10EC73 POWER ELECTRONICS VTU Syllabus

POWER ELECTRONICS
Subject Code	: 10EC73	IA Marks	: 25
No. of Lecture Hrs/Week : 04		Exam Hours	: 03
Total no. of Lecture Hrs. : 52		Exam Marks	: 100

PART – A

UNIT - 1

Introduction, Applications of power electronics, Power semiconductor devices, Control characteristics, Types of power electronics circuits, Peripheral effects. 6 Hours

UNIT - 2

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.

6 Hours

UNIT - 3

INTRODUCTION TO THYRISTORS: Principle of operation statesanode-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.

7 Hours

UNIT - 4

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).

7 Hours

PART – B

UNIT - 5

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. 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. 6 Hours

UNIT - 7

DC CHOPPERS: Introduction, Principles of step down and step up choppers, Step down chopper with RL loads, Chopper classification, Switch mode regulators – buck, boost and buck – boost regu lators. 6 Hours

UNIT - 8

INVERTORS: Introduction, Principles of operation, Performance parameters, 1φ bridge inverter, 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.“Power Electronics, Essentials and Applications”, L Umanand, John Wiley India Pvt. Ltd, 2009.

2.“Power Electronics” , Daniel W. Hart, McGraw Hill, 2010.

3.“Power Electronics ”, V Nattarasu and R.S. Anandamurhty,

Pearson/Sanguine Pub. 2006.