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SCHOOL |
School of Engineering |
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ACADEMIC UNIT |
Department of Electrical and Computer Engineering |
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LEVEL OF STUDIES |
Undergraduate |
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COURSE CODE |
ECE_BK705 |
SEMESTER |
7th |
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COURSE TITLE |
POWER ELECTRONICS I |
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INDEPENDENT TEACHING ACTIVITIES |
WEEKLY TEACHING HOURS |
CREDITS |
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Lectures and Laboratory courses |
4+2 |
5 |
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Add rows if necessary. The organisation of teaching and the teaching methods used are described in detail at (d). |
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COURSE TYPE general background, |
Specialised general knowledge, skills development |
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PREREQUISITE COURSES:
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Mathematics, Physics, Analysis of Circuits and Power Networks, Electromagnetic Theory, Electronics, Electrical Machines, Automatic Control Systems |
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LANGUAGE OF INSTRUCTION and EXAMINATIONS: |
Greek |
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IS THE COURSE OFFERED TO ERASMUS STUDENTS |
NO |
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COURSE WEBSITE (URL) |
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Learning outcomes |
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The course learning outcomes, specific knowledge, skills and competences of an appropriate level, which the students will acquire with the successful completion of the course are described. Consult Appendix A · Description of the level of learning outcomes for each qualifications cycle, according to the Qualifications Framework of the European Higher Education Area · Descriptors for Levels 6, 7 & 8 of the European Qualifications Framework for Lifelong Learning and Appendix B · Guidelines for writing Learning Outcomes |
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Learning outcomes of the course: Upon successful conclusion of this course, the students should: 1. understand the construction characteristics and the operating behavior (static and dynamic) of the thyristor, as well as the methods of pulsing, protecting and cooling it. Also, he may have understood the operational behavior of newer semiconductor power devices (GTO thyristor, power MOSFET, IGBT etc). 2. understand and analyze the operational behavior of single phase and three phase AC-AC converters (AC regulators), AC-DC converters (rectifiers), as well as the phenomenon of commutation and its effects on natural commutated converters. 3. understand the concepts of active, reactive and apparent power in the aforementioned converters as well as the concept of current and voltage harmonics and their effect on the grid and the load. 4. understand and analyze the functional behavior of single phase and three phase DC-AC converters (inverters) with transistors and thyristor. 5. understand the classical and improved SPWM methods for pulsing single-phase and three-phase voltage inverters, as well as the methodology for adjusting the rms value and frequency of the fundamental of the output voltage. 6. understand the control of AC motors using inverters. 7. be capable to analyze and calculate various electrical quantities (voltage, current, power, etc.) in systems that include the above-mentioned converters. 8. be capable to analyze, calculate and dimensioning systems that include the previously mentioned topologies. 9. be capable to construct a system which includes converters, use the appropriate measuring instruments to accomplish electrical, mechanical and energy measurements, and to analyze the measurement results. Skills: Upon successful conclusion of this course, the students will have developed the following skills: 1. Ability to demonstrate his knowledge and understanding of essential values, concepts, theories and characteristics related to the subject of power electronics and in particular related to AC voltage regulators, rectifiers and inverters. 2. Ability to apply this knowledge for solving complicated problems. 3. Ability to adopt and apply methodologies for solving problems related to the taught material. 4. Ability to structure and operate energy conversion systems and to handle the appropriate instruments for measuring electrical, mechanical and energy quantities. 5. Studying skills required for his lifelong professional development. 6. Ability to collaborate for solving problems related to this field of knowledge or to an interdisciplinary field. |
General Competences |
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Taking into consideration the general competences that the degree-holder must acquire (as these appear in the Diploma Supplement and appear below), at which of the following does the course aim? |
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Search for, analysis and synthesis of data and information, with the use of the necessary technology Adapting to new situations Decision-making Working independently Team work Working in an international environment Working in an interdisciplinary environment Production of new research ideas |
Project planning and management Respect for difference and multiculturalism Respect for the natural environment Showing social, professional and ethical responsibility and sensitivity to gender issues Criticism and self-criticism Production of free, creative and inductive thinking …… Others… ……. |
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1. Search for, analysis and synthesis of data and information, with the use of the necessary technology 2. Adapting to new situations 3. Decision-making 4. Working independently 5. Team work 6. Working in an international environment 7. Working in an interdisciplinary environment 8. Production of new research ideas 9. Project planning and management 10. Production of free, creative and inductive thinking |
