06EC73 - POWER ELECTRONICS |
PART – A |
UNIT – I |
Introduction, Applications of power electronics, Power semiconductor
devices, Control characteristics, Types of power electronics circuits,
Peripheral effects. |
UNIT – II |
POWER TRANSISTOR: Power BJT’s, Switching characteristics,
Switching limits, Base derive control, Power MOSFET’s, Switching
characteristics, Gate drive, IGBT’s, Isolation of gate and base drives. |
UNIT – III |
INTRODUCTION TO THYRISTORS: Principle of operation states
anode-cathode characteristics, Two transistor model. Turn-on Methods,
Dynamic Turn-on and turn-off characteristics, Gate characteristics, Gate
trigger circuits, di / dt and dv / dt protection, Thyristor firing circuits. |
UNIT – IV |
CONTROLLED RECTIFIERS: Introduction, Principles of phase
controlled converter operation, 1φ fully controlled converters, Duel
converters, 1 φ semi converters (all converters with R & RL load). |
PART – B |
UNIT – V |
Thyristor turn off methods, natural and forced commutation, self
commutation, class A and class B types, Complementary commutation,
auxiliary commutation, external pulse commutation, AC line commutation,
numerical problems. |
UNIT – VI |
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. |
UNIT – VII |
DC CHOPPERS: Introduction, Principles of step down and step up
choppers, Step down chopper with RL loads, Chopper classification, Analysis of impulse commutated Thyristor chopper (only qualitative
analysis). |
UNIT – VIII |
INVERTORS: Introduction, Principles of operation, Performance
parameters, 1φ bridge inverter, voltage control of 1φ invertors, current source
invertors, Variable DC link inverter. |
REFERENCE |
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 Rmk Sinha New age international (P) ltd reprint 1999.
2. “Power Electronics” - Cynil W. Lander 3rd edition, MGH 2003. |
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