IEC TR 62383:2006 Determination of magnetic loss under magnetic polarization waveforms including higher harmonic components - Measurement, modelling and calculation methods
Nowadays, by computer aided testing (CAT), a.c. magnetic properties of electrical steel
sheets can be measured under various measuring conditions automatically. For example, the
magnetic loss in the presence of higher harmonic frequency components of magnetic
polarization can be measured using the arbitrary waveform synthesizer, digitiser and
computer.
The present standard methods (IEC 60404-2, IEC 60404-3 and IEC 60404-10) for the
determination of specific total loss are restricted to the sinusoidal waveform of magnetic
polarization, and these standards are still important for the characterization of core materials.
However, actual waveforms of magnetic polarization in the electrical machines and
transformers always include higher harmonic polarizations, and nowadays electrical machines
can be designed using numerical methods including higher harmonics. But for these
conditions, there is still no standard testing method.
This technical report reviews methods for measurement of the magnetic loss of soft magnetic
materials under the condition of magnetic polarization which includes higher harmonic
components.
IEC TR 62383:2006 history
2006IEC TR 62383:2006 Determination of magnetic loss under magnetic polarization waveforms including higher harmonic components - Measurement, modelling and calculation methods