7EE4 ELECTRIC DRIVES AND THEIR CONTROL
 

1. CHARACTERISTICS OF ELECTRIC MOTORS: Characteristic of dc motors, three phase induction motors and synchronous motors.

2. DYNAMICS OF ELECTRIC DRIVES: Fundamental torque equations, speed-torque conventions and multiquadrant operation, equivalent values of drive parameters, components of load torques, nature and classification of load torques, calculation of time and energy loss in transient operation, steady state stability, load equalization.

3. CONTROL OF AC DRIVES: Induction motor drives: Basic principle of operation, stator voltage control, rotor voltage control, frequency control, voltage and frequency control, current control. Voltage, current and frequency control. Close-loop control. Synchronous motor drive: Cylindrical rotor, salient pole, reluctance, permanent magnet and switch reluctance motors. Close loop control of synchronous motors. Brushless de and ac drives.

RECOMMENDED BOOKS:

1. G K Dubey Fundamentals of Electrical Drives,Narosa Publishing House, New Delhi,1995.

2. V Subrahmanyam:Thyristor control of electric Drives,Tata McGraw Hill, New Delhi, 1988.

3. V Subrahmanyam:Electric Drives-Concepts and Applications,Tata McGraw Hill,New Delhi.

4. S K Pillai:A first course on electrical Drives,Wiley Eastern limited,India.

5. B K Bose:Power electronics and A. C. Drives,Prentice Hall.