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Lecturer(s)
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Janda Martin, Ing. Ph.D.
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Laksar Jan, Ing. Ph.D.
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Skala Bohumil, Doc. Ing. Ph.D.
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Kindl Vladimír, Doc. Ing. Ph.D.
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Course content
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Lectures 1 Induction machine - Star-delta switching, transient phenomena during switching, re-connection of machine to network 2 Wound rotor induction machine, booster 3 Induction machine as a generator - self operated and working on network, risk of operation 4 Synchronous machine - excitation systems 5 Synchronous machine -short circuit 6 Synchronous machine -short circuit current and torque, dynamic behaviour 7 Synchronous machine with permanent magnets (PM) 8 Synchronous reluktance machine, Synchronous reluktance machine with PM, BLDC machines 9 Transformers - three winding, magnetizing current, equivalent circuit 10 Autotransformer 11 K-rated transformer 12 Phase shift transformer 13 Choke design, air-cored choke Laboratory classes 1 Induction motor - star - delta switching, transient phenomena 2 Induction machine - re-switching on network 3 Booster and its connection, voltage regulation and phase shift 4 Sudden short circuit of synchronous machine - symmetrical. Current and torque 5 Sudden short circuit of synchronous machine - unsymmetrical. Current and torque 6 Run-up of synchronous machine - back to back 7 V- curve of synchronous machine with PM 8 Parallel operation of transformers 9 Determination of parameters of equivalent circuit of three winding transformer 10 Autotransformer, calculation and measurement 11 K- rated transformer, K-factor determination, dereted factor calculation 12 Calculation and choke design 13 Credit
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Learning activities and teaching methods
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Laboratory work, Lecture
- Preparation for an examination (30-60)
- 50 hours per semester
- Contact hours
- 52 hours per semester
- Preparation for laboratory testing; outcome analysis (1-8)
- 8 hours per semester
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| prerequisite |
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| Knowledge |
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| describe the principles of electrical resistance, voltage and current measurement |
| explain the marking of electrotechnical quantities and their physical units |
| describe the principle of operation of transformers and rotating machines |
| Skills |
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| draw up a equivalent circuit of transformers and rotating machines |
| show the phase diagram of the transformer and rotating machines |
| apply torque equations and machine characteristics |
| Competences |
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| N/A |
| learning outcomes |
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| Knowledge |
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| explain the principles of operation of special transformers and chokes |
| explain the principle of the activity of special rotary machines, machines with permanent magnets and reluctance machines |
| justify the behavior of the synchronous machine in a sudden short circuit |
| Skills |
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| measure 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 |
| calculate the design of the choke and the transformer |
| apply the relationships needed to calculate the solution |
| Competences |
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| N/A |
| teaching methods |
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| Knowledge |
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| Lecture |
| Skills |
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| Laboratory work |
| Practicum |
| Competences |
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| Students' portfolio |
| assessment methods |
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| Knowledge |
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| Combined exam |
| Skills |
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| Skills demonstration during practicum |
| Competences |
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| Individual presentation at a seminar |
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Recommended literature
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BARTOŠ, V. Elektrické stroje. skripta ZČU v Plzni, 2000.
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Bartoš, Václav; Skala, Bohumil. Měření na elektrických strojích. 1. vyd. Plzeň : Západočeská univerzita, 2002. ISBN 80-7082-896-X.
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Hrabovcová, Valéria. Moderné elektrické stroje. 1. vyd. Žilina : Žilinská univerzita, 2001. ISBN 80-7100-809-5.
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Juha Pyrhönen, Tapani Jokinen, Valéria Hrabovcová. Design of rotating electrical machines. Chichester, 2014. ISBN 978-1-118-58157-5.
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