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10EC73
How to study this subject
PART-A
UNIT-1Introduction, Applications of power electronics, Power semiconductor devices, Controlcharacteristics, Types of power electronics circuits, Peripheral effects.5 Hours
UNIT-2POWER TRANSISTOR:Power BJT’s, switching characteristics, Switching limits, Basederive control, Power MOSFET’s, switching characteristics, Gate drive, IGBT’s, Isolation ofgate and base drives.6 Hours
UNIT-3INTRODUCTION TO THYRISTORS:Principleof operation states anode-cathodecharacteristics, two transistor model. Turn-on Methods, Dynamic Turn-on and turn-offcharacteristics, Gate characteristics, Gate trigger circuits, di / dt and dv / dt protection,Thyristor firing circuits.7 Hours
UNIT-4CONTROLLED RECTIFIERS:Introduction, Principles of phase controlled converteroperation, 1φ fully controlled converters, Duel converters, 1 φ semi converters (all converterswith R & RL load).5 HoursPower Electronics10EC73SJBIT/Dept of ECE
PART–B
UNIT-5 COMMUTATION:Thyristor turn off methods, natural and forced commutation, selfcommutation, class A and class B types, Complementary commutation, auxiliarycommutation, external pulse commutation, AC line commutation, numerical problems.7 Hours
UNIT-6 AC VOLTAGE CONTROLLERS:Introduction, Principles of on and off control,Principles of phase control, Single phase controllers with restive loads and Inductive loads,numerical problems.7Hours
UNIT-7 DC CHOPPERS:Introduction, Principles of step down and step up choppers, Step downchopper with RL loads, Chopper classification, Analysis of impulse commutated Thyristorchopper (only qualitative analysis).8 Hours
UNIT-8 INVERTORS:Introduction, Principles of operation, Performance parameters, 1φ bridgeinverter, voltage control of 1φ invertors, current source invertors, Variable DC link inverter.7 Hours
TEXT BOOKS:
1.“Power Electronics”-M. H.Rashid 3rd edition, PHI / Pearson publisher 2004.2.“Power Electronics”-M. D. Singh and Kanchandani K.B. TMH publisher, 2nd Ed. 2007.REFERENCE BOOKS:1.“Thyristorized Power Controllers”-G. K. Dubey S. R. Doradla, A. Joshi and RmkSinha Newage international (P) ltd reprint 1999.2.“Power Electronics”-Cynil W. Lander 3rd edition, MG
P
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