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2、he European Standard EN 60904-9:2007 has the status of a British StandardICS 27.160Photovoltaic devices Part 9: Solar simulator performance requirementsBRITISH STANDARDBS EN 60904-9:2007BS EN 60904-9:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34, Uncontrolled Copy, (c)
3、BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2008 BSI 2008ISBN 978 0 580 57329 3Amendments/corrigenda issued since publicationDate Commentscontract. Users are responsible for its correct application.Compliance with a British
4、Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of EN 60904-9:2007. It is identical to IEC 60904-9:2007.The UK participation in its preparation was entrusted to Technical Committee GEL/82, Solar photovoltaic energy systems.A list
5、 of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a EUROPEAN STANDARD EN 60904-9 NORME EUROPENNE EUROPISCHE NORM November 2007 CENELEC European Committee for Electrotechnical Standa
6、rdization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60904-9:200
7、7 E ICS 27.160 English version Photovoltaic devices - Part 9: Solar simulator performance requirements (IEC 60904-9:2007) Dispositifs photovoltaques - Partie 9: Exigences pour le fonctionnement des simulateurs solaires (CEI 60904-9:2007) Photovoltaische Einrichtungen - Teil 9: Leistungsanforderungen
8、 an Sonnensimulatoren (IEC 60904-9:2007) This European Standard was approved by CENELEC on 2007-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterati
9、on. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by trans
10、lation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Fi
11、nland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34,
12、Uncontrolled Copy, (c) BSIForeword The text of document 82/488/FDIS, future edition 2 of IEC 60904-9, prepared by IEC TC 82, Solar photovoltaic energy systems, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60904-9 on 2007-11-01. The following dates were fixed: late
13、st date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-11-01 Annex ZA has been added by CENELEC. _ Endorsem
14、ent notice The text of the International Standard IEC 60904-9:2007 was approved by CENELEC as a European Standard without any modification. _ EN 60904-9:2007 2 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34, Uncontrolled Copy, (c) BSICONTENTS 1 Scope and object4 2 Normative
15、references .4 3 Terms and definitions .4 3.1 solar simulator.4 3.2 test plane 5 3.3 designated test area5 3.4 data sampling time 5 3.5 data acquisition time .5 3.6 time for acquiring the I-V characteristic .5 3.7 effective irradiance5 3.8 spectral range .6 3.9 spectral match.6 3.10 non-uniformity of
16、 irradiance in the test plane .6 3.11 temporal instability of irradiance6 3.12 solar simulator classification7 4 Simulator requirements 7 5 Measurement procedures .8 5.1 Introductory remarks .8 5.2 Spectral match 8 5.3 Non-uniformity of irradiance on the test plane .9 5.4 Temporal instability of irr
17、adiance.10 5.4.1 Solar simulators for I-V measurement10 5.4.2 Solar simulators for irradiance exposure12 6 Name plate and data sheet.12 Bibliography14 Figure 1 Evaluation of STI for a long pulse solar simulator.11 Figure 2 Evaluation of STI for a short pulse solar simulator .11 Table 1 Global refere
18、nce solar spectral irradiance distribution given in IEC 60904-36 Table 2 Definition of solar simulator classifications 7 Table 3 Example of solar simulator rating measurements.8 Annex ZA (normative) Normative references to international publications with theircorresponding European publications15EN
19、60904-9:2007 3 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34, Uncontrolled Copy, (c) BSIPHOTOVOLTAIC DEVICES Part 9: Solar simulator performance requirements 1 Scope and object IEC standards for photovoltaic devices require the use of specific classes of solar simulators de
20、emed appropriate for specific tests. Solar simulators can be either used for performance measurements of PV devices or endurance irradiation tests. This part of IEC 60904 provides the definitions of and means for determining simulator classifications. In the case of PV performance measurements, usin
21、g a solar simulator of high class does not eliminate the need to quantify the influence of the simulator on the measurement by making spectral mismatch corrections and analyzing the influences of uniformity of irradiance of the test plane and temporal stability on that measurement. Test reports for
22、devices tested with the simulator shall list the class of simulator used for the measurement and the method used to quantify the simulators effect on the results. The purpose of this standard is to define classifications of solar simulators for use in indoor measurements of terrestrial photovoltaic
23、devices, solar simulators are classified as A, B or C for each of the three categories based on criteria of spectral distribution match, irradiance non-uniformity on the test plane and temporal instability. This standard provides the required methodologies for determining the rating achieved by a so
