power electronics iii b.tech i semester mr.sk · ac voltage controllers – single phase two...
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LECTURE NOTES
ON
POWER ELECTRONICS
III B.Tech I Semester
Mr.SK.WahabAssistant Professor
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
CHADALAWADA RAMANAMMA ENGINEERING COLLEGERenigunta Road, Chadalawada Nagar, Tirupati-517 506, A.P
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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPURB.Tech. III-I Sem.
(13A02503) POWER ELECTRONICS
UNIT I :POWER SEMI CONDUCTOR DEVICESSemiconductor Power Diodes, Thyristors – Silicon Controlled Rectifiers (SCR’s) – TRIACs, GTOs -Characteristics and Principles of Operation and other Thyristors – Classification of Switching DevicesBased on Frequency and Power Handling Capacity-BJT – Power Transistor - Power MOSFET – PowerIGBT -– Basic Theory of Operation of SCR – Static Characteristics – Turn On and Turn Off Methods-Dynamic Characteristics of SCR - Two Transistor Analogy – Triggering Circuits––– Series and ParallelConnections of SCR’s – Snubber Circuits – Specifications and Ratings of SCR’s, BJT, IGBT.UNIT II :PHASE CONTROLLED CONVERTERSPhase Control Technique – Single Phase Line Commutated Converters – Mid Point and BridgeConnections – Half Controlled Converters, Fully Controlled Converters with Resistive, RL Loads andRLE Load– Derivation of Average Load Voltage and Current – Line Commutated Inverters -Active andReactive Power Inputs to the Converters without and with Free Wheeling Diode, Effect of SourceInductance – Numerical Problems.Three Phase Line Commutated Converters – Three Pulse and Six Pulse Converters – Mid Point andBridge Connections - Average Load Voltage with R and RL Loads – Effect of Source Inductance–DualConverters (Both Single Phase and Three Phase) - Waveforms –Numerical Problems.UNIT III :CHOPPERSCommutation Circuits – Time Ratio Control and Current Limit Control Strategies – Step Down and Stepup Choppers Derivation of Load Voltage and Currents with R, RL and RLE Loads- Step Up Chopper –Load Voltage Expression– Problems.UNIT IV :INVERTERSInverters – Single Phase Inverter – Basic Series Inverter – Basic Parallel Capacitor Inverter BridgeInverter – Waveforms – Simple Forced Commutation Circuits for Bridge Inverters – Single Phase Halfand Full Bridge Inverters-Pulse Width Modulation Control-Harmonic Reduction Techniques-VoltageControl Techniques for Inverters – Numerical Problems, Three Phase VSI in 1200 And 1800 Modes ofConduction.UNIT V :AC VOLTAGE CONTROLLERS & CYCLO CONVERTERSAC Voltage Controllers – Single Phase Two SCR’s in Anti Parallel – With R and RL Loads – Modes ofOperation of Triac – Triac with R And RL Loads – Derivation of RMS Load Voltage, Current and PowerFactor Wave Forms – Firing Circuits -Numerical Problems - Thyristor Controlled Reactors; SwitchedCapacitor Networks.Cyclo Converters – Single Phase Mid Point Cyclo Converters With Resistive and Inductive Load(Principle of Operation only) – Bridge Configuration Of Single Phase Cyclo Converter (Principle ofOperation only) – WaveformsText Books:1. Fundamentals of Power Electronics – by Robert Erickson – Springer Publications, 2nd Edition,2001.2. Power Electronics: Circuits, Devices and Applications – by M. H. Rashid, Prentice Hall ofIndia, 3rd edition, 2006.3. Power Electronics – by Vedam Subramanyam, New Age International (P) Limited, 2008.Reference Books :1. Fundamentals of Power Electronics – by Issa Batarseh – John Wiley, 2004.2. Power Electronics by M. D. Singh and K. B. Kanchandhani, Tata Mc Graw Hill, 1998.
3. Power Electronics by P. S. Bimbhra, Khanna Publications, 2012.
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