| Course Unit Code | 420-4026/01 |
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| Number of ECTS Credits Allocated | 6 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | First Year |
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| Semester when the Course Unit is delivered | Summer 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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| IVA10 | doc. Ing. Lubomír Ivánek, CSc. |
| ZAJ02 | Ing. Stanislav Zajaczek, Ph.D. |
| Summary |
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| The subject is based on the requirements of designers for solving electrodynamic phenomena especially in heavy current electrical engineering. These problems were consulted with workers from various industrial companies and also based on the experience of the teacher in his design work at the project company ENERGOPROJEKT. The subject deals with the power effect of the electric field (separators, limitation of static electricity in the operations) and mainly with force effect of magnetism (forces in switchboards and switchboards, forces between busbars, interaction of cable distribution forces, etc.). An integral part consists of calculations of conduction capacities of various configurations, calculations of inductances of electrical devices, calculations of current conduction parts in dependence on frequency (skinefekt) and conduction of insulating elements. The course introduces students to the issue of electromagnetic compatibility in relation to radiated and received interfering energy. |
| Learning Outcomes of the Course Unit |
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- to lead the students so they could affect in the design practice to magnetic forces, whether in cases where the effect is desired (electric motors, solenoids, etc.) or when it is needed the force action respected as a secondary issue in the design of electrical equipment (switchgear, substations, cable management, ...)
- to familiarize students with the dangers of static electricity in the projected facilities associated with the storage of bulk materials, production and processing of paper, plastic foil, in the projection of hospital space, etc.
- to highlight the possibility of capacitive interaction between the various electrical devices, to handle calculation of capacity of lines, busbars, etc.
- to handle calculation of inductance conductors, induction interaction effect on the function of projected facilities
- to point out the change in electrical resistance with temperature and frequency (skin effect), to explain the mechanism of transmission of electric energy in the surrounding area the conductor
- to supplement the information of electromagnetic compatibility problems of interference radiated energy
- to lead the students to use modern mathematical methods and software tools (QField, COMSOL) to visualize the electromagnetic field, for calculations of forces and calculation of parameters of electrical equipment |
| Course Contents |
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Lectures:
1. Physical concepts of electromagnetic fields
2. Maxwell's equations in differential and integral form
3. Electric field in conductors or dielectrics
4. Electrical conductivity, dependence of conductivity on temperature, superconductivity
5. Electrostatic forces and their use
6. Practical computing of capacity in electrical equipment
7. Practical calculations of inductance in electrical equipment
8. Energy in the electromagnetic field, the energy lost in the hysteresis cycle
9. Forces in the magnetic field
10. Eddy currents, skin effect and proximity effect, shielding electromagnetic fields
11. Electromagnetic interference due to radiation waves
Laboratories:
1. Forces of two conductors at different positions relative to each
2. The influence of the skin effect on the impedance conductive objects
3. Dependence of the coil impedance at the frequency
4. Effect AC conductor in ferromagnetic grooves
5. Practical calculation of the interaction of two devices via the electromagnetic interaction
Projects performed by computers:
1. Visualization of the effects of electrostatics in a specific case
2. Solving the effects of the magnetic field busbar
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| Recommended or Required Reading |
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| Required Reading: |
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Ivánek,L.: Selected Chapters from electrodynamics - lectures
Ivánek,L., Zajaczek,S.: Selected Chapters from electrodynamics - tutorials on exercises |
Ivánek,L.: Vybrané kapitoly z elektrodynamiky - přednášky
Ivánek,L., Zajaczek,S.: Vybrané kapitoly z elektrodynamiky - návody na cvičení |
| Recommended Reading: |
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| Jackson, J.,D.: Classical Electrodynamics - third edition, John Wiley and sons, Inc.1999, ISBN 0-471-30932-X |
Ivánek, L., Zajaczek,S.: . Elektromagnetismus – učební text, Ediční středisko VŠB – TUO, v rámci operačního programu Rozvoj lidských zdrojů spolufinancováno z prostředků ESF a státního rozpočtu ČR, 2007, ISBN 978-80-248-1486-5.
Ivánek,L.: Selected Chapters from electrodynamics - lectures
Ivánek,L., Zajaczek,S.: Selected Chapters from electrodynamics - tutorials on exercises |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials |
| 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 | 45 | 10 |
| Examination | Examination | 55 | 6 |