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Terminated in academic year 2020/2021

Numerical Methods for Designing Electrical Machines and Apparatuses

Type of study Follow-up Master
Language of instruction English
Code 410-4205/02
Abbreviation NMSP
Course title Numerical Methods for Designing Electrical Machines and Apparatuses
Credits 8
Coordinating department Department of Electrical Power Engineering
Course coordinator doc. Ing. Petr Kačor, Ph.D.

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).

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.

Advised 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