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

fYear

2007

fDate

22-24 Oct. 2007

Firstpage

437

Lastpage

444

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/EEIC.2007.4562656

Filename

4562656