Estimation of additional losses due to random contacts at the edges of stator of an electrical machine

Loading...
Thumbnail Image
Access rights
© 2015 Emerald. This is the post print version of the following article: Shah, Sahas Bikram & Rasilo, Paavo & Belahcen, Anouar & Arkkio, Antero. 2015. Estimation of additional losses due to random contacts at the edges of stator of an electrical machine. COMPEL. Volume 34, Issue 5. 1501-1510. ISSN 0332-1649 (printed). DOI: 10.1108/compel-02-2015-0083, which has been published in final form at http://www.emeraldinsight.com/doi/full/10.1108/COMPEL-02-2015-0083.
Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2015
Department
Sähkötekniikan ja automaation laitos
Department of Electrical Engineering and Automation
Major/Subject
Mcode
Degree programme
Language
en
Pages
1501-1510
Series
COMPEL, Volume 34, Issue 5
Abstract
The burrs of electrical machine formed during punching process impair the insulation and make random galvanic contacts between the electrical sheets. This paper presents the modeling of random galvanic contacts in a 37 kW induction machine using a surface boundary layer model. Several thousand time stepping finite element simulations were performed, varying the conductivity randomly at the edges of electrical sheets. Then, the additional losses were computed using a vector potential formulation and the surface boundary layer model. The preliminary result showed the increase of total electromagnetic loss by 7.7%
Description
Keywords
boundary conditions, eddy current, electric conductivity, FEM, magnetic vector potential
Other note
Citation
Shah, Sahas Bikram & Rasilo, Paavo & Belahcen, Anouar & Arkkio, Antero. 2015. Estimation of additional losses due to random contacts at the edges of stator of an electrical machine. COMPEL. Volume 34, Issue 5. 1501-1510. ISSN 0332-1649 (printed). DOI: 10.1108/compel-02-2015-0083.