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Friday, February 18, 2011

Educational videos of Power Electronics





Download/Source url :
http://www.youtube.com/watch?v=1Auay7ja2oY&feature=player_embedded

By Prof. B.G. Fernandes, Department of Electrical Engineering,IIT Bombay.



POWER ELECTRONICS SYLLABUS :

Source :http://jntuk.edu.in
Objective :
With the advent of semiconductor devices, revolution is taking place in the power transmission distribution
and utilization. This course introduces the basic concepts of power semiconductor devices, converters
and choppers and their analysis.

UNIT – I 
POWER SEMI CONDUCTOR DEVICES
Thyristors – Silicon Controlled Rectifiers (SCR’s) – BJT – Power MOSFET – Power IGBT and their
characteristics and other thyristors – Basic theory of operation of SCR – Static characteristics – Turn on
and turn off methods- Dynamic characteristics of SCR - Turn on and Turn off times -Salient points

UNIT – II 
DEVICES AND COMMUTATION CIRCUITS
Two transistor analogy – SCR - UJT firing circuit ––– Series and parallel connections of SCR’s – Snubber
circuit details – Specifications and Ratings of SCR’s, BJT, IGBT - Numerical problems – Line
Commutation and Forced Commutation circuits.

UNIT – III 
SINGLE PHASE HALF CONTROLLED CONVERTERS
Phase control technique – Single phase Line commutated converters – Mid point and Bridge connections
– Half controlled converters with Resistive, RL loads and RLE load– Derivation of average load voltage
and current -Active and Reactive power inputs to the converters without and with Free wheeling Diode –
Numerical problems

UNIT – IV 
SINGLE PHASE FULLY CONTROLLED CONVERTERS
Fully controlled converters, Mid point and Bridge connections with Resistive, RL loads and RLE load–
Derivation of average load voltage and current – Line commutated inverters -Active and Reactive power
inputs to the converters without and with Free wheeling Diode, Effect of source inductance – Derivation of
load voltage and current – Numerical problems.

UNIT – V 
THREE PHASE LINE COMMUTATED CONVERTERS
Three phase converters – Three pulse and six pulse converters – Mid point and bridge connections
average load voltage With R and RL loads – Effect of Source inductance–Dual converters (both single
phase and three phase) - Waveforms –Numerical Problems.

UNIT – VI 
AC VOLTAGE CONTROLLERS & CYCLO CONVERTERS
AC voltage controllers – Single phase two SCR’s in anti parallel – With R and RL loads – modes of
operation of Triac – Triac with R and RL loads – Derivation of RMS load voltage, current and power factor
wave forms – Firing circuits -Numerical problems -Cyclo converters – Single phase mid point cyclo
converters with Resistive and inductive load (Principle of operation only) – Bridge configuration of single
phase cyclo converter (Principle of operation only) – Waveforms

UNIT – VII 
CHOPPERS
Choppers – Time ratio control and Current limit control strategies – Step down choppers Derivation of load
voltage and currents with R, RL and RLE loads- Step up Chopper – load voltage expression
Morgan’s chopper – Jones chopper and Oscillation chopper (Principle of operation only) Waveforms ––
AC Chopper – Problems.

UNIT – VIII 
INVERTERS
Inverters – Single phase inverter – Basic series inverter – Basic parallel Capacitor inverter bridge inverter
– Waveforms – Simple forced commutation circuits for bridge inverters – Mc Murray and Mc Murray –
Bedford inverters - Voltage control techniques for inverters Pulse width modulation techniques –
Numerical problems.

TEXT BOOKS :
1. Power Electronics – by M. D. Singh & K. B. Kanchandhani, Tata Mc Graw – Hill Publishing
company, 1998.
2. Power Electronics : Circuits, Devices and Applications – by M. H. Rashid, Prentice Hall of India,
2nd edition, 1998

REFERENCE BOOKS :
1. Power Electronics – by Vedam Subramanyam, New Age International (P) Limited, Publishers
2. Power Electronics - by V.R.Murthy , 1st edition -2005, OXFORD University Press
3. Power Electronics-by P.C.Sen,Tata Mc Graw-Hill Publishing.OK  'N'  TWITTER

Educational videos of Power Electronics Reviewed by creativeworld9 on 10:02 AM Rating: 5 Download/Source url : http://www.youtube.com/watch?v=1Auay7ja2oY&feature=player_embedd...

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