Objectives and competences
The objective of this course is for students to be able to understand the use of analogue and digital electronics components in control theory and measurements. To demonstrate the practical use of previously acqoired basic knowledge from the use of digital systems and informationelectronics in thedesign of complex converter structures of power electronics.
Content (Syllabus outline)
Introduction: basic conversion principles in power electronics systems
DC-DC converters: buck converter, boost converter, buck-boost converter, Ćuk converter, converter with transformers, fly-back converter, forward converter, bridge converter.
Static and dynamic analyse of DC-DC converters: state space averaging method, current injected absorbed method, static characteristics of DC-DC converters, continuous and discontinuous converter models.
Inverters: single phase inverter structure, three phase inverter structure, six-step algorithm.
Modulation’s techniques: block modulation, harmonic cancellation technique, sinusoidal-three angle modulation, vector modulation, voltage and current spectrum.
Diode rectifiers: energy flow in non-linear converter circuits, power factor definition, diode rectifier with resistive load, diode rectifier with inductive load, diode rectifier with capacitive load.
SCR rectifier: SCR rectifier with resistive load, SCR rectifier with inductive load, four-quadrant DC motor drive, power factor in SCR applications, commutation process in SCR’s.
Power electronics components: power diodes BJT, MOSFET, IGBT, SCR GTOs, triggering units, protection of power semiconductors, snubber circuits, thermal behaviour of semiconductors.
Converters for DC motor drives, converter for AC motor drives.
Learning and teaching methods
• Lectures: In lectures, the student learns the theoretical basics of the subject.
• Seminar exercises: to consolidate theoretical knowledge in practical cases in the lecture room.
• Laboratory exercises: In these exercises, the student further consolidates theoretical knowledge in practical cases and learns how to apply.
• Homework: The student independently reinforces the acquired knowledge by solving homework and thus effectively prepared for the intermediate test (midterm exam) and final exam.
Intended learning outcomes - knowledge and understanding
• demonstrate knowledge and understanding of basic power electronics circuits design.,
• use of modern simulation techniques (SPICE, MATLAB/SIMULINK) in order to design power electronics converters,
• Select a suitable type of power inverter according to requirements,
• describe the operation of single-phase and three-phase rectifiers,
• describe the operation of inverters,
• describe the operation of basic DC-DC converters,
• compare the operation of basic DC-DC converters: continuous- and discontinuous conductive mode,
• identify the basic circuits of DC-DC converters
Intended learning outcomes - transferable/key skills and other attributes
Communication skills: oral lab work defence, oral presentation of seminar work, manner of expression at written examination.
Use of information technology: use of software package in order to design power electronics converters.
Calculation skills: design of power electronics devices.
Problem solving: implementation of simple power electronics systems.
Readings
• M. Milanovič: Močnostna elektronika, Fakulteta za Elektrotehniko računalništvo in informatiko, Maribor, 2007.
• F. Mihalič: Energetska elektronika, (zbirka rešenih nalog), Univerza v Mariboru, Fakulteta za Elektrotehniko računalništvo in informatiko, Maribor, 2008.
• N. Mohan, T. M. Undeland, W. P. Robbins: Power Electronics:Converters, Applications and Design, John Wiley & Sons, New York, 2nd ed. 1995.
• D. W. Nowotny, T. A. Lipo: Vector control and dynamics of AC drives, Oxford Science Publication, 1998.
Prerequisits
Basic knowledge of mathematics and electrical engineering is recomended.
