COURSE INFORMATION
Course Title: POWER ELECTRONICS
Code Course Type Regular Semester Theory Practice Lab Credits ECTS
ECE 306 B 6 2 0 2 3 6
Academic staff member responsible for the design of the course syllabus (name, surname, academic title/scientific degree, email address and signature) NA
Main Course Lecturer (name, surname, academic title/scientific degree, email address and signature) and Office Hours: Prof.Dr. Gëzim Karapici gkarapici@epoka.edu.al , On apointment
Second Course Lecturer(s) (name, surname, academic title/scientific degree, email address and signature) and Office Hours: NA
Teaching Assistant(s) and Office Hours: NA
Language: English
Compulsory/Elective: Compulsory
Study program: (the study for which this course is offered) Bachelor in Electronics and Digital Communication Engineering (3 years)
Classroom and Meeting Time: NA
Code of Ethics: Code of Ethics of EPOKA University
Regulation of EPOKA University "On Student Discipline"
Attendance Requirement: Please refer to Epoka Regulations
Course Description: Students will study mainly DC-DC converters, analyzing energy efficiency, control, isolation and electromagnetic noise generation which shouldn’t inject disturbances in the mains, analysis magnetic components and filters; and characteristics of power semiconductor devices. The first part of the course treats basic circuit operation, including steady-state converter modeling and analysis, switch realization, discontinuous conduction mode, and transformer-isolated converters. Next, converter control systems are covered, including ac modeling of converters using averaged methods, small-signal transfer functions, and classical feedback loop design. Finally, magnetic design for switched-mode applications is discussed. After this course, a student will have a detailed knowledge of the basic DC-DC power conversion topologies, in particular buck, boost, buck boost, their working modes. The student will know some methods for deriving a linear small signal model of switching converters. Beside the non-isolated topologies, a student will learn the detailed behavior of the most common derived converters using an isolation transformers, including their small signal models. By the end of this course, a student will be able to design both the power and control section of an isolated converter, choosing the best among various different topologies and control methods, and estimating the component stress and total circuit efficiency.
Course Objectives: This course is designed to provide the student with an in depth knowledge about the themes of systems and circuits used for powering electronic circuits. Students will study mainly DC-DC converters, analyzing energy efficiency, control, isolation and electromagnetic noise generation which shouldn’t inject disturbances in the mains, analysis magnetic components and filters; and characteristics of power semiconductor devices. The first part of the course treats basic circuit operation, including steady-state converter modeling and analysis, switch realization, discontinuous conduction mode, and transformer-isolated converters. Next, converter control systems are covered, including ac modeling of converters using averaged methods, small-signal transfer functions, and classical feedback loop design. Finally, magnetic design for switched-mode applications is discussed. After this course, a student will have a detailed knowledge of the basic DC-DC power conversion topologies, in particular buck, boost, buck boost, their working modes. The student will know some methods for deriving a linear small signal model of switching converters. Beside the non-isolated topologies, a student will learn the detailed behavior of the most common derived converters using an isolation transformers, including their small signal models. By the end of this course, a student will be able to design both the power and control section of an isolated converter, choosing the best among various different topologies and control methods, and estimating the component stress and total circuit efficiency.
