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Power Electronics

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Power Electronics

06EC73

POWER ELECTRONICS

Subject Code: 06EC73 No. of Lecture Hrs/Week: 04 Total no. of Lecture Hrs: 52

IA Marks: 25 Exam Hours: 03 Exam Marks: 100

PART - A
Introduction, Applications of power electronics, Power semiconductor devices, Control characteristics, Types of power electronics circuits, Peripheral effects. 5 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

UNIT - 3

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. 7 Hours

CI TS

UNIT - 4

CONTROLLED RECTIFIERS: Introduction, Principles of phase controlled converter operation, 1φ fully controlled converters, Duel converters, 1 φ semi converters (all converters 5 Hours

with R & RL load).

CITSTUDENTS.IN

TU

DE

gate and base drives.

NT S. IN

UNIT - 1

6 Hours

Page 1

Power Electronics

06EC73

PART –B

UNIT - 5 COMMUTATION: 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. 7 Hours

UNIT - 7

chopper with RL loads, Chopper classification, Analysis of impulse commutated Thyristor chopper (only qualitative analysis). 8 Hours

UNIT - 8

INVERTORS: Introduction, Principles of operation,

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