420-4026/02 – Selected Chapters from Electrodynamics (VKED)

Gurantor departmentDepartment of Electrical EngineeringCredits6
Subject guarantordoc. Ing. Lubomír Ivánek, CSc.Subject version guarantordoc. Ing. Lubomír Ivánek, CSc.
Study levelundergraduate or graduateRequirementCompulsory
Year1Semestersummer
Study languageCzech
Year of introduction2020/2021Year of cancellation
Intended for the facultiesFEIIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
IVA10 doc. Ing. Lubomír Ivánek, CSc.
ORS60 Ing. Petr Orság, Ph.D.
ZAJ02 Ing. Stanislav Zajaczek, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Part-time Credit and Examination 7+7

Subject aims expressed by acquired skills and competences

- 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

Teaching methods

Lectures
Tutorials

Summary

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.

Compulsory literature:

Ivánek,L.: Selected Chapters from electrodynamics - lectures Ivánek,L., Zajaczek,S.: Selected Chapters from electrodynamics - tutorials on exercises

Recommended literature:

Jackson, J.,D.: Classical Electrodynamics - third edition, John Wiley and sons, Inc.1999, ISBN 0-471-30932-X

Way of continuous check of knowledge in the course of semester

Obhajoba všech protokolů z laboratorních cvičení a projektu. Závěrečná zkouška - zodpovězení otázek vymezených v Moodle.

E-learning

Ivánek, L., Zajaczek, S.: Vybrané kapitoly z elektrodynamiky - studijní podklady v lms moodle.

Other requirements

Required is basic knowledge of physics. From math are expected knowledge of complex variables.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Lectures: 1. Fundamentals of mathematics for description of physical field - vector calculus. 2. Physical units used in electrical engineering. 3. Physical principle of electromagnetic phenomena, distribution of electromagnetism in dependence on frequency. 4. Importance of Maxwell's equations in electrical engineering - connection with basic electrical engineering equations. 5. Use of electric field in industrial facilities. 6. Principles of electrical conductivity, dependence of conductivity on temperature, superconductivity. 7. Contact resistance, step potential, principles of earth resistance measurement. 8. Practical calculations of cable capacities and different types of lines. 9. Inductance and its determination in electrical equipment. 10. Energy conditions in electrical engineering. 11. Power manifestations of electromagnetism in electromagnets, electric motors and other electrical devices. 12. Eddy currents, surface and proximity phenomena, shielding of electromagnetic fields. 13. Electromagnetic interference due to wave radiation. 14. Effect of electromagnetic fields of different frequencies on human organism. Computational exercises 1. Gauss theorem, Ampere's law, Biot-Savart's law. 2. Massive conductor resistance calculations. 3. Calculations of capacitances and inductances for simple geometric arrangement of conductors. 4. Energy calculations in power systems. 5. Calculations of forces in power systems. Labs: 1. Methods of mapping of electromagnetic fields. 2. Force action of two conductors in different positions relative to each other 3. Effect of skin effect on impedance of conductive objects 4. Dependence of impedance of coil without core and with different types of cores on frequency 5. Frequency-dependent behavior of cables. Projects performed by computers: 1. Visualization of the effects of electrostatics in a specific case 2. Solving the effects of the magnetic field busbar

Conditions for subject completion

Full-time form (validity from: 2020/2021 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Credit and Examination Credit and Examination 100 (100) 51
        Credit Credit 45  10
        Examination Examination 55  6
Mandatory attendence parzicipation: xxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2021/2022 (N0713A060015) Design of Electrical Systems and Technologies EST K Czech Ostrava 1 Compulsory study plan
2021/2022 (N0713A060015) Design of Electrical Systems and Technologies EST P Czech Ostrava 1 Compulsory study plan
2020/2021 (N0713A060015) Design of Electrical Systems and Technologies EST K Czech Ostrava 1 Compulsory study plan
2020/2021 (N0713A060015) Design of Electrical Systems and Technologies EST P Czech Ostrava 1 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner