Engineering Tutorials

EEE-602: POWER ELECTRONICS

Unit-I

Power semiconductor Devices:

Power semiconductor devices their symbols and static characteristics

Characteristics and specifications of switches, types of power electronic circuits

Operation, steady state and switch characteristics & switching limits of Power Transistor Operation and steady state characteristics of Power MOSFET and IGBT

Thyristor – Operation V- I characteristics, two transistor model, methods of turn-on Operation of GTO, MCT and TRIAC

Unit-II

Power Semiconductor Devices(Contd)

Protection of devices.

Series and parallel operation of thyristors

Commutation techniques of thyristor

DC-DC Converters:

Principles of step-down chopper, step down chopper with R-L load Principle of step-up chopper, and operation with RL load, classification of choppers

Unit-III

Phase Controlled Converters

Single phase half wave controlled rectifier with resistive and inductive loads, effect of freewheeling diode.

Single phase fully controlled and half controlled bridge converters.

Performance Parameters

Three phase half wave converters

Three phase fully controlled and half controlled bridge converters, Effect of source impedance Single phase and three phase dual converters

Unit-IV

AC Voltage Controllers

Principle of On-Off and phase controls

Single phase ac voltage controller with resistive and inductive loads

Three phase ac voltage controllers (various configurations and comparison only)

Single phase transformer tap changer.

Cyclo Converters

Basic principle of operation, single phase to single phase, three phase to single phase and three phase to three phase cyclo converters, output voltage equation

Unit-V

Inverters

Single phase series resonant inverter

Single phase bridge inverters

Three phase bridge inverters

Voltage control of inverters

Harmonics reduction techniques

Single phase and three phase current source inverters

Text Books:

1. M.H. Rashid,“Power Electronics: Circuits, Devices & Applications”, Prentice Hall of India Ltd. ^3rd Edition,2004.

2. M.D. Singh and K.B.Khanchandani, “Power Electronics”Tata MC Graw Hill, 2005

3. V.R. Moorthy, “ Power Electronics : Devices, Circuits and Industrial Applications” Oxford University Press,2007.

Reference Books:

4. M.S. Jamil Asghar, “Power Electronics” Prentice Hall of India Ltd., 2004

5. Chakrabarti & Rai, “Fundamentals of Power Electronics &Drives”Dhanpat Rai & Sons.

6. Ned Mohan, T.M.Undeland and W.P.Robbins, “Power Electronics: Converters, Applications and Design”, Wiley India Ltd,2008.

7. S.N.Singh, “A Text Book of Power Electronics” Dhanpat Rai & Sons

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