August 2011
Beginner
724 pages
20h 32m
English
Basic principle of a three-phase induction motor
Constructional details
Rotating magnetic field
Synchronous speed
Slip speed
Rotor-equivalent circuit
Rotor current
Rotor frequency
Power-flow diagram
Torque
Torque-slip characteristics
Effect of change of rotor circuit resistance on torque-slip characteristics
Starting torque
Condition for maximum torque
Starting
Speed control
Losses
Efficiency
Applications
Three-phase induction motors are used in many industrial applications such as a drive motor. These motors are very rugged, and hence there is virtually no maintenance required. Only three-phase supply is required for the stator. No supply is to be provided to the rotor. ...