| Course Unit Code | 410-2319/01 |
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| Number of ECTS Credits Allocated | 5 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | First Cycle |
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| Year of Study * | Third Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| BER30 | Ing. Petr Bernat, Ph.D. |
| KAC37 | doc. Ing. Petr Kačor, Ph.D. |
| Summary |
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| In this subject students acquaint with basic structuring of electrical machine and apparatus, philosophy and law of their function. Part of subject is practical - laboratory part, at which students will verify a theoretic piece of knowledge and test a primary objective characteristics of electrical machine and apparatus. |
| Learning Outcomes of the Course Unit |
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| Student know basic characteristic of electrical machines and apparatus and applies this know-how with the view of theirs use, testing and diagnostics. |
| Course Contents |
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1. Types of electric machines. Materials used by electric machines design. Windings in electric machines.
2. Enclosure, shape and cooling. Laws, equations and methods used in electric machines.
3. Principle and description of transformers. Operation states. Equivalent circuit. Phasor diagrams.
4. Three-phase transformers. Winding connection. Operation in parallel. Special types of transformers. Magnetic field of electric machines. Types and function of winding.
5. Use of asynchronous machines. Design types and foundation dates. Function and operation state. Energy bilance of asynchronous machines. Equivalent circuit. Torque.
6. Circle diagram of asynchronous machine. Starting and speed control of asynchronous motors.
7. Asynchronous generator and brake.
8. Single phase induction motors.
9. Influence of harmonics on a asynchronous machines running.
10. Basic terminology of electrical device.
11. Transient effects in switching el.circuit on and off.
12. Solution recovery voltage.
13. Power effects.
14. Thermal effects and cooling.
Laboratories:
1.Measurement of short-circuit current on transformer
2.Load characteristic of asynchronous motor
3.Line synchronization of synchronous generator
4.Measurement of temperature rise of low voltage circuit breaker
5.Measurement of let-through energy of circuit breaker in short-circuit connection
6.Pull characteristic of DC electromagnet |
| Recommended or Required Reading |
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| Required Reading: |
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| Hindmarsh,J.: Electrical Machines and their Applications, Oxford,1970 |
Mravec. R., Elektrické stroje a přístroje (I. - III.) SNTL (Alfa)1979, 1982
Bašta J. a kol.: Teorie el. strojů, SNTL/ALFA 1968
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| Recommended Reading: |
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Hindmarsh,J.: Electrical Machines and their Applications, Oxford,1970
Pyrhönen,J., Jokinen,T. Hrabovcová,V.: Design of rotating electrical machines, John Wiley & sons, Ltd. 2008 |
Keppert, S., Čermák, T.: Transformátory, skriptum VŠB Ostrava, 1984
Keppert, S.: Asynchronní stroje, skriptum VŠB Ostrava, 1984
Petrov,G.N.: El. stroje 1 a 2, ACADEMIA 1980
Bašta J. a kol.: Teorie el. strojů, SNTL/ALFA 1968
Hrabovcová,V., Rafajdus,P.: Elektrické stroje, teória a príklady, Žilinská univerzita, 2009
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| Planned learning activities and teaching methods |
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| Lectures, Tutorials, Experimental work in labs, Project work, Other activities |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Credit and Examination | Credit and Examination | 100 (100) | 51 |
| Credit | Credit | 40 | 20 |
| Examination | Examination | 60 | 11 |