A time-stepping coupled finite element-state space model for induction motor drives. I. Model formulation and machine parameter computation

Author

Demerdash, N.A. ; Bangura, J.F. ; Arkadan, A.A.

Author_Institution

Dept. of Electr. & Comput. Eng., Marquette Univ., Milwaukee, WI, USA

Volume

14

Issue

4

fYear

1999

fDate

12/1/1999 12:00:00 AM

Firstpage

1465

Lastpage

1471

Abstract

A time-stepping coupled finite element-state-space model for induction motor drives is developed. The model utilizes an iterative approach to include the effects of magnetic nonlinearities, and space harmonics due to the machine magnetic circuits´ topology and discrete winding layouts. Model formulation and development, which include an improvement in the layout of the cage circuit representation, are given in this paper. This improvement leads to an enhancement of the “well-posedness”, that is, reduction of ill-conditioning in the overall numerical convergence of the model. Meanwhile, in a companion paper results of induction motor performance simulation are compared with no-load and load tests for sinusoidal and inverter operating conditions. Particular attention is given to comparison between sinusoidal and inverter operating losses obtained from this generalized model

Keywords

finite element analysis; induction motor drives; invertors; iterative methods; losses; machine theory; machine windings; magnetic circuits; state-space methods; discrete winding layouts; ill-conditioning; induction motor drives; induction motor performance simulation; inverter operating conditions; iterative approach; load tests; machine parameter computation; magnetic circuit topology; magnetic nonlinearities; model formulation; no-load tests; numerical convergence; operating losses; sinusoidal operating conditions; space harmonics; time-stepping coupled finite element-state space model; Circuit topology; Convergence of numerical methods; Coupling circuits; Finite element methods; Induction motor drives; Induction motors; Inverters; Iterative methods; Machine windings; Magnetic circuits;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.815091

Filename

815091