Power BJT- construction, Working, static and switching charateristics
Power MOSFET- construction, Working, static and switching charateristics
IGBT- construction, Working, static and switching charateristics, Comparison of Power BJT, Power MOSFET and IGBT
Firing circuit of Thyristor- various triggering circuits
Turn of methods (Commutation) of SCR- Class A, B, C, D, E and class F commutation
Driver circuits-Power BJT,Power MOSFET, IGBT
Thyristor protection circuits, Snubber design of Thyristor
Transistor Protection circuits-Turn-on and Turn-off snubber, Thyristor voltage ratings
Thyristor current rating ond other ratings, series connection of SCR, Unequal voltage distribution in static and dynamic conditions
Static and dynamic equivalent circuit, Design equations, solved problems, Parallel connection of SCRs and effects of unequal current distribution
Voltage and Current ratings of Transistors, Device selection
Unit 2- Half wave phase controlled rectifier with R Load
Half wave controlled rectifier with RL load(with and without freewheeling diode)
Half wave controlled rectifier with RLE load
Single phase semi converter - R load
Single phase semi converter - RLE load, inherent freewheeling
Single phase full converter -mid point and bridge type, rectification mode
Single phase full converter (bridge type)- Inversion mode
solve dproblems in single phase converters
Additional problems, Performance parameters of semi converter
Performance parameters of full converter, solving problems in semi converter and full converter
Effect of source inductance - single phase full converter
Three phase half wave controlled rectifier
Three phase semi converter
Three phase full converter
Single phase dual converter- circulating and non circulating current mode
Numerical examples in three phase converter, Demo for developing power electronic circuits in MATLAB/SIMULINK
Unit 3- DC chopper-Principle of operation – Control strategies (TRC,CLC), Step up and step down chopper
Ste up/step down choppwe, Numerical problems in chopper circuits
Chopper configurations- one quadrant, two quadrant choppers
Four quadrant chopper, Switched mode power converters- Buck converter
Analysis of Buck converter- Problem
Boost regulator- operating modes, design equations, problem
Buck Boost regulator- operating modes, design equations, problem
Cuk converter- operating modes
Design equations of Cuk converter, Forward converter- operating modes and equations
Flyback converter- operating modes and equations,Push pull converter, Ac voltage controllers- control strategies
On-off control(Integral cycle control), Numericsl problems, Phase angle control-single phase half wave ac voltage controller
Single phase full wave AC voltage controller with R load-various configurations
Single phase full wave AC voltage controller with RL load, gate pulse requirements, Numerical problems
Three phase half wave AC voltage controller
Three phase full wave AC voltage controller
Three phase bidirectional delta connected controller, Step up cycle converter- mid point type
Step up cyclo converter-Bridge type, Step down cyclo converter- mid point and bridge type
Unit 4- Single phase half bridge and full bridge Voltage Source Inverter (VSI)- R, RL, RLC overdamped and RLC underdamped loads
Three phase voltage source inverter-180 degrees and 120 degrees conduction mode
Single phase and Three phase current source inverter, Inverter voltage control (external voltage control)- output AC voltage control, input DC voltage control
Inverter voltage control (internal control)- Analysis of Single PWM, Multiple PWM
Sinusoidal PWM, Solved problems in VSI and PWM Inverter
Various harmonic reduction techniques
Space Vector Modulation
Revision, Applications, Discussion of Part -C questions
