As the application of solid state electronics in the control of electrical systems is increasing rapidly, the 2nd half of this course provides reasonable knowledge of power electronics including control of AC/DC motors, synchro-servo system etc. concepts and applications of Programmable Logic Controllers (PLC) have also been included.

1. POWER DIODES & THYRISTORS.                                                 8 Hrs.
1.1 Construction, ratings and characteristics of power diodes
1.2 Series & parallel operation of power diodes
1.3 Review of SCR, its characteristics
1.4 SCR phase control
1.5 Series & parallel operation of SCR’s
1.6 IGBT as a switch, its characteristics and operation through gate drivers
2. CONTROLLED RECTIFIERS (1-PHASE & 3-PHASE)                     10 Hrs.
2.1 Basic controlled rectifier circuits
2.2 Forced commutated controlled rectifier circuit (1-Phase & 3-Phase)
2.3 Naturally commutated controlled rectifier circuit (1- Phase & 3-Phase)
3. INVERTERS.                                                                                   10 Hrs.
3.1 1-Phase full-wave inverter circuit
3.2 3-phase full-wave bridge circuit as a line-commutated invertor
3.3 Four quadrant control
4. CONTROL OF DC & AC MOTORS.                                                   12 Hrs.
4.1 DC motor speed control system
4.2 3-phase full-wave controlled rectifier circuit to control DC motors
4.3 1-phase full-wave controlled rectifier circuit to control DC motor
4.4 Introduction to speed control of induction motors
4.5 SCR cyclo-converter.
4.6 Open-loop & closed-loop induction motor speed control.
5. SYNCHRO-SERVO SYSTEMS.                                                            8 Hrs.
5.1 Synchro-generator and synchro-motor
5.2 Differential synchro
5.3 AC & DC servo-mechanism
5.4 Servo motors, characteristics & uses

6. PROGRAMMABLE LOGIC CONTROLLER (Dedicated PLC’s.)           8 Hrs.
6.1 Introduction to PLC’s
6.2 ladder logic inputs, ladder logic outputs, symbols
6.3 Input and output modules
6.4 Relays, Timers and counters
6.5 Modes of operation
6.6 Ladders and Rungs
6.7 Multiple contacts
6.8 Use of A/D and D/A converters
6.9 Programming and operation of simple motor control circuits for given ladder logic.
(Computer Software Control.) 8 Hrs.
6.10 Ladder relay instructions
6.11 Ladder timer instructions
6.12 Ladder counter instructions