Course content

Modeling and dimensioning of electric power installations and apparatus requires physical understanding and knowledge of mathematical modeling. Students will based on the fundamental electromagnetic field theory learn to calculate stresses and parameters that characterize power systems or electrical apparatus. The lectures will be linked to practical issues in electric power engineering. Use of analytical and numerical methods for solving Maxwell's equations describing the electric and magnetic fields. The course starts with a continuation of electromagnetic theory with emphasis on adaption and use in electric power engineering. Especially emphasized are assumptions for applying static approaches when analyzing steady-state phenomena in electrical apparatus and systems. An introduction on use of numerical calculation tools based on Finite Element Method (FEM) for analysis of electric and magnetic fields is given. Topics that will be addressed are: Electrostatic field analysis in high voltage technology, the use of dielectric insulating materials, electric field control and shielding. Electric conductors, current distribution and losses. Static magnetic fields, the use of magnetic materials and permanent magnets. Dynamic magnetic fields; electromotive force, eddy currents, skin effect and proximity effect. Calculation of inductance, resistance and capacitance by direct and indirect methods such as energy methods. Power line models for power system analysis.

Learning outcome

Knowledge:
Having completed the course, the candidate should have knowledge to:
- Maxwell's equations and how to make relevant simplifications for analyzes in electrical power engineering
- use modern numerical software tools to solve practical problems in electric power engineering
- recognize phenomena related to practical problem solving and selection of the right model and calculation tools
- calculate parameters to be used in modeling and analysis of electric power apparatus and systems

Skills:
Having completed the course, the candidate should be able to:
- analyze a variety of known basic topics related to electric power apparatus and systems. Both analytical and numerical analysis.
- implement system simulations
- Apply numerical software to determine parameters and to simulate practical problems where field analysis are important.

The student will also have increased their skills in project work in groups.

Learning methods and activities

The course starts with traditinal lectures and exercises. Then, an introduction on use of numerical calculation tools based on Finite Element Method (FEM) for analysis of electric and magnetic fields is given. This tool is the applied to some selected practical topics where the lecture deals with theoretical and technical aspects which are important in practical analysis and design of the given topic. In the following exercises, numerical software is used extensively. Finally, the students works in groups on an examination-project eligible in the final grade. The teaching are to a large extent based on numerical exercises where lecturers and tutors provide support to student groups.

Compulsory assignments

• Øvinger
• Prosjektoppgave

Recommended previous knowledge

Students with a BSc in Electrical Power Engineering/Students with a three year college education in the field of electrical power engineering.

Required previous knowledge

Basic knowledge about electromagnetic theory based on Maxwell's equations. NTNU offers pre-course prior to semester start to students who lack this from their Bachelor study.

Course materials

Stated at semester start.

Credit reductions