410-4205/06 – Numerical Methods for Designing Electrical Machines and Apparatuses (NMSP)

Gurantor departmentDepartment of Electrical Power EngineeringCredits7
Subject guarantorIng. Petr Kačor, Ph.D.Subject version guarantorIng. Petr Kačor, Ph.D.
Study levelundergraduate or graduateRequirementOptional
Study languageEnglish
Year of introduction2022/2023Year of cancellation
Intended for the facultiesFEIIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
KAC37 Ing. Petr Kačor, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+3
Part-time Credit and Examination 8+10

Subject aims expressed by acquired skills and competences

Students use numerical method (FEM, etc.) for designing of electrical machines and devices by the help of suitable softwares (CAD, SOLIDWORKS, ANSYS, etc.)

Teaching methods

Project work
Other activities


Purpose of the study subject is centered towards new calculation methods and methodology of the project at the power current electrotechnics specialized to the electric machines and devices. On the particular examples are the students apprised of creation of physical model, of entering important material properties and specific boundary conditions, of solution, of processing of caltulated data and their interpretation for a practical assimilation. These calculations are realized through the Method of Finite Elements (FEM ) aided by software equipment ANSYS.

Compulsory literature:

Mason, J.R.: Switch engineering handbook, New York, 1993 ANSYS Manual Cassie, A.M: Introduction to the theory of circuit interruption, in: Trencham. H.: Circuit breaking, London, McGraw-Hill 1953 Gerszonowicz, H.: High-Voltage A.C. Circuit-Breakers.London,McGraw-Hill 1953 Greenwood,A.: Electrical transient in power systems.New York, Sydney, Toronto, Wiley Interscience, 1971. Holm, R.: Electric Contacts Handbook. Berlin, Springer-Verlag 1958, 1967. Jahn, R.G.:Physics of electric propulsion, New York McGraw-Hill 1968. Batiwala, F. et al: Comparsion of arc extinguishing systems, inductive currents. Helsinki 1981. Blower, R.W. et al: Vacuum circuit-breaker for distribution voltages. In: Symp. on h.v. switching equipment. Sydney 1979.

Recommended literature:

Burrage, L.M.: The operation of vacuum interrupters when tested at abnormal voltages, IEEE PAS 94, 1975. Madenci, E., Guyen, I. - The Finite Element Method Applications in Engineering Using ANSYS, Springer, 2005, ISBN: 0387282890

Way of continuous check of knowledge in the course of semester

Conditions for credit: Participation on exercises Protocols of measurments and calculations Credit test


Other requirements

There are not additional requirements for the student.


Subject has no prerequisities.


Subject has no co-requisities.

Subject syllabus:

Lectures: Describtion, basic structure of CAD and FEM software, model, material constants, loadings, post-processing. 2D and 3D electric field excercises, boundary conditions, loading, solution, post-processing. 2D and 3D magnetic field excercises, boundary conditions, loading, solution, post-processing. 2D and 3D electromagnetic field excercises, boundary conditions, loading, solution, post-processing. 2D and 3D thermal field excercises, boundary conditions, loading, solution, post-processing. Introduction to structural field solution, deformation, displacement, deflection, mechanical torque etc. 2D and 3D coupled-field simulation (electro-magnetic-thermal-structural). Solution methods, direct and indirect method, element types, material constants. Solution of CFD excercises, cooling, thermal fluid, liquids, gases Projects: Student has to make individual projects by the help of FEM. FEM simulation of force acting on two parallel conductors FEM simulation of AC current flowing FEM simulation of static force characteristic of DC electromagnet Computer labs: Requirements for passing of laboratory excercises, semestral project, Starting of software, utility menu, setting, memory management, import and export files, GUI. Preprocessor - 2D and 3D model building, element types,material properties, macro. 2D and 3D model of plate capacitor, computing of capacitance, high-voltage insulator (electric field intensity, dielectric strength). 2D and 3D model of manetic circuit with permanent magnet (magnetic circuit with BH curve, solution of force effect). 2D model of coil (computing of inductance of air-coils and solenoids with magnetic core). 2D model 3ph bus-bars (force effect in short-circuit condition, skin-effect, distribution of magnetic field at 3ph circuit). 2D model of DC solenoid magnet (static force characteristic, influence of BH characteristic on final force). 2D model of transforer (warming of winding). 2D model of 1ph transformer, solution of magnetic field, warming of winding at nominal loading. 3D model of thermal release of circuit breaker (warming at over-current condition, force effect made by thermal deformation). 3D model of motor shaft (material properties, loading). 2D CFD model of transformer (natural and force cooling, influence of cooling ribs).

Conditions for subject completion

Full-time form (validity from: 2022/2023 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of pointsMax. počet pokusů
Credit and Examination Credit and Examination 100 (100) 51
        Credit Credit 40  20
        Examination Examination 60  11 3
Mandatory attendence parzicipation: Compulsory participation in laboratory excersises.

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2022/2023 (N0713A060004) Electrical Power Engineering P English Ostrava 1 Optional study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner