Power Electronics BEE503
Course Code: BEE503
Credits: 04
CIE Marks: 50
SEE Marks: 50
Total Marks: 100
Exam Hours: 03
Total Hours of Pedagogy: 40H
Teaching Hours/Weeks: [L:T:P:S] 3:0:0:0
Introduction: Applications of Power Electronics, Ideal Characteristics of switches Characteristics of practical
devices; Specifications of Switches, control characteristics of power devices, Types of Power Electronic
Circuits, Peripheral Effects, Intelligent Modules.
Power Diodes: Introduction, Diode Characteristics, Reverse Recovery Characteristics, Power Diode Types,
Silicon Carbide Diodes, Silicon Carbide Schottky Diodes, Freewheeling diodes, Freewheeling diodes with RL
load.
Diode Rectifiers: Introduction, Diode Circuits with DC Source connected to R and RL load, Single-Phase FullWave Rectifiers with R load, Single-Phase Full-Wave Rectifier with RL Load.
Power Transistors: Introduction, Bipolar Junction Transistors Steady State Characteristics, Switching Characteristics, Switching Limits, Power MOSFETS – Steady State Characteristics, Switching Characteristics, IGBTs; BJT Base Drive, MOSFET Gate Drive, Isolation of Gate and Base Drives, Pulse transformers and Opto-couplers.
Thyristors: Introduction, Thyristor Characteristics, Two-Transistor Model of Thyristor, Thyristor Turn- On, Thyristor Turn-Off, A brief study on Thyristor Types, Series Operation of Thyristors, Parallel Operation of Thyristors, di/dt Protection, dv/dt Protection, Thyristor Firing Circuits, Unijunction Transistor.
Controlled Rectifiers: Introduction, Single phase half wave circuit with RL Load, Single phase half wave
circuit with RL Load and Freewheeling Diode, Single phase half wave circuit with RLE Load, Single-Phase Full Converters with RLE Load, Single-Phase Dual Converters, Principle of operation of Three- Phase duel Converters.
AC Voltage Controllers: Introduction, Principle of phase control & Integral cycle control, Single-Phase Full-Wave Controllers with Resistive Loads, Single- Phase Full-Wave Controllers with Inductive Loads, Three-Phase Full-Wave Controllers.
DC-DC Converters: Introduction, principle of step down chopper with R and RL load; principle of step up chopper with R load, Control strategies, performance parameters, DC-DC converter classification.
DC-AC Converters: Introduction, principle of operation single phase bridge inverters, performance parameters, three phase bridge inverters, voltage control of single phase inverters, Harmonic reductions, Current source inverters.