Abstract
Two new models for specific power losses in cold-rolled motor lamination steel are described together with procedures for coefficient identification from standard multifrequency Epstein or single sheet tests. The eddy-current and hysteresis loss coefficients of the improved models are dependent on induction (flux density) and/or frequency, and the errors are substantially lower than those of conventional models over a very wide range of sinusoidal excitation, from 20 Hz to 2 kHz and from 0.05 up to 2 T. The model that considers the coefficients to be variable, with the exception of the hysteresis loss power coefficient that has a constant value of 2, is superior in terms of applicability and phenomenological support. Also included are a comparative study of the material models on three samples of typical steel, mathematical formulations for the extension from the frequency to the time domain, and examples of validation from electrical machine studies.
| Original language | English |
|---|---|
| Pages (from-to) | 1554-1564 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 43 |
| Issue number | 6 |
| DOIs | |
| State | Published - Nov 2007 |
Bibliographical note
Copyright:Copyright 2008 Elsevier B.V., All rights reserved.
Keywords
- Brushless permanent-magnet (BLPM) motor
- Cold-rolled motor lamination steel
- Core loss
- Electric machine
- Epstein test
- Finite-element analysis (FEA)
- Interior permanent-magnet (IPM) motor
- Iron loss
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering