Course detail
Power electronics
FEKT-BVELAcad. year: 2012/2013
Basic classification of power converters: AC/DC, AC/AC, DC/DC, DC/AC. Cascade of few converters. DC-bus. Static thermal phenomena. Cooling of semiconductors. Demanded thermal resistance of the heat sink. Active power; its calculation in special cases. EMC in LF region. Power factor, total harmonic distortion factor. Power switching devices, overview: diode, thyristor, triac, BJT, MOS-FET, IGBT, GTO.
Special chapters from the semiconductor theory. Chip structure of these power devices: fast diode, slow diode, symmetric thyristor, asymmetric thyristor, bipolar transistor, MOS-FET, IGBT, GTO. Detail analyse of the switch-on, and switch-off processes in the transistors. Switching loss calculation.
Rectifiers: non-controlled, controlled. Typical loads. Mean value of output voltage. Net rectifiers for supplying of transistor converters. AC/AC converters: 1-phase, 3-phase. Loads of R, L, R-L, R-L-Ui types. Phase control of triacs. DC/DC transistor converters. DC/AC transistor converters (1-phase, 3-phase). Control strategy of DC/DC, and DC/AC converters. PWM, sinusoidal PWM. Magnetic phenomena in the power electronics. Transformer theory. Mathematic models of the voltage transformer and current transformer. Switch-mode supplies. DC/DC converters with the pulse transformer. Single-end, and double-end buck converters.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Learning outcomes of the course unit
Prerequisites
Co-requisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
5 + 10 = 15 points for two semestral tests.
70 points for exam.
100 points total.
Course curriculum
2. Static thermal phenomena. Cooling of semiconductors. Demanded thermal resistance of the heat sink.
3. Active power; its calculation in special cases.
4. EMC in LF region. Power factor, total harmonic distortion factor.
5. Power switching devices, overview: diode, thyristor, triac, BJT, MOS-FET, IGBT, GTO.
6. Rectifiers: non-controlled, controlled. Typical loads. Mean value of output voltage.
7. Rippling of the load current. Demanded inductance of the choke. Type power of transformer.
8. Main rectifiers for supplying of transistor converters. Two-pulse, and six-pulse rectifier with the capacitor.
9. AC/AC converters: 1-phase, 3-phase. Loads of R, L, R-L, R-L-Ui types. Phase control of triacs.
10. DC/DC transistor converters. DC/AC transistor converters (1-phase, 3-phase).
11. Control strategy of DC/DC, and DC/AC converters. PWM, sinusoidal PWM.
12. Magnetic phenomena in the power electronics. Transformer theory. Mathematic models of the voltage transformer and current transformer.
13. Switch-mode supplies. DC/DC converters with the pulse transformer. Single-end, and double-end buck converters.
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
Patočka M.: Vybrané statě z výkonové elektroniky, sv. 1, skriptum FEKT, VUT Brno (CS)
Patočka M.: Vybrané statě z výkonové elektroniky, sv. 2, skriptum FEKT, VUT Brno (CS)
Patočka M.: Výkonová elektronika, 1. část - usměrňovače, střídavé měniče napětí, skriptum FEKT, Brno, 2010 (CS)
Vrba, J.: Výkonová elektronika 1b. Elektronický text VUT FEKT Brno 2003 (CS)
Recommended reading
K.Heumann,A.Stumpe:Thyristoren,B.G.Teubner (DE)
Z.Čeřovský,J.Pavelka : Výkonová elektronika 1, skripta ČVUT (CS)
Classification of course in study plans
- Programme EECC Bc. Bachelor's
branch B-MET , 3 year of study, winter semester, elective interdisciplinary
branch B-TLI , 3 year of study, winter semester, elective interdisciplinary
branch B-AMT , 3 year of study, winter semester, elective interdisciplinary
branch B-SEE , 2 year of study, winter semester, compulsory
branch B-EST , 3 year of study, winter semester, elective interdisciplinary - Programme EEKR-CZV lifelong learning
branch EE-FLE , 1 year of study, winter semester, compulsory
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
2. Static thermal phenomena. Cooling of semiconductors. Demanded thermal resistance of the heat sink.
3. Active power; its calculation in special cases.
4. EMC in LF region. Power factor, total harmonic distortion factor.
5. Power switching devices, overview: diode, thyristor, triac, BJT, MOS-FET, IGBT, GTO.
6. Rectifiers: non-controlled, controlled. Typical loads. Mean value of output voltage.
7. Rippling of the load current. Demanded inductance of the choke. Type power of transformer.
8. Main rectifiers for supplying of transistor converters. Two-pulse, and six-pulse rectifier with the capacitor.
9. AC/AC converters: 1-phase, 3-phase. Loads of R, L, R-L, R-L-Ui types. Phase control of triacs.
10. DC/DC transistor converters. DC/AC transistor converters (1-phase, 3-phase).
11. Control strategy of DC/DC, and DC/AC converters. PWM, sinusoidal PWM.
12. Magnetic phenomena in the power electronics. Transformer theory. Mathematic models of the voltage transformer and current transformer.
13. Switch-mode supplies. DC/DC converters with the pulse transformer. Single-end, and double-end buck converters.
Fundamentals seminar
Teacher / Lecturer
Syllabus
2. Active power; its calculation in special cases.
3. Controlled rectifiers. Design. Rippling of the load current. Demanded inductance of the choke. Type power of transformer.
4. Main rectifiers for supplying of transistor converters. Design. Two-pulse, and six-pulse rectifiers.
5. DC/DC transistor converters. Design.
6. DC/AC transistor converters. Design.
7. Magnetic phenomena in the power electronics. Choke design.Transformer design.
Laboratory exercise
Teacher / Lecturer
Syllabus
2. Uncontrolled rectifiers. Basic features.
3. AC voltage inverter. Control characteristics. Analysis of output values.
4. DC/DC converter. Control and load characteristics. Analysis of output values.
5. DC/AC converter. Analysis of output values. Basic characteristics.