Integration of a First Order Eddy Current Approximation With 2D FEA for Prediction of PWM Harmonic Losses in Electrical Machines

Author

Knight, Andrew M. ; Salmon, J.C. ; Ewanchuk, Jeffrey

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada

Volume

49

Issue

5

fYear

2013

fDate

May-13

Firstpage

1957

Lastpage

1960

Abstract

Two-dimensional (2D) finite element models of electrical machines are known to over predict iron losses when modeling systems excited using pulse width modulation. This digest presents the integration of a simple first order 1D approximation of the eddy current distribution within the lamination into a 2D finite element model. Simulations of an induction machine under no-load conditions using standard 2D FEA methods and the proposed method are compared with test measurements. The proposed approach is shown to improve the accuracy of the predictions while reducing simulation time.

Keywords

approximation theory; asynchronous machines; eddy current losses; finite element analysis; laminations; machine theory; pulse width modulation; 2D FEA methods; 2D finite element models; PWM harmonic loss prediction; eddy current distribution; electrical machines; first order 1D approximation integration; first order eddy current approximation integration; induction machine simulations; iron losses; lamination; no-load conditions; pulse width modulation; simulation time; Electrical machines; finite element analysis; iron losses; pulse width modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2242055

Filename

6514797