Power Electronics Full Scanned Lecture Notes - 2015 Edition

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Power Electronics Full Hand Written Lecture Notes from Reputed Institutions and Faculties. Useful for Electrical Engineers , Specially for Candidates Appearing for GATE Exams.

Content :
  • Power semiconductor devices
    1. Power Diode2. V-I characteristic of power diode3. Significant of drift region
  • SCR ( silicon controlled rectifier )
  • Forward blocking mode
  • Forward conducting mode
  • Significance of gate
  • Reverse blocking mode
  • Significance of latching current
  • Significance of holding current
  • Definitions of holding current 
  • Switching characteristic of SCR (  or) Dynamic characteristic 
  • Triggering method of SCR
    a. Forward voltage triggering methodb. Dv/ dt triggeringc. Light triggeringd. Thermal triggeringe. Gate triggering
  • Commutation techniques
    a. Natural commutationb. Forced commutation
  • Classification of commutation techniques
    a. Class A Commutation techniqueb. Class B Current commutationc. Class C Complementary commutation / impulsed. Class D Voltage commutation
  • Firing circuit
  • Gate turn on Voltage
  • UJT ( Unijunction transistor )
    1. UJT : Working as relaxation oscillator2. Synchronized UJT firing CKT
  • Protection of Thyristors
    1. Over Current protection 2. Over voltage protection3. Dv/dt protection4. Dia/dt protection5. Thermal protection6. Gate protectionSome special device
  • GTO (Gate turn off Thyristor )
  • ASCR ( Asymmetrical silicon controlled rectifier )
  • RCT ( Reverse conducting Thyristors )
  • TRIAC
  • TRIAC firing CKT using a DIAC
  • Power BJT
  • Characteristic of power BJT
  • Power MOSFET
  • Ø HWR - One Pulse Converter
  • RE load ( Charging Battery )
  • 1-Ø FWR ( 2- pulse converter )
  • 1-ø Half controlled rectifier
  • Semi converter
  • Harmonic analysis on AC side of converters
  • Harmonic analysis on DC side of converters
  • Performance of semi conductors
  • Draw backs
  • Three phase semi conductors
  • Representation of converters
  • Application
  • Dual converters
    1. Non-circulating current type2. Circulating current type dual converters
  • Effect of source inductance
  • Inductance voltage regulation
  • INVERTERS
  • Classification of inverters
    1. Voltage source inverters
  • a. Single phase half bridge inverters
  • b. Two phase full bridge inverters
  • c. Three phase VSI
    2. Current source inverters3. Series inverters4. Parallel inverters
  • Harmonic analysis
  • Draw backs
  • Rating of thyristors
  • Current source inverters (CSI)
  • Harmonic analysis
  • Advantage of CSI
  • Disadvantage
  • Auto sequential commutation inverters (ASCI)
  • Series inverters
  • Resonant converters
  • Voltage control of inverters
  • Types
  • Advantages
  • Disadvantages
  • Application
  • Types of PWM techniques
  • CHOPPERS
  • Stepdown choppers
  • RLE loads
  • Duty cycle
  • Step up choppers
  • CHOPPERS WITH FILTERS
  • Buck regulators
  • Critical inductance
  • Critical capacitance
  • BOOST regulators
  • BUCK regulators
  • BUCK-BOOST regulators
  • Classification
  • 1. First quardrant chopper
  • 2. Second quardrant choppers
  • AC voltage controllers
  • Application
  • Drawbacks
  • Cycloconverters
  • AC drives
  • Slip power recovery method
  • Scherbius drive
  • Application
  • Features
  • HVDC
  • Types of HVDC
  • SMPS
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