Electrical Machines and Transformers

Instruction is in the form of lectures, exercises and mandatory laboratory sessions.
Magnetic circuits: important properties in non-linear magnetic materials, calculations of magnetic circuits, magnetizing losses and magnetizing current.
Transformers: step down and step up transformers, law of induction, transformer theorem, open circuit, voltage drop, equivalent scheme, loss, efficiency, structure, materials, coiling, cooling, three-phase connection, rated current data in switching, transformer testing, short curcuit impedance, winding connector, parallel connection of three-phase transformers.
Direct current machines: construction, theory, separate-, shunt-, and series magnetization, armature reaction, commutation, loss, efficiency, start, brake, speed rotation control.
Asynchronous machines: construction, theory, short circuit- and slip-ring machine, loss, efficiency, start, brake, speed rotation control, single phase operation, generator operation.
Synchronous machines: construction, theory, generator and machine operation, over- and under-magnetising, start, phase synkronization, loss, efficiency.

Progressive specialisation: G1F (has less than 60 credits in first‐cycle course/s as entry requirements)

Education level: Undergraduate level

Admission requirements: Circuit Analysis (ELGA01) 7.5 ECTS cr and Introduction to Power Engineering (ELGB20) 7.5 ECTS cr, or equivalent

Selection:

Selection is usually based on your grade point average from upper secondary school or the number of credit points from previous university studies, or both.

This course is included in the following programme

• Electrical Engineering (studied during year 2)