BASIC CONCEPTS OF THE COURSE
1 Students will study mainly DC-DC converters, analyzing energy efficiency
2 To provide basic knowledge on the general principles modes of operation of Linear multi-input control systems.
3 Steady-state converter modeling and analysis
4 DC-DC power conversion topologies
5 Topologies and control methods
COURSE OUTLINE
Week Topics
1 I. Math Background • Linear algebraic systems • Differential equations • Review of Complex Algebra, • Laplace transforms
2 II. Computational Tools for Power Electronics Circuits Analysis • Octave • LTspice
3 III. Summary of DC Circuit Analysis – Ohm’s Law, Kirchhoff’s Laws – Nodal and Mesh Analysis
4 IV. Summary of AC Circuit Analysis – Sinusoidal Signals – Phasor Domain Analysis
5 V Electronic Circuits – P‐Type and N‐Type Semiconductors Diodes – Diode Applications – Different Types of Diodes – AC‐to‐DC Converter
6 V. Electronic Circuits Transistors – Bipolar Junction Transistor – Transistor as an Amplifier – Transistors as Switches – Field‐Effect Transistors
7 V. Modeling of diodes and transistors – Using Octave & LTSpice to Study Diodes and Transistor
8 Mid-term
9 VI. SCR: Thyristor, Diac, Triac and UJT Thyristors • Basic Silicon-Controlled Rectifier Operation • SCR Characteristics and Ratings • SCR Applications • Shockley Diode • Diac • Triac • Unijunction Transistor
10 Part II Rectification VII. Diode Rectifier Circuits • Half-Wave Rectifier • Full-Wave Rectifier
11 VIII. Phase-Controlled Rectifier Circuits • HW Phased-Controlled Rectifier • FW Phase-Controlled Rectifier
12 IX. Introduction to DC-DC Converters: The Buck Converter
13 X. Two-Level DC-DC Converters • Boost Converters • Buck/Boost Converters • H-Bridge DC-DC Converters
14 XI. Inverters: Converting DC to AC • • Simulating Inverters using Octave/LTspice
Prerequisite(s): Basic of Electrical and Electronic Circuits
Textbook(s): 1. Daniel W. Hart, Power Electronics,2011, 1st Ed, McGraw-Hill, ISBN13: 978-0-07-338067-4 2) Randall Shaffer, Fundamentals of power Electronics with Matlab, 1st Ed.,2006, Charles River Media, ISBN 13:9781584508526
Additional Literature: 1. Ned Mohan, Power Electronics-A First Course, 2012, John Wiley & Sons, Inc, ISBN 978-1-118-07480-0 2. Electrical Engineering. Concepts and Applications, S. A. Reza Zekavat 3. Electrical Engineering, Principles and Applications, Allan R. Hambley 4. Electronic devices and circuit theory / Robert L. Boylestad, Louis Nashelsky. 5. Other materials, ppt, lecture notes, will be distributed by the lector.
Laboratory Work: Yes. Simulation with LTspice XVII
Computer Usage: Yes
Others: No
COURSE LEARNING OUTCOMES
1 The student will have a detailed knowledge of the basic DC-DC power conversion topologies, in particular buck, boost, buck boost, their working modes.
2 Ability to use some methods for deriving a linear small signal model of switching converters.
3 The student will learn the detailed behavior of the most common derived converters using an isolation transformers, including their small signal models.
4 By the end of this course, a student will be able to design both the power and control section of an isolated converter, choosing the best among various different topologies and control methods, and estimating the component stress and total circuit efficiency.
COURSE CONTRIBUTION TO... PROGRAM COMPETENCIES
(Blank : no contribution, 1: least contribution ... 5: highest contribution)
No Program Competencies Cont.
Bachelor in Electronics and Digital Communication Engineering (3 years) Program
1 Engineering graduates with sufficient theoretical and practical background for a successful profession and with application skills of fundamental scientific knowledge in the engineering practice 5
2 Engineering graduates with skills and professional background in describing, formulating, modeling and analyzing the engineering problem, with a consideration for appropriate analytical solutions in all necessary situations 5
3 Engineering graduates with the necessary technical, academic and practical knowledge and application confidence in the design and assessment of machines or mechanical systems or industrial processes with considerations of productivity, feasibility and environmental and social aspects. 4
4 Engineering graduates with the practice of selecting and using appropriate technical and engineering tools in engineering problems, and ability of effective usage of information science technologies. 5
5 5 Ability of designing and conducting experiments, conduction data acquisition and analysis and making conclusions. 4
6 6 Ability of identifying the potential resources for information or knowledge regarding a given engineering issue. 4 4
7 The abilities and performance to participate multi-disciplinary groups together with the effective oral and official communication skills and personal confidence. 4
8 Ability for effective oral and official communication skills in foreign language. 4
9 Engineering graduates with motivation to life-long learning and having known significance of continuous education beyond undergraduate studies for science and technology 5
10 10 Engineering graduates with well-structured responsibilities in profession and ethics. 2 5
11 Engineering graduates who are aware of the importance of safety and healthiness in the project management, workshop environment as well as related legal issues. 4
12 Consciousness for the results and effects of engineering solutions on the society and universe, awareness for the developmental considerations with contemporary problems of humanity. 4
COURSE EVALUATION METHOD
Method Quantity Percentage
Homework
4
2.5
Midterm Exam(s)
1
30
Quiz
2
5
Final Exam
1
50
Total Percent: 100%
ECTS (ALLOCATED BASED ON STUDENT WORKLOAD)
Activities Quantity Duration(Hours) Total Workload(Hours)
Course Duration (Including the exam week: 16x Total course hours) 16 3 48
Hours for off-the-classroom study (Pre-study, practice) 16 2 32
Mid-terms 1 12 12
Assignments 0
Final examination 1 24 24
Other 1 9 9
Total Work Load:
125
Total Work Load/25(h):
5
ECTS Credit of the Course:
6
CONCLUDING REMARKS BY THE COURSE LECTURER

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