Unit 1 AC-DC converters (Uncontrolled)

5 lecture hours

• Principle of Operation – Classification – Applications Single Phase Uncontrolled Rectifier: Half Wave and Full wave – Analysis on Different Types of Load – Working along with Necessary Wave forms
• Three Phase Uncontrolled Rectifier: Half Wave
• Full wave - Analysis on Different Types of Load – Working along with Necessary Wave forms – Working Principle of Multi-pulse Rectifiers Effect of source and load inductance

Unit 2 AC-DC converters (Controlled)

9 lecture hours

• Principle of phase-controlled converter operation
• Operation of single-phase half-wave converter with R, RL and RLE load
• Significance of freewheeling diode
• Single-phase full-wave converter: Centre-tapped and Bridge Configuration
• Operation and analysis with R, RL, RLE load
• Semi-converter/Half-controlled converter: Asymmetric and Symmetric Configurations
• Rectification and Inversion Mode operation
• Three Phase Half Wave and Full Wave Controlled Rectifier with R & RL Load – Half Bridge and Full Controlled Bridge Rectifier with R & RL Load
• Dual Converter- Principle and operation
• 1-phase and 3-phase configurations
• Effect of source and load inductance
• Various Triggering Circuits for 1-phase&3-phase Controlled Rectifiers like Inverse Cosine Method
• UJT Firing Scheme
• Transistorized Firing
• Using Logic Gates

Unit 3 Thyristorized Choppers

8 lecture hours

• Chopper – Principle of Operation – Control Strategies: TRC & CLC – Classification
• Step Down and Step Up Choppers – First Quadrant (Type A) Chopper – Second Quadrant (Type B) Chopper – Two Quadrant (Type A or Type C) Chopper – Two Quadrant (Type B or Type D) Chopper – Four Quadrant (Type E) Chopper
• Principle of Working
• Analysis and Applications of Jones Chopper and Morgan Chopper
• Principle of Operation and Modes of Multi-phase Choppers

Unit 4 DC-DC Converters

8 lecture hours

• Importance & Requirement of DC Power Supply- Linear and Switching Power Supply – Principle – Classification based on various criteria – Performance Parameters
• Non-Isolated DC-DC Converters: Buck
• Buck- Boost and Cuk Converters in CCM & DCM – Their Operation – Analysis on Different Loads and Control along with Necessary Waveforms
• Working Principle and Waveforms of Luo, Sepic and Zeta Converter

Unit 5 Isolated DC-DC Converters

8 lecture hours

• Requirement and Importance of Isolation in Power Electronics Circuit – Advantages
• Working along with Wave forms
• Analysis and Efficiency of: Fly-back – Forward – Push Pull – Half Bridge – Full Bridge Converters

Unit 6 Resonant Converters

• Review of Resonance – Advantages – Principle of Operation of Resonant Converters – Classification Series and Parallel Resonant Converters ZVS and ZCS Resonant Converters – Types (L & M) – Working Principle – Wave forms – Analysis – Comparison