2D Analytical Model for Computing Eddy-Current Loss in Nonlinear Thick Steel Laminations
Gürbüz, Ismet Tuna; Rasilo, Paavo; Martin, Floran; Osemwinyen, Osaruyi; Belahcen, Anouar (2022-09)
Gürbüz, Ismet Tuna
Rasilo, Paavo
Martin, Floran
Osemwinyen, Osaruyi
Belahcen, Anouar
09 / 2022
6301204
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202205124776
https://urn.fi/URN:NBN:fi:tuni-202205124776
Kuvaus
Peer reviewed
Tiivistelmä
In this paper, we propose an analytical method to compute the eddy-current loss in nonlinear thick steel laminations (3-12 mm) by considering the return path of the eddy currents. Initially, a 2D finite-element (FE) model is applied to segregate losses measured from toroidal material samples into hysteresis and eddy-current loss components to use them as reference. Afterwards, a 2D analytical time-domain model is proposed for the eddy currents based on the solution of the 2D field problem. The time-domain model is then used to derive a simple frequency-domain eddy-current loss formulation for the sinusoidal flux density case with the inclusion of a skin-effect correction factor, which accounts for the nonlinearity of the material. Highly accurate results are obtained from the proposed model compared to FE reference results with a mean relative error of 5.1% in the nonlinear region.
Kokoelmat
- TUNICRIS-julkaisut [16740]