Course Name
|
Turkish |
Güç Elektroniği Sistemleri
|
| English |
Power Electronic Systems |
Course Code
|
ELK 503E |
Credit |
Lecture
(hour/week) |
Recitation
(hour/week) |
Laboratory
(hour/week) |
| Semester |
1
|
3 |
3 |
- |
- |
| Course Language |
English |
| Course Coordinator |
Salih Barış Öztürk
|
| Course Objectives |
The major objective of this graduate course is to introduce a variety of fundamental approaches to modeling the dynamics of power electronic circuits and their controllers.
Analytical approaches to modeling and understanding the dynamic behavior of power electronic systems will be presented and shown how to use these approaches in designing and evaluating practical feedback control systems. The emphasis will be on fundamental formulations that apply across a range of power electronic systems with illustrated extensive examples. The development of averaged models has also been considered beyond dc/dc converters, with generalizations to track the dynamics of the fundamental (and harmonics) converter waveforms. The analysis and feedback control of continuous-time (CT), linear, time-invariant (LTI) systems are described in the frequency domain and via LTI state-space models. The role of sampled data modeling and control in the stability evaluation of power electronic systems and its importance in the design of fully digital control systems will be retained. Simulations emphasizing the power electronic systems will also be covered.
|
| Course Description |
Students will have the fundamental knowledge of dynamic modeling and controlling power electronic systems.
Details of the Course Description:
Building the basis for analyzing the dynamic behavior of power circuits, and for designing and implementing controls that regulate the dynamics or errors, ensuring operation close to the desired condition, despite disturbances including variations and uncertainties in source, load, and circuit parameters, perturbations in switching times, startup and shutdown, or component failure. The focus will be on analysis and control design using appropriate models of dynamic behavior for both uncontrolled and controlled power converters.
Modeling approaches by introducing the idea of an averaged-circuit model will be discussed that is valuable in describing the behavior of dc/dc converters and other families of power circuits. The dynamics of the controller along with that of the power circuit will be modeled in order to study the controlled, closed-loop system. State-space models are introduced to embrace a much wider variety of modeling possibilities for converters and their controllers, which are also amenable to averaging. Circuit averaging will be applied to develop useful dynamic models for other categories of power converters, such as resonant converters, where the focus is on the local fundamental component. First, averaging is extended to broader classes of converters, including those for which the switch averaging is somewhat more subtle. Circuit averaging approaches for converters (such as resonant converters) in which the quantity of interest is not the local average value but rather the local fundamental. Later, state-space models for circuits and for more general systems (such as feedback controllers), and in both continuous time (CT) and discrete-time (DT) will be introduced.
The process of linearization for certain classes of nonlinear averaged-circuit models will be introduced. This will allow us to obtain LTI circuit models for small perturbations of averaged values from their constant values in nominal, steady-state operating conditions. These LTI models then serve as the basis for stability evaluation and control design of the power electronic converters.
The idea of circuit averaging is to derive an averaged model for the switch in high-frequency switched dc/dc converters and also obtain averaged-circuit models for the local component. The focus will be linearized the averaged switch, and illustrate the application of this linearized model to analyzing the small-signal behavior of the associated converters.
Modeling options will be extended to include state-space models. Both continuous-time signals, their averages, and their discrete-time samples in open- and closed-loop systems comprising power circuits and controllers. Linearized models given in state-space form will be used rather than the circuit form. Some key concepts and results for the analysis of LTI state-space models will be developed. Applications of these results to analyzing piecewise-LTI models and evaluating the stability of cyclic nominal operation in power circuits will be given.
The most typical route to usable LTI models in power electronics is the process of linearization, to describe small deviations around a constant steady. Such linearization will be illustrated using examples of average-circuit models. The design of feedback control to regulate a power converter in the vicinity of its nominal operating condition will be done on the basis of LTI models (usually obtained via linearization). The averaged-circuit models and the state-space models described in the course will be linearized around an operating point. The resulting LTI models can provide the basis for feedback control design. The application of the resulting linear models in stability evaluation and control design will be illustrated in the final stage of the course.
Computer simulations will be used as a part of the coursework.
|
| Course Outcomes |
At the conclusion of ELK503E, students are expected to be able to:
1)Understand the dynamic models and control of power electronic systems
2)Understand the averaged-circuit models of power electronic systems
3)Understand the state-space models of power electronic systems
4)Understand the process of linearization, to describe small deviations around a constant steady
5)Understand the linear, time-invariant (LTI) modeling of both continuous time (CT) and discrete-time (DT) power electronic systems
6)Understand the feedback control design of power electronic systems
7)Know how to simulate the power electronic systems using a computer simulation platform (such as MATLAB®/Simulink®, PSpice, OrCAD Capture, LTSpice, QSpice, PSIM (powersimtech.com), PLECS, Simba, Simplorer, SIMetrix/SIMPLIS, etc). |
| Pre-requisite(s) |
Here are the recommended pre-requisite(s) for this course: EHB 211 or EHB 211E or ELE 211 or ELE 211E or EEF 211 or EEF 211E (Basics of Electrical Circuits), EEF232E / EHB232E (Circuit and System Analysis), KON313E (Feedback Control Systems) or KON317E (Control Systems), ELK331E (Power Electronic Circuits)
Therefore, success in this course depends on a good knowledge of the following fundamental electrical engineering topics:
1.Steady-state and transient analysis of linear electric circuits containing resistors, inductors, and capacitors.
