Abstract
The magnetic material characteristics of a wound-field synchronous machine are identified based on global calorimetric core-loss and no-load curve measurements. This is accomplished by solving a coupled experimental-numerical electromagnetic inverse problem, formulated to minimize the difference between a finite-element (FE) simulation-based Kriging surrogate model and the measurement results. The core-loss estimation in the FE model is based on combining a dynamic iron-loss model and a static vector Jiles-Atherton hysteresis model, whose parameters that are obtained by solving the inverse problem. The results show that reasonable hysteresis loops can be produced for a grid-supplied machine, while for an inverter-supplied machine the limitations in the FE and iron-loss models seemingly exaggerate the area of the loop. In addition, the effect of the measurement uncertainty on the inverse problem is quantitatively estimated.
Original language | English |
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Article number | 2001304 |
Journal | IEEE Transactions on Magnetics |
Volume | 51 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2015 |
Publication type | A1 Journal article-refereed |
Keywords
- Calorimetric loss measurements
- electromagnetic inverse problems
- iron losses
- magnetic hysteresis
- synchronous machines
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials