IEC TS 60349-3-2010 Electric traction - Rotating electrical machines for rail and road vehicles - Part 3 Determination of the total losses of converter-fed alternating current moto.pdf

1、 IEC/TS 60349-3 Edition 2.0 2010-03 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Electric traction Rotating electrical machines for rail and road vehicles Part 3: Determination of the total losses of converter-fed alternating current motors by summation of the component losses Traction lectrique M

2、achines lectriques tournantes des vhicules ferroviaires et routiers Partie 3: Dtermination des pertes totales des moteurs courant alternatif aliments par convertisseur par sommation des pertes lmentaires IEC/TS 60349-3:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerl

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17、9 03 00 IEC/TS 60349-3 Edition 2.0 2010-03 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Electric traction Rotating electrical machines for rail and road vehicles Part 3: Determination of the total losses of converter-fed alternating current motors by summation of the component losses Traction lect

18、rique Machines lectriques tournantes des vhicules ferroviaires et routiers Partie 3: Dtermination des pertes totales des moteurs courant alternatif aliments par convertisseur par sommation des pertes lmentaires INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q IC

19、S 45.060 PRICE CODE CODE PRIX ISBN 2-8318-1085-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 TS 60349-3 IEC:2010 CONTENTS FOREWORD.3 1 Scope and object5 2 Instrumentation 5 3 Summation of losses 6 3.1 The total

20、 losses are the sum of the following component losses. .6 3.2 Determination of the component losses .7 3.2.1 Asynchronous motors 7 3.2.2 Synchronous motors8 Annex A (informative) The equivalent circuit of an asynchronous motor .10 Annex B (informative) Stray load loss 16 Figure 1 Derivation of equiv

21、alent 50 Hz rated power input8 Figure A.1 Equivalent circuit of an asynchronous motor on no-load10 Figure A.2 Equivalent circuit of an asynchronous motor on load.13 Figure A.3 Graphical method for determining friction and windage loss15 Table 1 Accuracy of external attenuators .6 Table 2 Overall acc

22、uracy of power measurement.6 Table A.1 Determination of parameters of the equivalent circuit.11 Table A.2 Definition of parameters.14 TS 60349-3 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRIC TRACTION ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES Part 3: Determination of t

23、he total losses of converter-fed alternating current motors by summation of the component losses FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object o

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34、 committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is s

35、till under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into Internationa

36、l Standards. 4 TS 60349-3 IEC:2010 IEC 60349-3, which is a technical specification, has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This second edition cancels and replaces the first edition, issued in 1995, and constitutes a technical revision. The mai

37、n technical changes with regard to the previous edition are as follows: Omissions in some formulas in 3.2.1.2 and Table A.2 were fixed. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 9/1267/DTS 9/1342/RVC Full information on the voting fo

38、r the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stabi

39、lity date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be be transformed into an International standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. TS 60349-3 IEC:2010 5 ELECTRI

40、C TRACTION ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES Part 3: Determination of the total losses of converter-fed alternating current motors by summation of the component losses 1 Scope and object This technical specification applies to machines complying with IEC 60349-2. The total loss

41、es of a converter-fed motor may be determined by summation of the component losses derived from no-load and load tests. The total input power is the sum of the power at the fundamental frequency and at all other frequencies. In all practical cases the latter input includes the losses resulting from

42、the voltage and current harmonics in the converter supply by using suitable instrumentation it can be derived from measurement of the total and fundamental frequency power inputs when the machine is on load. The losses supplied at the fundamental frequency cannot be measured directly and so are deri

43、ved from measurement of the fundamental frequency load current and the fundamental frequency no-load power input. 2 Instrumentation The extra loss due to operation on a converter supply is obtained from the difference of the total and fundamental frequency power input on load. The power inputs shall

44、 be measured simultaneously on each phase by a digital sampling instrument. Measurement on all three phases is preferred but the two wattmeter method is permissible as an alternative. The total power is obtained from the product of voltage and current over a period of time and the fundamental power

45、from a Fourier transform using the same sampling. It is necessary to consider the accuracy of the whole instrument chain taking into account both amplification and phase shift errors over the desired frequency range. As the power factor of the harmonics is generally very low (less than 0,1 for volta

46、ge imposed asynchronous systems) particular attention is drawn to the need for minimum phase angle errors. At the time of publication of this technical specification, wattmeters accurate within the following limits, at 0,08 power factor, were available: below 2 kHz 0,5 %; between 2 kHz and 20 kHz 1,

47、0 %; between 20 kHz and 50 kHz 2,0 %. Instruments often contain attenuators compensated and adapted to them, but if an external attenuator is used, it is desirable that it be accurate within the following limits given in Table 1. 6 TS 60349-3 IEC:2010 Table 1 Accuracy of external attenuators Frequen

48、cy kHz Ratio error % Phase shift error degrees 0,8 % Power factor 0,4 % Power factor 0,1 % 2 1 2 10 2 to 20 2 5 14 20 to 50 4 8 20 NOTE The frequency range over which measurements are necessary depends on the harmonic content of the output from the particular converter used and should therefore be d

49、ecided for each individual case. With the instrumentation presently available, the overall accuracy of the total harmonic loss measurement is likely to be of the order of 10 %, but as the loss is unlikely to exceed 3 % of the total power input, this will result in only 0,3 % error in the calculated torque, which is well within the permitted tolerance of 5 % specifi