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Lecturer(s)
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Sochor Petr, Ing. Ph.D.
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Pánek Pavel, prof. Ing. CSc.
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Žampa Martin, Ing. Ph.D.
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Skála Ondřej, doc. Ing. Ph.D.
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Ťoupal Petr, Ing. Ph.D.
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Course content
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1. Types of convertors. Basic elements of power electronics. Commutation. Types of loads. 2. Uncontrolled rectifier - circuit, current and voltage waveforms. Controlled rectifier - circuit, current and voltage waveforms. 3.. Operating principle of controlled rectifier, load influence on characteristics and behaviour of voltage and current. Control characteristic of rectifier, calculatio of Udav. Control principles of rectifiers. Reversing rectifiers. 4. Step-down and step-up converters. Resistivity chopper. 5. Inverter - principle, voltage and current inverter and their comparison. Influence of reverse diode in inverter circuit. 6. Control of output voltage of inverters. AC frequency converters - direct, indirect. AC convertor voltage. More quadrant converter. 7.Power part of electric drive. Partition. Kinematics of el. drive. Formula motion. Motor as a system. Operating principle of rotational electric motors - DC, asynchronous, synchronous motors. 8. Fundamental values and relations of DC motor. Control of DC motor. DC motor power supply. Reversible converter group. 9. Fundamental values and relations of asynchronous motor. Natural characteristic. Steady state behavior Phasor diagram, mathematical model AM. 10. Drive control with asynchronous motor. Start and stops of induction motor. Single phase motors. 11. Electric drives with synchronous motors. Basic control structure of electric drive. Control of current and speed of DC motor. 12. Control structures of drives with asynchronous motors. Scalar control. Vector control. 13. . Negative effects of converters to distribution network. Minimization of voltage and current harmonics. Influence of converters to distribution network and motor. Energy balance of electric drive.
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Learning activities and teaching methods
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- unspecified
- 45 hours per semester
- Contact hours
- 20 hours per semester
- Preparation for an examination (30-60)
- 40 hours per semester
- Preparation for laboratory testing; outcome analysis (1-8)
- 8 hours per semester
- Preparation for formative assessments (2-20)
- 20 hours per semester
- Practical training (number of hours)
- 26 hours per semester
- Preparation for formative assessments (2-20)
- 20 hours per semester
- Contact hours
- 39 hours per semester
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| prerequisite |
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| Knowledge |
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| to master the basics of Theoretical Electrical Engineering |
| to master the basics of mathematical analysis |
| to clarify the basic functions of electronic circuits |
| to describe basic types of electric rotating machines and their principles of operation |
| to describe basic methods of analysis and design of control circuits |
| to characterize the basic properties of semiconductor elements |
| Skills |
|---|
| use complex numbers and operations with them |
| to solve the 1st order differential equations |
| identify a suitable method for the mathematical description of the electrical circuit |
| perform basic measurements on electric rotary machines |
| use digital measurement technology |
| to connect basic power circuits |
| Competences |
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| N/A |
| learning outcomes |
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| Knowledge |
|---|
| to describe basic types of power semiconductor convertorss |
| to evaluate requirements for semiconductor converters, motors and their regulation as a whole |
| explain the operation of the drive and the drive in different quadrants |
| to distinguish the basic control structures of electric drives |
| explain the basics of electromagnetic compatibility with regard to power electronics and electric drives |
| describe torque characteristics of machines for different operating conditions |
| explain the voltage and current of the individual inverters for various forms of control and various types of loads |
| assess the applicability of power electronic converters for practical use |
| to assess the possibilities of using electric drives for basic applications |
| recognize scalar and vector control inverters |
| to explain basic principles of electric drive control |
| Skills |
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| to design the basic parameters of the inverter for practical use |
| to determine the basic parameters of the rotating machine with regard to the practical application |
| to analyze basic power electronic circuits |
| to analyze basic circuits with electric drives |
| perform basic measurement of inverters |
| perform basic connection with semiconductor converters |
| make basic connection of inverters and electric machines together |
| to measure the basic characteristics of electric drives |
| teaching methods |
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| Knowledge |
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| Lecture |
| Practicum |
| Interactive lecture |
| Self-study of literature |
| Skills |
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| Laboratory work |
| assessment methods |
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| Knowledge |
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| Test |
| Oral exam |
| Skills |
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| Skills demonstration during practicum |
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Recommended literature
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Barnes, Malcolm. Practical variable speed drives and power electronics. Amsterdam : Elsevier, 2003. ISBN 0-7506-5808-8.
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Kůs, Václav. Elektrické pohony a výkonová elektronika. Druhé vydání. 2016. ISBN 978-80-261-0639-5.
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Pavel Kobrle; Jiří Pavelka. Elektrické pohony a jejich řízení, 3. přepracované vydání. Praha, 2016. ISBN 978-80-01-06007-0.
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Pitterman, Martin. Přehled měničů pro elektrické pohony. První vydání. 2015. ISBN 978-80-261-0598-5.
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Rashid, M. H. Power electronics handbook : devices, circuits, and applications handbook. 3rd ed. Burlington : Elsevier, 2011. ISBN 978-0-12-382036-5.
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Vondrášek, František; Glasberger, Tomáš,; Fořt, Jiří,; Jára, Martin. Výkonová elektronika. Svazek 3, Měniče s vlastní komutací a bez komutace.. 3., rozšířené vydání. 2017. ISBN 978-80-261-0688-3.
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