304194: Power Devices & Circuits

Unit I Study of Power Devices (06 Hrs.)
Construction, VI characteristics (input, output and transfer if any), switching characteristics of SCR, GTO,
Power MOSFET and IGBT, Performance overview of Silicon, Silicon Carbide & GaN based MOSFET and
IGBT, various repetitive and non-repetitive ratings of SCR, GTO , Power MOSFET & IGBT and their
significance, requirement of a typical triggering / driver (such as opto isolator) circuits for various power
devices, importance of series and parallel operations of various power devices (no derivation and numerical).

Unit II AC to DC Power Converters (06 Hrs.)
Concept of line & forced commutation, Single phase Semi & Full converters using SCR for R and R-L loads
and its performance analysis and numerical, Effect of source inductance, Significance of power factor and its
improvement using PWM based techniques, Three phase Full converters using SCR for R load and its
performance analysis, Single Phase PWM Rectifier using IGBT, Three Phase Controlled Rectifier Using IGBT,
Difference between SCR based conventional rectifiers and IGBT based rectifiers.

Unit III DC to AC Converters (06 Hrs.)
Single phase half and full bridge square wave inverter for R and R-L load using MOSFET / IGBT and its
performance analysis and numerical, Cross conduction in inverter, need of voltage control and strategies in
inverters, classifications of voltage control techniques, control of voltage using various PWM techniques and
their advantages, concept and need of harmonic elimination / reduction in inverters, Three Phase voltage source
inverter for balanced star R load with 120 and 180 degree mode of operation, device utilization factor,
Advanced Converterslike matrix inverter, multi-level inverters and their topologies and its driver circuits (no
derivation and numerical).

Unit IV DC to DC Converters (06 Hrs.)
Classification of choppers, Step down chopper for R and RL load and its performance analysis, Step up chopper,
various control strategies for choppers, types of choppers (isolated and non isolated) such as type A, B, C, D &
E, switch mode power supply (SMPS) viz buck, boost and buck-boost, Fly back, Half and full Bridge isolated
and non-isolated interleaved bidirectional topologies, and concept of integrated converter and design of LM3524
based choppers, concept of maximum power point tracking (MPPT).

Unit V Power Devices Protection and Circuits (06 Hrs.)
Over voltage, over current, di/dt and dv/dt protection circuits and their design, Various cooling techniques and
heat sink design, Resonant converters such as Zero current switching (ZCS) and Zero voltage switching (ZVS),
Electromagnetic interference such as radiated and conducted EMI, Difference between EMI and EMC, EMI
sources and soft switching and minimizing / shielding techniques for EMI, Various EMI and EMC standards,
Importance of isolation transformer.

Unit VI Power Electronics Applications (06 Hrs.)
AC Voltage Controller using IGBT & SCR, Fan Regulator, Electronic Ballast, LED Lamp driver, DC motor
drive for single phase separately excited dc motor, BLDC motor drive, Variable voltage & variable frequency
three phase induction motor drive, On-line and Off- line UPS, study of various selection criteria and
performance parameters of batteries in battery operated power systems, battery charging models and modes for
EVs, Architecture of EVs battery charger, PFC stage circuit topologies with details of Full-bridge boost rectifier
and Full-bridge interleaved for EV battery charger, case study of power electronics in electric vehicle and
photovoltaic solar system

Text Books:
1. M. H. Rashid, “Power Electronics Circuits Devices and Applications”, PHI,4th Edition 2017
New Delhi.
2. M. D. Singh and K. B. Khanchandani, “Power Electronics”, TMH, 2nd Edition 2006.

Reference Books:
1. Bogdan M. Wilamowski, J. David Irwin, “The Power Electronics and Motor Drives Handbook”, CRC
Press, 1
st Edition, 2011. ; eBook: ISBN 9780429165627, 2019.

2. Muhammad H. Rashid , “Power Electronics Handbook”, Academic Press, 2nd Edition, 2001
3. Ned Mohan, T. Undeland & W. Robbins, “Power Electronics Converters Applications and Design,
John Willey & sons, Singapore, 2

nd Edition Oxford University Press, New Delhi, 2005

4. Ali Emadi Alireza Khaligh Zhong Nie Young Joo Lee, “Integrated Power Electronic Converters and
Digital Control”, CRC Press, 1st Edition.
5. Vinod Kumar Khanna “Insulated Gate Bipolar Transistor IGBT Theory and Design”, John Wiley &
Sons, Illustrated Edition.
Print ISBN:9780471238454; Online ISBN:9780471722915, DOI:10.1002/047172291.
6. L. Ashok Kumar, S. Albert Alexander and Madhuvanthani Rajendran, “Power Electronic Converters for
Solar Photovoltaic Systems”, Elsevier, 1

st Edition, 2020.