The calculation of the classical loss as well as the excess loss in the soft magnetic materials under the rotational magnetisation
ISSN: 0332-1649
Article publication date: 14 August 2007
Abstract
Purpose
The calculation of the power loss in the core of the electrical machines is a special problem. In some areas of the electrical machine core the magnetic fields are neither unidirectional nor sinusoidal. This paper seeks to discuss the rotational power loss calculation methodology.
Design/methodology/approach
The proposed methodology is based on the calculation of the field quantities Bx and By. In this methodology the rotational power losses are calculated employing the empirical approach directly from these quantities. Moreover, the computational model is the most important element of the proposed methodology because it utilises the FEM to the calculations of the hodographs of the flux density vector in each mesh element.
Findings
The paper formulates the dependence of the rotational power losses from the B vector hodograph shape.
Research limitations/implications
Experimental verification will still be needed as to the accuracy of the model and the applicability to the various magnetic materials.
Practical implications
The paper provides an easy mathematical method to the iron loss calculation, under the rotational magnetisation, the excess loss included.
Originality/value
The analytical model, as presented here, is applicable to the iron loss calculation under the rotational magnetisation in devices that have complicated geometrical shapes.
Keywords
Citation
Anuszczyk, J., Gmyrek, Z. and Zwoliński, G. (2007), "The calculation of the classical loss as well as the excess loss in the soft magnetic materials under the rotational magnetisation", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 26 No. 4, pp. 1073-1080. https://doi.org/10.1108/03321640710756393
Publisher
:Emerald Group Publishing Limited
Copyright © 2007, Emerald Group Publishing Limited