1、TECHNICALREPORT IEC TR 62383First edition2006-01Determination of magnetic loss under magnetic polarization waveforms including higher harmonic components Measurement,modelling and calculation methodsReference number IEC/TR 62383:2006(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT T
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8、custserviec.chTel:+41 22 919 02 11 Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICALREPORT IECTR 62383First edition2006-01Determination of magnetic loss under magnetic polarization waveforms including higher
9、 harmonic components Measurement,modelling and calculation methodsPRICE CODE IEC 2006 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from th
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11、 Commission?LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 62383 IEC:2006(E)CONTENTS FOREWORD.4INTRODUCTION.61Scope.72Normative references.73Principles of measurement.73.1General.73.2Yokes,windings and test specimen.83.3Power amp
12、lifier.83.4Waveform synthesizer.83.5Digitiser.83.6Control of secondary voltage.93.7Peak reading apparatus.93.8Air flux compensation.94Measuring system.105Measurements.105.1Generation of the magnetic polarization waveform including higher harmonics.105.2Determination of peak value of magnetic polariz
13、ation.115.3Determination of the magnetic polarization.115.4Determination of magnetic field strength.125.5Determination of the magnetic loss.125.6Plotting the a.c.hysteresis loop including the higher harmonics.126Example of measurement.126.1Magnetic loss measurement of non-oriented electrical steel s
14、heets.126.2Magnetic loss measurement under stator tooth waveform conditions.137Prediction of magnetic loss including higher harmonic polarization.177.1General.177.2Energy loss separation 14.177.3Neural network method 17.237.4Modified superposition formula 20.258Summary.30Bibliography.31Figure 1 Bloc
15、k diagram of the measuring system for the measurement of magnetic loss of electrical steel sheets under magnetic polarization waveforms which include higher harmonic components.10Figure 2a Magnetic polarization J(t).13Figure 2b Magnetic field strength H(t).14Figure 2c AC hysteresis loops.14Figure 2
16、Dependency on the higher harmonic polarization components of the magnetic polarization J(t);magnetic field strength H(t),and a.c.hysteresis loops of non-oriented electrical steel at a fundamental magnetizing frequency f1=60 Hz and a maximum magnetic polarization J=1,5 T,and for higher harmonic frequency of fh=23f1.14LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TR 62383 IEC:2006(E)3 Figure 3 Specific total loss depending on the h