2.The behavior of RLC circuits involving switches.
3.Solution of differential equations with initial conditions.
4.Fundamentals of power electronic circuits emphasizing dc/dc converters.
5.Mathematical modeling, feedback control and stability analysis in time and frequency domains.
6.Algebra with complex numbers, the transformation from rectangular to polar coordinate and vice-versa.
7.Good knowledge of MATLAB®/Simulink® including SimscapeTM, Simscape ElectricalTM, Simscape Electrical > Specialized Power Systems (formerly known as SimPowerSystemsTM), PSpice, OrCAD Capture, LTSpice, QSpice, PSIM (powersimtech.com), PLECS, Simba, Simplorer, SIMetrix/SIMPLIS, etc. may be required for assignments to model and simulate power electronic circuits and systems.
Note1: The above subjects will not be directly covered/explained in the class - this course assumes you have sufficient knowledge of these topics. If you feel that your background on the above material is insufficient, you are advised to take a look at your circuit's and control systems notes and/or books as well as MATLAB®/Simulink® help documents and related resources on the web.
Note2: SimscapeTM ElectricalTM (formerly SimPowerSystemsTM and SimElectronics®) provides component libraries for modeling and simulating power electronic systems. It includes models of semiconductors and components for power electronics circuits.
https://www.mathworks.com/help/physmod/sps/getting-started-with-simscape-electrical.html |
| Required Facilities |
Use of power electronic circuit design and analysis simulations such as MATLAB®/Simulink®, PSpice, OrCAD Capture, LTSpice, QSpice, PSIM (powersimtech.com), PLECS, Simba, Simplorer, SIMetrix/SIMPLIS, etc. may be required for assignments. |
| Other |
For detailed and up-to-date information please visit the ninova site: https://ninova.itu.edu.tr/Sinif/31134.93049 as well as the course website at http://web.itu.edu.tr/ozturksb (not active yet !) and MATLAB® help documents, and MATLAB® File Exchange at https://www.mathworks.com/matlabcentral/fileexchange/ |
| Textbook |
J. G. Kassakian, D. J. Perreault, G. C. Verghese, and M. F. Schlecht, Principles of Power Electronics, 2nd ed. Cambridge: Cambridge University Press, Oct., 5th 2023, ISBN-13: 978-1316519516 |
| Other References |
•J. G. Kassakian, M. F. Schlecht, and G. C. Verghese, Principles of Power Electronics, 1st ed. Addison-Wesley Publishing Co., Inc., 1991, ISBN:0-201-09689-7
•R. W. Erickson and D. Maksimovic, Fundamentals of Power Electronics, Springer, 3rd Ed., 2020, ISBN-13: 978-3030438791
•L. Corradini, D. Maksimovic, P. Mattavelli, and R. Zane, Digital Control of High-Frequency Switched-Mode Power Converters, John Wiley& Sons, Inc., Hoboken, New Jersey, 2015, ISBN-13: 978-1-118-93510-1
•Philip T. Krein, Elements of Power Electronics, 2nd ed. Oxford University Press, 2014, ISBN-13: 978-0199388417
•M. H. Rashid, Power Electronics: Circuits, Devices, and Applications, 4th Ed., Pearson, 2013, ISBN-13: 978-0133125900
•N. Mohan, T. M. Undeland, and W. P. Robbins, Power Electronics: Converters, Applications, and Design, Int. Ed., 3rd Ed., John Wiley & Sons, Inc., 2003, ISBN-13: 978-0471429081
•Cyril W. Lander, Power Electronics, 3rd ed. McGraw Hill, 1993, ISBN-13: 9780077077143
•Daniel W. Hart, Power Electronics, Int. Ed., 1st Ed., New York, NY: McGraw-Hill, 2013, ISBN-13: 978-0071321204
•Ned Mohan, Power Electronics: A First Course, 1st Ed., Hoboken, NJ: John Wiley & Sons, Inc., 2011, ISBN-13: 978-1118074800
•Muhammad H. Rashid, Power Electronics Handbook, 4th Ed., Butterworth-Heinemann, 2017, ISBN-13: 978-0128114070
•Bogdan M. Wilamowski, J. David Irwin, Power Electronics and Motor Drives, 1st Ed., CRC Press, 2017, ISBN-13: 978-1-138-07747-8
•Issa Batarseh, Ahmad Harb, Power Electronics: Circuit Analysis and Design, 2nd Ed., Springer, 2018, ISBN-13: 978-3319683652 |
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