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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS IEC 60034-17:1998 ICS
2、29.160.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Rotating electrical machines Part 17: Cage induction motors when fed from converters Application guide Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This Brit
3、ish Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 April 1999 BSI 04-1999 ISBN 0 580 32249 1 BS IEC 60034-17:1998 Amendments issued since publication Amd. No.DateCom
4、ments National foreword This British Standard reproduces verbatim IEC 60034-17:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electrical machinery, which has the responsibility to: aid enquirers to unde
5、rstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on
6、 this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publica
7、tions may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using
8、 the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity fro
9、m legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the IEC title page, pages 2 to 15 and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI RAPPORT TECHNIQUE CEI IEC TECHNICAL REPOR
10、T 60034-17 Deuxime dition Second edition 1998-06 Machines lectriques tournantes Partie 17: Moteurs induction cage aliments par convertisseurs Guide dapplication Rotating electrical machines Part 17: Cage induction motors when fed from converters Application guide Numro de rfrence Reference number CE
11、I/IEC 60034-17:1998 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL ELECT
12、ROTECHNICAL COMMISSION _ ROTATING ELECTRICAL MACHINES Part 17: Cage induction motors when fed from converters Application guide FOREWORD 1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nati
13、onal Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technica
14、l committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organ
15、ization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each techni
16、cal committee has representation from all interested National Committees. 3)The documents produced have the form of recommendations for international use and are published in the form of standards, Technical Reports or guides and they are accepted by the National Committees in that sense. 4)In order
17、 to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be cl
18、early indicated in the latter. 5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6)Attention is drawn to the possibility that some of the elements of this International Standar
19、d may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical
20、report of one of the following types: type 1, when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future but not immediate pos
21、sibility of an agreement on an International Standard; type 3, when the technical committee has collected data of a different kind from that which is normally published as an International Standard, for example state of the art. Technical reports of types 1 and 2 are subject to review within three y
22、ears of publication to decide whether they can be transformed into International Standards. Technical reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. Page 3 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun
23、, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IEC 60034-17, which is a technical report of type 2, has been prepared by IEC technical committee 2: Rotating machinery. This second edition cancels and replaces the first edition published in 1992 and constitutes a technical revis
24、ion. The text of this technical report is based on the following documents: Committee draftReport on voting 2/978/CDV2/994/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This document is issued in the type 2 tec
25、hnical report series of publications (according to G.3.2.2 of part 1 of the ISO/IEC Directives) as a prospective standard for provisional application in the field of rotating electrical machines because there is an urgent requirement for guidance on how standards in this field should be used to meet
26、 an identified need. This document is not to be regarded as an International Standard. It is proposed for provisional application so that information and experience of its use in practice may be gathered. Comments on the content of this document should be sent to the IEC Central Office. A review of
27、this type 2 technical report will be carried out not later than three years after its publication with the options of extension for another three years or conversion either to an International Standard or withdrawal. Page 4 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 1
28、1:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTRODUCTION The performance characteristics and operating data for drives with converter-fed cage induction motors are influenced by the complete system, comprising supply system, converter, induction motor, mechanical shafting and control equipmen
29、t. Each of these components exists in numerous technical types. Any values quoted in this technical report are thus indicative only. In view of the complex technical interrelations within the system and the variety of operating conditions, it is beyond the scope and objective of this technical repor
30、t to specify numerical or limiting values for all the quantities which are of importance for the design of the drive. To an increasing extent it is practice that drives consist of components produced by different manufacturers. The object of this technical report is to explain and quantify, as far a
31、s possible, the criteria for the selection of components and their influence on the performance characteristics of the drive. Page 5 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ROTATING ELECTRICAL MACHINES Part 17: Ca
32、ge induction motors when fed from converters Application guide 1 Scope This technical report deals with the steady-state operation of cage induction motors within the scope of IEC 60034-12, when fed from converters. It covers the operation over the whole speed setting range, but does not deal with s
33、tarting or transient phenomena. Only indirect type converters are dealt with. This type comprises converters with impressed direct current in the intermediate circuit (I-converters) and converters with impressed d.c. voltage (U-converters), either of the block type or the pulse controlled type, with
34、out restriction on pulse number, pulse width or pulse frequency. For the purpose of this technical report, a converter may include any type of electronic switching device, for example, transistors (bipolar or MOSfet), IGBTs, thyristors, GTO-thyristors, etc. with analog or digital control electronics
35、. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this technical report. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreemen
36、ts based on this technical report are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60034-1:1996, Rotating electrical machines Part 1
37、: Rating and performance IEC 60034-6:1991, Rotating electrical machines Part 6: Methods of cooling (IC Code) IEC 60034-12:1980, Rotating electrical machines Part 12: Starting performance of single- speed three-phase cage induction motors for voltages up to and including 690 V Amendment 1 (1992) Amen
38、dment 2 (1995) IEC 60072, Dimensions and output series for rotating electrical machines 3 Characteristics of the motor The output current of an I-converter passes through the stator winding of the motor during the commutating period. Therefore a knowledge of the motor equivalent circuit is important
39、 for the design of the commutating circuits. In the case of U-converters, a knowledge of the motor equivalent circuit is not normally important for the design of the commutating circuit, but the harmonic impedances of the motor greatly influence the losses caused by harmonics. Page 6 BS IEC 6003417:
40、1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI The above conditions are relevant for the basic operation capability of the drive. If details are required of the additional torques (in particular oscillating torques) and of the addition
41、al losses, which occur during converter operation, then a knowledge of the equivalent circuit parameters of the motor covering the harmonic spectrum will be necessary. Due to the existing design variants of cage induction motors with design N (e.g. copper deep- bar rotors and aluminium double-cage r
42、otors are used) and due to the wide frequency range of the most important harmonics (band width from 0 up to 30 kHz), a generally valid motor equivalent circuit cannot be specified. As a rule it is not admissible to use the quantities from the equivalent circuit for steady-state operation at system
43、frequency (e.g. with leakage inductances for normal running) in order to calculate torques and losses due to harmonics. The motor manufacturer may provide appropriate values of the equivalent circuit only if the frequency spectrum of currents and/or voltages generated by the converter is known. 4 Fr
44、equency spectrum of voltage and/or currents With respect to the necessary torque derating and to the oscillating torques excited by harmonics, it is important to know the relative harmonic content of motor voltages and/or currents compared with those during operation on a sinusoidal supply voltage.
45、Figure 1 shows the typical waveform of the motor phase current in the case of an I-converter drive. The produced harmonics are of the order n = 5; 7; 11; 13. The relative harmonic content depends mainly on the commutating time interval which may differ in different drives. Figure 2 shows the typical
46、 waveform of the motor phase voltage for operation with a synchronised pulse pattern where the harmonics are of the order n = 5; 7; 11; 13. In the case of U-converters a variety of pulse patterns is in use (which may be varied within the frequency setting range). Hence it is not possible to make glo
47、bal statements on the effects of the harmonics. For definite statements the harmonic content of the converter output voltage has to be known and its consequences on the motor shall be studied. Asynchronous pulse patterns, as applied in many cases, produce superimposed oscillations of the frequencies
48、: fnfnf= p1 where n = 0, 1, 2, 3,. and n = 1, 2, 3. are multiplying factors of the pulse frequency fp and of the fundamental frequency f1, respectively. There are also control schemes where no definite pulse frequency is used. With pulse controlled converters, the content of harmonics with low frequ
49、encies can be kept low, while the dominant harmonics (which are near the pulse frequency) will occur at relatively large frequency values, not having much effect due to the motor winding inductances. Page 7 BS IEC 6003417:1998 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:53:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI In 6.2.1 of IEC 60034-1 the interference immunity of cage induction motors is expressed by one single numerical value, called the harmonic voltage factor: HVF n 2 = u n