Title :
Calculattng the induced currents in induction machines using Schwarz-Christoffel mapping
Author :
O´Connell, Tim C. ; Krein, P.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana-Champaign, IL
Abstract :
A new method for simulating induction machine rotor currents is presented that combines Schwarz-Christoffel mapping theory with electromagnetic field reconstruction techniques. Detailed static field solutions are calculated at several rotor positions over a pole pitch of motion, and these solutions are superposed in a finite difference time- domain simulation to calculate the steady-state rotor currents. Using the proposed method, one can simulate numerous machine geometries and stator excitations, and winding and slot harmonics as well as torque ripple can easily examined.
Keywords :
asynchronous machines; electromagnetic fields; finite difference time-domain analysis; harmonic analysis; machine windings; Schwarz-Christoffel mapping; electromagnetic field reconstruction techniques; finite difference time-domain simulation; induced currents; induction machine rotor currents; slot hamonics; stator excitations; steady-state rotor currents; torque ripple; winding harmonics; Computational modeling; Design methodology; Electric machines; Electromagnetic fields; Geometry; Harmonic analysis; Induction machines; Machine windings; Stator windings; Steady-state; Schwarz-Christoffel mapping; field reconstruction; induction machine; slot harmonics; winding harmonics;
Conference_Titel :
Electrical Insulation Conference and Electrical Manufacturing Expo, 2007
Conference_Location :
Nashville, TN
Print_ISBN :
978-1-4244-0446-9
Electronic_ISBN :
978-1-4244-0447-6
DOI :
10.1109/EEIC.2007.4562656
