This course is offered in German.
- Synchronous machines: Design and cooling methods of synchronous machines; performance of salient-pole machines in steady-state operation: phasor diagram, equivalent circuit diagram, locus diagram, voltage equations, Potier diagram, permanent magnet synchronous motors, synchronous reluctance motors; operation of synchronous generators with unsymmetrical load.
- Introduction into the rotating field theory, harmonic leakage, skewing.
- Electromagnetic design of polyphase machines.
- Theory of windings: design laws and calculation of winding factors for integer-slot and fractional-slot windings, imbricated windings and change-pole windings; Goerges polygon for determination of the m.m.f. curve and the harmonic leakage coefficient.
- Parametric fields based on fluctuations of the magnetic harmonic conductivity of the air gap (e.g. saturation, eccentricity and slotting fields).
- Current displacement in rotor cages; field damping by cage and slip-ring rotors; field damping by parallel paths of the stator winding.
- Tangential mechanical forces (generation, asynchronous and synchronous harmonic torques); radial mechanical forces (generation of magnetically excited noise and mechanical vibrations, unbalanced magnetic pull and its effect on the lateral critical speed of the shaft).
- Types of losses; additional losses caused by spatial harmonics.
Contact
Prof. Dr.-Ing. Bernd Ponick
Dean of Studies
Phone
Address
Welfengarten 1
30167 Hannover
30167 Hannover
Building
Room
Prof. Dr.-Ing. Bernd Ponick
Dean of Studies
Phone
