School of Electrical Engineering & Telecommunications
University of New South Wales
ELEC9711 – ADVANCED POWER ELECTRONICS
Course Outline
Lecturer: F. Rahman
Location: Room EE133, Tel.: 9385 4893, email: f.rahman@unsw.edu.au
Tutor:
G. Foo
Course Objectives:
Power electronic circuits are now-a-days essential for a whole array of consumer and
industrial electronics products. At the low power end, these may include switched-mode
regulated power supplies for hand-held devices, TVs, light fittings, computers and other
entertainment systems. At the high power end, there are diverse industrial applications in
high voltage DC transmission, grid connections for wind generators and PV systems; Power
supplies for telecommunication equipment, welding, furnaces, and smelting; Power electronic
converters for variable-speed drives in automotive and railway traction and accessories, in
steel rolling, textile, paper rolling mills, machine tools, robotic, disk and other automation
drives, ship propulsion and positioning, aircraft actuators and navigation, to name a few.
Electronic processing of electrical power for these applications also provides the means to
control these processes to obtain certain desirable goals such as energy efficiency, better
product quality and accurate control of the processes
The course is aimed at students who have already been introduced to a first course in Power
Electronics which covers steady-state characteristics of various DC-DC, DC-AC, AC-DC and
resonant converter circuits. ELEC4614 which is a 4th elective course in EE&T, UNSW, is
such a course. The objective of ELEC9711 is to treat these converters further in terms of their
efficiency, control characteristics, description of converter dynamics and their control. Some
advanced converter topologies, especially in the context of large and complex applications,
which are beyond the scope of a first course in power electronics, are also treated.
The course also introduces students to computer modelling of power electronic converters
and their control circuits using modern simulation platforms like PSIM or PowerSim in
Matlab-Simulink.
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Opportunities:
The course is intended for students who may want to further their knowledge on the analysis,
analysis, design, control, efficiency analysis and switching techniques of power electronic
converter circuits. It should be relevant to engineers who may be involved in the design,
selection and maintenance of electronic power converters applied in the form of AC and DC
power supplies in appliances, in utility applications for grid connection of renewable power
sources, DC transmission and active power filter, in traction systems such automotives and
rail transport, in industrial automation equipment such as for motor drives, ship propulsion
and so on.
Brief Syllabus:
UOC6 HPW3
The topics to be covered in this course will include: Advanced topics in DC-DC converters,
inverters, AC-DC converters and AC-AC converters; resonant converters; dynamic
representation of DC-DC converters, control loops design, converter circuit and system
modelling using PSIM or other platforms, device selection and their modeling, thermal
design, gate drive circuit design, magnetic core and other component selection and design,
case studies of converter system designs.
Course Content______
Hours ______
DC-DC converters & power supplies
1. Review of assumed knowledge and switching devices;
4
Review of steady-state characteristics of DC-DC
converter circuits. SEPIC and Cuk converters;
PSIM models.
2. Analysis of non-ideal switches and circuit elements in
4
DC-DC converters,efficiency calculation, voltage transfer
characteristics with continuous and discontinuous
inductor current. PSIM models
3. Representation of dynamics of buck, boost and forward
4
converters; state-space averaging, PWM controller;
control loop design, voltage control, current mode
control; Limiting of inrush current;
Inductor and capacitor components.
DC-AC Inverters
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4. Review of assumed knowledge on DC-AC inverter circuits;
6
advanced modulation techniques, SVM; Compensation for
for dead time and device voltage drops. PSIM Models;
Current source inverters, multi-level and Z-source inverters.
Rectifier/inverter with bi-directional power flow.
5. Resonant converters
Zero-current switched (ZCS) DC-DC converter
Zero-voltage switched (ZVS) DC-DC converter
Series-resonant converter/inverter
Parallel-resonant converter/inverter
Series-parallel resonant converter
Resonant DC-link inverter/converter
6
6. AC-DC and AC-AC converters
Effect of source inductance in diode rectifier circuits
Effect of source inductance in controlled rectifier circuits
Single- and three-phase Cycloconverter circuits
Matrix converter
6
______________________________________________________________________
Total hours
30
Lecture Notes
Lecture notes written by the lecturer for each section will be available from the course
webpage. These will be based on the following text books and other reference material which
will be cited within the lecture notes.
All lecture notes, assignments, tutorial and technical report topics for this course can be
downloaded on the school webpage, via Current Students → Study Notes → Lecture Notes.
You may have to use username: (your student number) and password: ee&tview in order to
access these documents. Students will be expected to bring the printed lecture notes and
tutorial sheets into the lecture/tutorial room.
Textbook:
1.
N. Mohan, T. M. Undeland & W. P. Robins, “Power Electronics; Converters,
Applications and Design”, John Wiley, Second Edition, 1995, New York.
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References:
2.
J. G. Kassakian, M.F. Schlecht & G.C. Verghese, “Principles of Power Electronics”,
Addison Wesley, 1991.
3.
R. W. Erickson, "Fundamentals of Power Electronics”, Kluwer Academic
Publications, 1997.
4.
D. W. Hart, “Introduction to Power Electronics”, Prentice Hall International, 1997.
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Assessment:
Students will be assessed according to the following scheme:
Mid-session Test
15% of total
Hand-in questions and assignments 10% of total
Technical reports
15% of total
Final Examination
60% of total
The final examination will be worth 60 marks. Any four, each of equal mark, out of the six
questions set in the final examination may be answered.
Tutorials:
Lectures will be supplemented with problem solving tutorial sessions. Five to six tutorial
sheets may be expected These problem-solving sessions will be on most recently covered
topics. Additionally, PSIM sessions will be arranged in room EE214. Students will be
expected to participate vigorously during these sessions, in the form of questions, suggested
solutions and methods. Participation by students and the tutor should be viewed as desirable
aspects of these sessions.
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