in various applications due to their robustness and simplicity. The rotor construction in induction motors can be categorized into the following main types:
Squirrel Cage Rotor: This is the most common type of rotor construction in induction motors. It consists of a cylindrical core made of stacked steel laminations with evenly spaced conductive bars or "squirrel cage" bars embedded in the slots. These bars are typically made of aluminum or copper. The ends of the bars are short-circuited by end rings. When the stator windings are energized with alternating current, they create a rotating magnetic field. This field induces currents in the squirrel cage bars, which, in turn, produce a torque that drives the rotor to turn.
Wound Rotor (Slip Ring Rotor): In this type of rotor construction, the rotor winding consists of insulated coils wound around the rotor core. The rotor winding terminals are brought out through slip rings and brushes,
Squirrel Cage Rotor: This is the most common type of rotor construction in induction motors. It consists of a cylindrical core made of stacked steel laminations with evenly spaced conductive bars or "squirrel cage" bars embedded in the slots. These bars are typically made of aluminum or copper. The ends of the bars are short-circuited by end rings. When the stator windings are energized with alternating current, they create a rotating magnetic field. This field induces currents in the squirrel cage bars, which, in turn, produce a torque that drives the rotor to turn.
Wound Rotor (Slip Ring Rotor): In this type of rotor construction, the rotor winding consists of insulated coils wound around the rotor core. The rotor winding terminals are brought out through slip rings and brushes,