Title :
Transient currents and torques in wound-rotor induction motors using the finite-element method
Author :
Smith, A.C. ; Williamson, S. ; Smith, J.R.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
fDate :
5/1/1990 12:00:00 AM
Abstract :
The authors describe a time-stepping finite-element technique for modelling transient torques and currents in a slip-ring induction motor. The method is based on a coupled fields and circuit equation approach that allows the winding inductances to be modified to account for certain three-dimensional effects. The numerical solution incorporates a moving rotor so that slotting and saturation effects can be modelled accurately. The method is verified by direct comparison with experimental results obtained from a motor subjected to a supply reconnection at speed. It is shown that the general method can be extended in a straightforward manner to accommodate cage induction motors
Keywords :
finite element analysis; induction motors; rotors; torque; transients; coupled fields and circuit equation; finite-element method; saturation effects; slip-ring induction motor; slotting effects; three-dimensional effects; time-stepping finite-element technique; transient currents; transient torques; winding inductances; wound-rotor induction motors;
Journal_Title :
Electric Power Applications, IEE Proceedings B