Abstract
A procedure is described for identifying a mathematical model of core losses in ferromagnetic steel based on a minimal amount of experimental data. The new model has a hysteresis loss multiplicative coefficient variable only with frequency, a hysteresis loss power coefficient variable both with frequency and induction and a combined coefficient for eddy-current and excess losses that is, within a set frequency range, variable only with induction. Validation was successfully performed on a large number of different samples of nongrain oriented fully and semiprocessed steel alloys. Over a wide range of frequencies between 20 Hz and 2.1 kHz and inductions from 0.05 up to 2 T, the errors of the proposed model are substantially lower than those of a conventional model with fixed value coefficients.
Original language | English |
---|---|
Pages (from-to) | 1753-1756 |
Number of pages | 4 |
Journal | IEEE Transactions on Magnetics |
Volume | 43 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2007 |
Keywords
- Core loss
- Eddy-current loss
- Electrical machine
- Epstein test
- Ferromagnetic steel
- Hysteresis loss
- Iron loss
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering