IEC_TR_62383-2006.pdf

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 THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:?IEC Web Site(www.iec.ch)?Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.?IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.?Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email: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 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 the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chVFor price,see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical 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 amplifier.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 polarization.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 sheets.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 Block 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 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