Mg university B.tech syllabus S5 Electrical & Electronics
Module 1
Power Semiconductor Devices: Power diodes, Power Transistors, Power MOSFET,
IGBTs, Diac, Triac, GTOs – static characteristics and principle of operation.
SCRs: Static and dynamic characteristics – two transistor analogy – gate
characteristics
Module 2
SCR ratings and specifications - Device protection – heat sink selection – series
and parallel operation of SCRs.
SCR Triggering circuits – R, RC, UJT triggering circuits – diac triggering circuit –
single pulse, continuous pulse carrier frequency triggering – pulse transformer –
amplification and isolation of SCR gate pulses.
Module 3
Phase control: single phase half wave controlled rectifier circuit – single phase full
wave controlled rectifier circuit – R, RL Loads – free wheeling – half controlled and
fully controlled bridge with continuous and steady current – Expression for output
voltage – wave forms – active and reactive power – effect of source inductance –
line commutated inverter – 3-phase half wave and full wave controlled rectifier –
expression for output voltage.
Module 4
Commutation of SCRs – classification of commutation schemes
Inverters: series and parallel inverters – single phase and three phase bridge
inverters (schematic diagrams and wave forms only) – Mc Murray Inverter – Basic
Principle of PWM.
Module 5
Choppers: Basic principle – Classification – Type A, B, C, D and E. (Analysis not
required)
Basic Principle of Cycloconverters.
Control Circuits: Generation of control pulses – block schematic of firing circuits –
linear and cosine comparison – Digital firing scheme.
References
1. Power Electronics – Circuits, Devices and Applications, M.H. Rashid,
PHI/Pearson Edn.
2. Power Electronic Systems – Theory and Design, Jai P. Agarwal, Pearson
Education Asia, LPE
3. Power Electronics, P.S Bhimbhra, Khanna publ., New Delhi
4. A Text Book of Power Electronics, S.N Singh, Dhanpat Rai & Co, 2000
5. Power Electronics – Converters, Applications and Design, Mohan N,
Undeland T.M and Robbins W.P, John Wiley -1989
6. Power Electronics, Harish C. Rai, Galgotia Publ.
http://mgusyllabus.
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