EX-502 · Power Electronics/Official Syllabus
Power Electronics (EX-502) - Official Syllabus
1
Unit 1
Power Electronic Devices and SCR Characteristics
- Advantages and application of power electronic devices characteristics
- Symbol & application of power diodes, power transistors, GTO, Triac, Diac, Power MOSFET, IGBT, LASCR, Fast recovery diode, schottey diode MCTs
- Principle of operation of SCR
- Two transistor analogy
- brief idea of construction of SCR
- Static characteristics of SCR
- Condition of turn on & off of SCR Gate characteristics
- Method for turning on of SCR
- Turnoff methods, different commutation techniques (Class A,B,C,D,E, & F Commutation)
- firing of SCR, Resistance firing Ckt, Resistance capacitance firing circuit, UJT firing cut, and ramp triggering, firing for 3-Φ circuit
- SCR rating & protection of SCR over voltage, Over current, Superior firing, Design of snubber circuit and protection of gate of SCR, heating, cooling & mounting of SCR series and parallel operation of SCR
- String efficiency & problem associated with series and parallel operation of SCR
2
Unit 2
Phase Controlled Rectifiers
- Operation and analysis of single phase (Half wave & Full Wave) and multiphase (Three Phase)uncontrolled and controlled rectifier circuit with resistive, resistive & inductive load (continuous & non continuous conduction, FW small & very large inductive loads) and RLE loads
- Estimation of average load voltage and load current for above rectifier circuits active and reactive power input
- Effect of freewheeling diode and source inductance on performance of these rectifier circuits
- Comparison of mid-point & Bridge rectifier circuits
3
Unit 3
Inverters
- Series and parallel inverter
- Voltage source & current source inverter
- Single phase and three phase bridge inverter
- Self-cumulated inverters
- Mc- murray& MC murray bed ford inverters
- Voltage control of single phase and three phase bridge inverter
- Harmonics & their reduction techniques
4
Unit 4
Choppers
- Principle of chopper operation
- Various control strategies in chopper
- Step up & step-up/step down choppers
- chopper configuration (Type A,B, C,D, & E)
- Steady state analysis of chopper circuits
- Current & voltage commutation of chopper circuits Jones & Morgens chopper
5
Unit 5
Cycloconverters and AC Voltage Controllers
- Single phase (midpoint & bridge configuration) and three phase cyclo convertor configuration and operating principles
- AC voltage controllers (using SCRs &Traics) single phase full wave controller with R and RL load
- Estimation of RMS load voltage, RMS load current and input power factor
- three phase AC voltage controller (Without analysis)
- Dual converter
- Switched mode voltage regulator buck, Boost, Buch & Boost, Ck regulators
Laboratory Experiments
- VI Characteristics Of SCR
- VI Characteristics Of DIAC
- VI Characteristics Of BJT
- Characteristics Of TRIAC
- VI Characteristics Of MOSFET
- Transfer Characteristics Of MOSFET
- Output Characteristics Of IGBT
- Transfer Characteristics Of IGBT
- Single Phase SCR Half Controlled Converter With R Load
- 1φ Scr Fully Controlled Converter With R-Load
- Study Of 3φ SCR Half Controlled Converter
- Study Of 3φ SCR Fully Controlled Converter
- Study Of Classes Of Commutation A,B,C,D,E,F.
Reference Books
- Power Electronics Circuits, Devices and Applications — M.H. Rashid — Pearson 2 Education, Singapore — 1993
- An Introduction to transistor and their application — M Ramsmoorthy — Affiliated East-West Press
- Power Electonics — P.C. Sen — TMH
- Power Electronics — M.D. Singh, K.B. Khanchandani — TMH, Delhi — 2001
- Fundamental of Power Electronics and Drives — Chakravarti A. — Dhanpat Ray & Co.
- Power Electonics — Dr. P.S. Bhimbhra — Khanna Pub.
- Power Electronics — Vedam Subramanyam — New Age International — Revised II ed. 2006
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