EE 471: Power Electronics
Seventh
Lecture
Schedule
See Timetable
Semester
Credit
Hours
Three + One
Pre-requisite
Instructor
Syed Abdul Rahman Kashif
Contact
Office
Power
Systems
Lab,
Department of Electrical Office Hours
Engineering
Teaching
Assistant
None
Lab
Instructor
Syed Abdul Rahman Kashif
Office
N/A
Office Hours
Same as above
Course
Description
This course will cover the design and analysis of power electronic converters such as
uncontrolled rectifiers, semi-controlled rectifiers, fully controlled rectifiers, inverters,
buck regulator, boost regulator, buck boost regulator, Cuk regulator (switch mode
power supplies), AC to AC controllers, cyclo-converters and PWM rectifiers.
Characteristics of power switches such as thyristor, power BJTs and MOSFETs will
be discussed in detail.
Expected
Outcomes
Upon completion of this course, students will:
• Understand the power electronics, power switches and their control
• Understand the basic design principles of uncontrolled, semi-controlled and fully
controlled rectifiers and their analysis under different load conditions.
• Be able to design Buck, Boost, Buck Boost and Cuk Regulators.(switch mode power
supplies)
• Become familiar with analysis and design of power inverters with different gating
techniques including advance PWM techniques as well.
• Understand the operation of AC to AC voltage controllers for single phase and three phase
applications
Textbooks
Grading
Policy
• Analog Electronics
abdulrahman@uet.edu.pk
Wednesday:
(10:00 am – 12:00 noon)
Tuesday:
(10:00 am – 12:00 noon)
REQUIRED:
• Power Electronics Circuits, Devices, and Applications by Muhammad H. Rashid, 4rth
Edition, Prentice Hall, 2015
• Power Electronics by K.R. Varmah and Chikku Abraham, Elsevier, 2014
• Quizzes:
• Mid Term
• Final:
30%
30%
40%
Course Contents – Power Electronics
Lecture Plan
Lectures
(No. Of
Weeks)
Topics
Readings
1*
Introduction to Power Electronics.
Characteristics of different power electronics switches. Basic
thyristor and gate control circuits.
Chap. 1 & 7
Diode Rectifier
1*
Single phase and three phase rectifiers with inductive loads
and freewheeling diode. Performance analysis, filter design
and effect of inductance on rectifier operation.
Chapter 3
Controlled Rectifiers
2*
Single phase and three phase controlled rectifiers with
inductive loads, dual converters, and power factor
improvement using PWM, series and parallel connections,
twelve pulse converters.
Chapter 10
Quiz 1
1*
Static Switches and Regulator
Single and three phase AC switches, DC switches, solid state
relays, microelectronic relays and design of static switches,
series and parallel regulators, design of regulator using 7805,
7812 and LM317
(Chapter 12)
And
Bogart
DC to DC converter (Non isolated)
3*
Introduction, Principle, Generation of duty cycle, Design,
simulation and performance analysis of buck, boost, buck
boost and cuk converters
Chapter 5
Mid Term
DC to DC converter (Isolated)
1*
1.5*
2.5*
Push-pull converter topology, fly back topologies, forward
(Chap. 5 & 14 )
converters, half bridge and full bridge converters, Design of a
switch mode power supply.
Power
Single phase Inverter.
Electronics
Introduction, principle of operation, performance parameters,
Circuits,
and single phase bridge Inverters, quasi square wave inverter,
Devices
and
sinusoidal PWM inverter and Fourier analysis. Cascaded
Applications
Inverters.
(Chapter 6)
Power
Three phase Inverters
Electronics
Three phase inverters with 180 and 120 degree conduction,
Circuits,
sinusoidal PWM inverter, regular sampling, single PWM,
Devices and
multiple PWM, modified sinusoidal PWM, symmetric and
Applications
asymmetric modulation, simulation and design of PWM based
(Chap. 6 )
inverters, Introduction to space vectors PWM.
Quiz 2 (At scheduled time)
2
Course Contents – Power Electronics
AC Voltage controllers
1*
Principle of ON-OFF control, principle of phase control, single
phase bi-directional controller with resistive and inductive load
and three phase full wave controller.
(Chapter 11)
Cyclo converters
1*
Single and three phase cyclo-converters with resistive and
inductive loads, PWM control and different topologies of
circuit.
Chapter 11
Thermal Design Considerations
1*
Heat dissipation, calculation of thermal resistance, design of
heat sink
Chapter 18
Final
3
Course Contents – Power Electronics
Lab Experiment Schedule
Exp. No.
Description
Introduction to Softwares for power electronics circuits
1
Single Phase Rectifier with inductive load (half bridge and full bridge)
2
Half Wave controlled Rectifier using R-and RC Triggering
3
Full Wave Rectifier using Resistive and R-C Triggering
4
Optically isolated Gate driver for N-channel MOSFET
5
Optically isolated Gate driver for P-channel MOSFET
6
Low Voltage Half Bridge Inverter using MOSFETs
7
PWM generation for Inverter circuit using TLP494: Natural Sampling Technique
Buck Converter
9
Boost Converter
10
Buck Boost Converter
11a
Push-pull converter
12
Project: Single Phase Inverter (180 degree, 120 degree, SPWM)
13-15
Project: Three Phase Inverter (180 degree, 120 degree, SPWM)
16
Linear Regulators and use of 78xx series
Lab Grading Policy
1.
2.
3.
4.
35% : Lab Experiment performance
20%: Lab design assignments
15%: Lab Quizzes/Lab Evaluation/Viva
30%: Lab Project (Design and simulation of power electronic converters)
4