8EE2 ELECTRIC DRIVES AND THEIR CONTROL

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)