Contents

• Unit 1. Dynamics of Electric Drives: Fundamental torque equations, speed-torque conventions and multiquardant operation, equivalent values of drive parameters, nature and classification of load torques, steady state stability, load equalization, close loop configurations of drives.

   

  Unit 2. DC Drives: Speed torque curves, torque and power limitation in armature voltage and field control, Starting, Braking-Regenerative braking, dynamic braking and plugging. Speed Control-Controlled rectifier fed DC drives, Chopper controlled DC drives.

   

  Unit 3. Induction Motor Drives-I: Starting, Braking-Regenerative braking, plugging and dynamic braking. Speed Control-Stator voltage control, variable frequency control from voltage source, Voltage Source Inverter (VSI) control.

   

  Unit 4. Induction Motor Drives-II: Variable frequency control from current source, Current Source Inverter (CSI) control, Cycloconverter control, Static rotor resistance control, Slip Power Recovery-Stator Scherbius drive, Static Kramer drive.

   

  Unit 5. Synchronous Motor Drive: Control of synchronous motor-Separately controlled and VSI fed self-controlled synchronous motor drives. Dynamic and regenerative braking of synchronous motor with VSI. Control of synchronous motor using Current Source Inverter (CSI).