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1. Operation and classification of power electronic converters, semiconductor power devices, structure and behavioral characteristics of thyristors, analysis of their static and dynamic behavior, thyristor gating circuits, protection, cooling, other semiconductor power devices (GTO thyristor, power MOSFET, IGBT, etc). 2. Natural commutated converters without commutation phenomenon (AC regulators), single-phase and three-phase converters with anti-parallel thyristors, firing angle, current and voltage waveforms, active power regulation, reactive power, apparent power, control methods, applications, soft starters. 3. Natural commutated converters with commutation phenomenon (rectifiers): 3.1. Full-wave controlled single-phase rectifiers, voltage and current waveforms, speed control of DC motors, commutation phenomena, reactive power, harmonics, dual single-phase rectifiers, four-quadrant operation, half controlled single-phase bridge. 3.2. Reactive power of control and reactive power of commutation. 3.3. Half-wave three-phase rectifier, firing angle, voltage and current waveforms, commutation phenomena, harmonics. 3.4. Full-wave three-phase rectifier, voltage and current waveforms, active, reactive and apparent power, commutation phenomena, harmonics, speed control of DC motors. 3.5. Half controlled three-phase bridge, voltage and current waveforms. 3.6. Calculation of a rectifying system, transformers for natural commutated converters, harmonics effect. 3.7. Grid commutated converters with current reversing, grid commutated frequency converters, load commutated converters. 4. DC-AC Converters (Inverters): 4.1. Classification, applications, voltage, current and impedance source inverters. 4.2. Single-phase inverters with transistors, circuit analysis for ohmic and ohmic-inductive load, square wave switching scheme, SPWM switching scheme, regulation of the rms value and the frequency of the fundamental of the output voltage, output voltage spectral analysis, harmonics. 4.3. Single-phase inverters with thyristors (forced commutation), DC voltage converters in single phase thyristor switching, circuit analysis of basic topologies for ohmic and ohmic-inductive load, square wave switching scheme, voltage and current waveforms, improved topologies of single-phase inverters. 4.4. Three-phase inverters with transistors, circuit analysis, square wave switching scheme, SPWM switching scheme, regulation of the rms value and the frequency of the fundamental of the output voltage, output voltage spectral analysis, harmonics. 4.5. Asynchronous, Synchronous and Precalculated SPWM, Improved SPWM switching schemes, SVPWM Method, and Vector Control of inverters. 4.6. Applications of inverters to drive asynchronous and synchronous machines, control methods, speed and torque control, use of inverters in renewable energy systems (photovoltaic, wind, etc.), in distributed generation systems and in microgrids. |
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DELIVERY |
Lectures, Laboratory exercises Lectures using PowerPoint presentations, exemplary solving of simple as well as complex problems. Laboratory exercises (eight laboratory exercises related to the course subject, three hours each). In the framework of each laboratory exercise, discuss and solve relevant problems. |
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USE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY |
Yes In e-class there are videos of lectures and laboratory exercises, as well as presentations (PowerPoint). |
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TEACHING METHODS The manner and methods of teaching are described in detail. Lectures, seminars, laboratory practice, fieldwork, study and analysis of bibliography, tutorials, placements, clinical practice, art workshop, interactive teaching, educational visits, project, essay writing, artistic creativity, etc.
The student's study hours for each learning activity are given as well as the hours of non-directed study according to the principles of the ECTS |
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STUDENT PERFORMANCE EVALUATION Description of the evaluation procedure
Language of evaluation, methods of evaluation, summative or conclusive, multiple choice questionnaires, short-answer questions, open-ended questions, problem solving, written work, essay/report, oral examination, public presentation, laboratory work, clinical examination of patient, art interpretation, other
Specifically-defined evaluation criteria are given, and if and where they are accessible to students. |
Evaluation language: Greek Τhe final grade of the course is derived as a combination of the following grades: a) Final exams grade (60%) b) Laboratory grade (40%), which consists of: · Laboratory oral examination grade (40%) · Laboratory report grade (20%) · Final laboratory exam (40%) Minimum pass grade: 5/10 |
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- Suggested bibliography: 1. Teaching Book «Power Electronics, Converters, Applications and Design», 18548762, in Greek Authors: Mohan Ned, Undeland Tore, Robbins William, Editor: Tziola Publication (3th, 2010) 2. Teaching Book «Power Electronics», 68388749, in Greek Author: Manias Stefanos, Editor: Symeon Publication (2η, 2017) 3. Teaching Book «Power Electronics», 18549116, in Greek Author: Kioskeridis Iordanis, Editor: Tziola Publication (1η, 2008) 4. Teaching Book «Power Electronics, Circuits, Devices and Applications», 14836, in Greek Author: Rashid Μuhammad, Editor: ION Publishing Group (1η, 2010) 5. Notes «Power Electronics – Thyristor, Converters, Applications», in Greek Author: Athanasios Safacas, 2008, in Greek 6. Notes «Voltage Source Inverters and Control Methods», in Greek Author: Emmanuel Tatakis, 2015. 7. Notes «Notes for the Laboratory Exercises on Power Electronics Ι», in Greek Author: Emmanuel Tatakis, 2018.
- Journals and magazines: 1. IEEE Transactions on Power Electronics 2. IEEE Transactions on Emerging and Selected Topics in Power Electronics 3. IEEE Transactions on Industrial Electronics 4. IEEE Transactions on Industry Applications 5. IEEE Transactions on Energy Conversion 6. IEEE Transactions on Magnetics 7. IEEE Transactions on Power Delivery 8. IEEE Transactions on Power Systems 9. IEEE Transactions on Sustainable Energy 10. IEEE Transactions on Transportation Electrification 11. IEEE Transactions on Industrial Informatics 12. IEEE Power Engineering Review 13. IEEE Power and Energy Magazine 14. IEEE Power and Energy Technology Systems Journal 15. IEEE Access 16. IET Proceedings – Power Electronics 17. IET Proceedings – Renewable Power Generation 18. IET Proceedings – Electric Power Applications 19. IET Proceedings – Generation Transmission and Distribution 20. European Power Electronics and Drives Journal, Taylor & Francis 21. Renewable Energy, an International Journal (EPE), Elsevier 22. Electric Power Systems Research, Elsevier 23. International Journal of Electrical Power & Energy Systems, Elsevier 24. Sustainable Energy Technologies and Assessments, Elsevier 25. Renewable & Sustainable Energy Reviews, Elsevier 26. Applied Energy, Elsevier 27. Energy Efficiency, Springer 28. Energy Systems, Springer 29. Journal of Modern Power Systems and Clean Energy, Springer 30. International Transactions on Electrical Energy Systems (former ETEP), Wiley 31. Wind Engineering, SAGE Journals 32. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (IJAREEIE), Ess & Ess Research Publications 33. Energy and Power Engineering, Scientific Research.
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