European intercomparison of measurements of rotational power loss in electrical sheet steel

Data Collapse of Energy Loss in Soft Magnetic Materials as a Way for Testing Measurement Set

“…The corresponding scaling exponents α, β and the scaling coefficients Γ (1) , Γ (2) are presented in Table I.…”

“…• Estimates of the scaling parameters α, β, Γ (1) and Γ (2) should be as accurate as possible. The precision of their values is important, since D 2 i , being an uncertainty measure, sensitively depends on them.…”

“…In 1995 the leading European Laboratories busy with measurements of the electrical steel magnetic properties were trying to compare the measurement results of the power loss in electrical sheet steel under the conditions of rotating and alternating flux [1]. The six participating laboratories applied different measurement methods, similar only in some cases.…”

“…For the purposes of this paper we distinguish the two of them: the geometry of the sample (size, shape) and the way for assessment of uncertainty contributions. Taking from [1] the idea of the inter-comparison of measurement data of the energy losses in soft magnetic materials (SMM), we perform such an inter-comparison with data taken in two laboratories [2][3][4], however under the conditions of axial and alternating flux. We show that the interference of the sample's geometry can be scaled off and this factor does not interfere on the data inter-comparison.…”

An investigation into the geometric parameters affecting field uniformity in four pole magnetisers

“…Unfortunately this is not the case for the measuring of iron losses due to spatially rotating fields. A number of methods have been proposed for the job, [1], [2] with a limited agreement being achieved on the reported loss values, as reported in [3].…”