Title :
Numerical analysis of transient field problems in electrical machines
Author :
Hannalla, A.Y. ; MacDonald, D.C.
Author_Institution :
Ain Shams University, Faculty of Engineering, Cairo, Egypt
fDate :
9/1/1976 12:00:00 AM
Abstract :
A 2-dimensional section of a synchronous machine is modelled using 1st-order triangular finite elements. Equations are formulated by the use of Ampere´s law. The transient performance of the machine is obtained by determination of the vector potential distribution at successive instants in time, the effect of closed circuits being taken into account in the formulation of the equations by the introduction of conductivity matrices. Variable permeability of steel and the effect of eddy currents are taken into account. The method is applied to calculate the performance during a field-decrement test.
Keywords :
eddy currents; finite element analysis; synchronous machines; transient response; closed circuits; conductivity matrices; eddy currents; electrical machines; field decrement test; first order; numerical analysis; steel permeability; synchronous machine; transient field problems; transient performance; triangular finite elements; two dimensional; vector potential distribution;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1976.0190
