IEC TR 62383:2006
(Main)Determination of magnetic loss under magnetic polarization waveforms including higher harmonic components - Measurement, modelling and calculation methods
Determination of magnetic loss under magnetic polarization waveforms including higher harmonic components - Measurement, modelling and calculation methods
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. 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.
General Information
Standards Content (Sample)
TECHNICAL IEC
REPORT TR 62383
First edition
2006-01
Determination of magnetic loss
under magnetic polarization waveforms
including higher harmonic components –
Measurement, modelling and calculation
methods
Reference number
IEC/TR 62383:2006(E)
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TECHNICAL IEC
REPORT TR 62383
First edition
2006-01
Determination of magnetic loss
under magnetic polarization waveforms
including higher harmonic components –
Measurement, modelling and calculation
methods
© IEC 2006 ⎯ Copyright - all rights reserved
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– 2 – TR 62383 © IEC:2006(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Principles of measurement .7
3.1 General .7
3.2 Yokes, windings and test specimen .8
3.3 Power amplifier .8
3.4 Waveform synthesizer .8
3.5 Digitiser.8
3.6 Control of secondary voltage .9
3.7 Peak reading apparatus .9
3.8 Air flux compensation .9
4 Measuring system .10
5 Measurements.
...
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