EE504-POWER ELECTRONICS |
Introduction: |
Concept of power electronics, application of power electronics, uncontrolled converters, advantages and
disadvantages of power electronics converters, power electronics systems, Power diodes, Power transistors,
Power MOSFETS, IGBT.
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PNPN devices: |
Thyristor, brief description of members of Thyristor family with symbol, V-I characteristics and
applications. Two transistor model of SCR, SCR turn on methods, switching characteristics, gate
characteristics, ratings, SCR protection, series and parallel operation, gate triggering circuits. Different
commutation techniques of SCR. |
Phase controlled converters: |
Principle of operation of single phase and three phase half wave, half controlled, full controlled converters
with R, R-L and RLE loads, effect of free wheeling diodes and source inductance on the performance of
converters. External performance parameters of the converters, techniques of power factor improvement,
Single phase and three phase dual converters, Resonant converters.
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Inverters: |
Definition, classification of inverters based on nature of input source, methods of commutation and
connections. Principle of operation with R and R-L loads, three phase full bridge inverters, performance
parameters of inverters, methods of voltage control and harmonic reduction of inverters.
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AC controllers: |
Principle of on-off and phase control, single phase and three phase controllers with R and R-L loads.
Principle of operation of Cycloconverters, circulating and non circulating mode of operation, single phase
to single phase step up and step down Cycloconverters, three phase to single phase Cycloconverters, three
phase to three phase Cycloconverters. |
Applications: |
Speed control of AC and DC motors, HVDC transmission, static circuit breaker, UPS, static VAR
controller.
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Text Books: |
1. Power Electronics, M.D. Singh and K.B. Khanchandani, Tata Mc Grawhill, 2007.
2. Power Electronics, V.R. Moorthi, Oxford, 2005
3. Power Electronics, M.H. Rashid, Pearson Education, 3rd edition.
4. Power Electronics, P.S. Bhimra, Khanna Publishers, Third edition
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Reference Books: |
1. Modern Power Electronics & AC drives, B.K. Bose, Prentice Hall
2. Element of Power Electronics, Phillip T Krein, Oxford, 2007
3. Power Electronic systems, J.P. Agarwal, Pearson Education, 2006
4. Power Electronics, M.S. Jamal Asgha, PHI, 2007
5. Analysis of Thyristor power conditioned motor, S.K. Pillai, University press.
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