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Lecturer(s)
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Skalický Martin, Ing.
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Dražan Jiří, Ing.
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Hruška Karel, Doc. Ing. Ph.D.
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Hána Bohumír, Ing.
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Vachtlová Michaela, Ing.
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Kindl Vladimír, Doc. Ing. Ph.D.
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Zeman Martin, Ing.
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Pechánek Roman, Doc. Ing. Ph.D.
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Skala Bohumil, Doc. Ing. Ph.D.
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Šobra Jan, Ing. Ph.D.
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Bouzek Lukáš, Ing.
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Nekolný Lukáš, Ing.
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Zíka Jiří, Ing.
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Světlík Pavel, Ing.
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Vlasák Martin, Ing.
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Veg Lukáš, Ing. Ph.D.
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Laksar Jan, Ing. Ph.D.
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Frank Zdeněk, Ing.
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Čermák Radek, Ing.
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Course content
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Lectures: 1. The total current law, self and mutual inductance, transformer principle, induces voltage 2. The phase diagram, per unit values, the winding connection, Hopkins's law 3. The Lorentz's law, the internal and external magnitudes, rotary field 4. The speed of the rotary field, rotary field of the 2ph and 3pfh system, the winding coefficient 5. Asynchronous machine, the principle of operation, run-up, slip, equivalent circuit 6. Mechanical power on the shaft of the machine, torque characteristic, run-up by the direct network connection, Y-D switching 7. SOFT START run-up, machine with the winding rotor, squirrel cage machine 8. Number of pole pair changing, speed control by the voltage and frequency of the supply source, braking, 1phase machine 9. Synchronous machine, principle of operation, motor and its run-up, phase diagram, self operated synchronous generator 10. The generator connected to the network, conditions, power control on the network, torque characteristic of the machine with the cylindrical rotor and salient poles 11. DC machines, principle of operation, description, induced voltage and torque, equivalent circuit, the characteristic in according to the excitation winding connection 12. Machines with permanent magnets, advantage and disadvantage, stepping machines 13. Ultrasonic machines, circle diagram of asynchronous machine Laboratory classes: 1. Introduction, measurement instruments 2. Theory - transformer. Design, no load test, short circuit test, the 50 vs 60 Hz network, basic calculation 3. Measurement no.1 - 3ph transformer. Resistivity measurement, no-load test, voltage ratio 4. Theory - transformer. Parallel operation, per unit value, basic calculation 5. Measurement no.2 - Reactive power compensation 6. Theory - asynchronous machine. Basic design, rotor description, terminal box, name-plate parameters, induced voltage, basic calculation 7. Measurement no.3 - Asynchronous machine I. Slip measurement 8. Theory - asynchronous machine. Torque relation, energy balance, currents and voltage in various winding connection, circle diagram, self-operated asynchronous generator 9. Measurement no.4 - Asynchronous machine II. No load test resistivity measurement 10. Theory - synchronous machine. Self-operated generator and generator on the network 11. Measurement no.5 - Asynchronous machine III. Y-D comparison 12. Theory - DC machine, commutation. Permanent magnets 13. Conclusion, check reports
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Learning activities and teaching methods
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Lecture with practical applications, Multimedia supported teaching
- Presentation preparation (report) (1-10)
- 4 hours per semester
- Preparation for an examination (30-60)
- 54 hours per semester
- Contact hours
- 26 hours per semester
- Practical training (number of hours)
- 26 hours per semester
- Preparation for laboratory testing; outcome analysis (1-8)
- 20 hours per semester
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| prerequisite |
|---|
| Knowledge |
|---|
| popsat principy měření elektrického odporu, napětí a proudu |
| popsat Lenzův, Faradayův a Kirchhoffovy zákony |
| ovládat značení elektrotechnických veličin a jejich fyzikální jednotky |
| Skills |
|---|
| navrhnout zapojení přístrojů pro měření výkonů v 3f sítích |
| analyzovat interakci magnetických polí a elektrického proudu ve vodiči |
| aplikovat základní matematické operace a elektrotechnické vztahy |
| Competences |
|---|
| N/A |
| learning outcomes |
|---|
| Knowledge |
|---|
| explain the principles of operation of transformers and electrical machines |
| ovládat vztahy potřebné pro vyřešení výpočtu |
| Skills |
|---|
| apply the knowledge of the measurement in DC current circuits and perform the analysis of the electrical drive, summarize the requirements posed on it |
| sketch out the scheme of a given existing connection of an electrical machine and perform the analysis of the electrical drive, summarizing the requirements placed upon it |
| put the given connection into operation under the laboratory conditions |
| Competences |
|---|
| N/A |
| teaching methods |
|---|
| Knowledge |
|---|
| Multimedia supported teaching |
| Interactive lecture |
| Skills |
|---|
| Practicum |
| Laboratory work |
| Competences |
|---|
| Interactive lecture |
| Practicum |
| assessment methods |
|---|
| Knowledge |
|---|
| Test |
| Combined exam |
| Skills |
|---|
| Skills demonstration during practicum |
| Individual presentation at a seminar |
| Combined exam |
| Competences |
|---|
| Combined exam |
| Individual presentation at a seminar |
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Recommended literature
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Bartoš, Václav. Elektrické stroje. Plzeň : Západočeská univerzita, 2000. ISBN 80-7082-221-X.
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Bartoš, Václav. Elektrické stroje. 1. vyd. V Plzni : Západočeská univerzita, 2006. ISBN 80-7043-444-9.
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Bašta, Jan; Chládek, Jaroslav; Mayer, Imrich. Teorie elektrických strojů. 1. vyd. Praha : SNTL, 1968.
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Del Toro, Vincent. Basic electric machines. Upper Saddle River: Prentice Hall, 1990. ISBN 0-13-060146-2.
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Hrabovcová, Valéria. Moderné elektrické stroje. 1. vyd. Žilina : Žilinská univerzita, 2001. ISBN 80-7100-809-5.
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Petrov, Georgij N. Elektrické stroje 1 : úvod-transformátory. Vyd. 1. Praha : Academia, 1980.
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Sarma, Mulukutla S. Electric machines : Steady-State Theory and Dynamic Performance. 2nd ed. St.Paul : West Publishing Comp., 1994.
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ŠTĚPINA, J. Fyzikální úvod do teorie elektrických strojů. ZČU v Plzni, 1995.
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