Coupled Problems in Heavy Current Engineering

Lecturer:

Ivo Doležel (gar.)

Tutor:

Ivo Doležel (gar.)

Supervisor:

Department of Electroenergetics

Synopsis:

The subject is aimed at modelling of coupled tasks (problems characterised by the interaction of several physical fields) in the domain of heavy current engineering and their consequent computer processing. High stress is laid on building a sufficiently correct mathematical model of the problem incorporating all physical aspects, evaluation of possibilities of eventual simplifications, determination of the boundary (or initial) conditions and choice of methods of its (mostly numerical) solution. Attention is also paid to the existing SW, its present possibilities and perspectives.

Requirements:

Syllabus of lectures:

1. Coupled problems in heavy current applications, their grouping and basic characteristics

2. Models of electromagnetic field produced by low-frequency sources

3. Characteristics and parameters of these electromagnetic fields - summarisation and extension

4. Temperature field and electromagnetic-thermal coupled problems

5. Field of velocities and forces, electromagnetic-mechanical coupled problems

6. Field of flow and electromagnetic-hydrodynamic coupled problems

7. Problems based on combination of the electromagnetic field theory and circuit theory

8. Multiply coupled problems I

9. Multiply coupled problems II

10. Possibilities of formulation of the coupled problems, advantages and drawbacks

11. Influence of accuracy of the mathematical model on results obtained

12. Algorithms of solution of the coupled problems I - differential methods

13. Algorithms of solution of the coupled problems II - integral, hybrid and other methods

14. Information on the existing SW, its present possibilities and perspectives

Syllabus of tutorials:

1. Survey of the typical coupled problems with primary role of the electromagnetic field

2. Demonstration solutions of selected electromagnetic fields by program OPERA

3. Energy and force effects in electromagnetic fields

4. Induction heating and consequent hardening of a steel cylinder (mathematical model, illustrative results)

5. Pulsed induction accelerator (mathematical model, illustrative results)

6. Model of the magnetohydrodynamic generator

7. Actuator with the ferromagnetic core (model, illustrative results)

8. Realisation of pressed joints of metal parts by means of the induction heating (model, illustrative results)

9. Situation in a 3-phase power cable with lossy insulation (model, illustrative results)

10. Discussion of the hard, quasi and weakly coupled formulations of multiply coupled problems

11. Influence of accuracy of the material parameters and other data on the quality of solution

12. Discretisation of a simpler continuous problem, characteristics and properties of the system matrix

13. Induction heating of a non-magnetic slab

14. Professional and user programs for solution of coupled problems

Study Objective:

Study materials:

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Heavy-current Engineering - Electroenergetics- structured studies (elective specialized course)
• Telecommunications and Radio-engineering - High-frequency and Microwave Technology- structured studi (elective specialized course)
• Heavy-current Engineering - Technological Systems- structured studies (elective specialized course)
• Cybernetics and Measurements - Control Engineering- structured studies (elective specialized course)
• Electronics - Electronic Systems- structured studies (elective specialized course)
• Economics and Management of Power Engineering- structured studies (elective specialized course)
• Biomedical Engineering- structured studies (elective specialized course)
• Economics and Management in Electrical Engineering- structured studies (elective specialized course)
• Electronics - Electronic Applications- structured studies (elective specialized course)
• Electronics - Electronics and Photonics- structured studies (elective specialized course)
• Cybernetics and Measurements - Artificial Intelligence- structured studies (elective specialized course)
• Cybernetics and Measurements - Measurement and Instrumentation Systems- structured studies (elective specialized course)
• Cybernetics and Measurements - Aeronautical Engineering and Control Systems- structured studies (elective specialized course)
• Heavy-current Engineering - Electric Drives- structured studies (elective specialized course)
• Heavy-current Engineering - Electrical Engineering Applications- structured studies (elective specialized course)
• Telecommunications and Radio-engineering - Opto-electric Systems- structured studies (elective specialized course)
• Telecommunications and Radio-engineering - Radio Communications, Navigation and Radar Systems- struc (elective specialized course)
• Telecommunications and Radio-engineering - Multimedia, Sound and Television Technology- structured s (elective specialized course)
• Telecommunications and Radio-engineering - Telecommunications- structured studies (elective specialized course)