24、lar simulator in each of the categories. This standard is referred to by other IEC standards in which class requirements are laid down for the use of solar simulators. Solar simulators for irradiance exposure should at least fulfil class CCC requirements where the third letter is related to long ter
25、m instability. In the case of use for PV performance measurements, classification CBA is demanded where the third letter is related to the short term instability. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, o
26、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60904-3: Photovoltaic devices Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data 3 Terms an
27、d definitions For the purposes of this document, the following terms and definitions apply. 3.1 solar simulator A solar simulator can be used for two different applications: a) I-V measurement. b) Irradiance exposure. The equipment is used to simulate the solar irradiance and spectrum. Simulators us
28、ually consist of three main components: (1) light source(s) and associated power supply; (2) any optics and filters required to modify the output beam to meet the classification requirements; EN 60904-9:2007 4 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34, Uncontrolled Copy
29、, (c) BSIand (3) the necessary controls to operate the simulator. Solar simulators shall be labelled by their mode of operation during a test cycle. These are steady state, single pulse, and multi-pulse. NOTE 1 Two types of solar simulators are commonly used to determine I-V characteristics: Steady-
30、state and pulsed. The pulsed solar simulators can be further subdivided into long pulse systems acquiring the total I-V characteristic during one flash and short pulse systems acquiring one I-V data point per flash. NOTE 2 Beside the light source, the lamp power supply and the optics, also the I-V d
31、ata acquisition, the electronic load and the operating software may be an integral part of the solar simulator. Requirements for the related measurement technique are included in other parts of the IEC 60904 series. 3.2 test plane the plane intended to contain the device under test at the reference
32、irradiance level 3.3 designated test area region of the test plane that is assessed for uniformity NOTE If required, typical geometries can be specified. A specification related to a circular geometry is also permitted. 3.4 data sampling time the time to take a single data set (irradiance, voltage,
33、current). In the case of simultaneous measurement, this is given by the characteristic of the A/D converter. In the case of multiplexed systems the data sampling rate is the multiplexing rate. EXAMPLE A multiplexing time of 1 s would give a sampling rate of 1 MegaSamples per second. NOTE Due to a po
34、ssible delay time for transient oscillation at each data point the data sampling rate must be related to the data acquisition system only. The data sampling time is used for evaluation of temporal stability. 3.5 data acquisition time the time to take the entire or a part of the current-voltage curve
35、 NOTE 1 The time of data acquisition depends on the number of I-V data points and a delay time that might be adjustable. NOTE 2 In the case of pulsed solar simulators the time of data acquisition is related to the measurements recorded during a single flash. 3.6 time for acquiring the I-V characteri
36、stic if the I-V curve of a PV device is measured through sectoring in different parts and successive flashes, the full time for acquiring the entire I-V characteristic is the sum of times of data acquisition 3.7 effective irradiance irradiance may change during data acquisition of a I-V performance
37、measurement. The effective irradiance is then the average irradiance of all data points. NOTE Care should be taken that possible irradiance correction meets the requirements of IEC 60891. EN 60904-9:2007 5 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/04/2008 03:34, Uncontrolled Copy, (c
38、) BSI3.8 spectral range the reference spectral distribution of sunlight at Air Mass 1,5 Global is defined in IEC 60904-3. For simulator evaluation purposes this standard restricts the wavelength range from 400 nm to 1 100 nm. In accordance with Table 1 this wavelength range of interest is divided in
39、 6 wavelength bands, each contributing a certain percentage to the integrated irradiance. 3.9 spectral match spectral match of a solar simulator is defined by the deviation from AM 1,5 reference spectral irradiance as laid down in IEC 60904-3. For 6 wavelength intervals of interest, the percentage o
40、f total irradiance is specified in Table 1. Table 1 Global reference solar spectral irradiance distribution given in IEC 60904-3 Wavelength range nm Percentage of total irradiance in the wavelength range 400 nm 1 100 nm 1 2 3 4 5 6 400 500 500 600 600 700 700 800 800 900 900 1 100 18,4 % 19,9 % 18,4
41、 % 14,9 % 12,5 % 15,9 % 3.10 non-uniformity of irradiance in the test plane %100minmaxminmax(%) +=irradianceirradianceirradianceirradianceuniformityNon (1)where the maximum and minimum irradiance are those measured with the detector(s) over the designated test area. 3.11 temporal instability of irra
42、diance temporal instability is defined by two parameters: a) Short term instability (STI) This relates to the data sampling time of a data set (irradiance, current, voltage) during an I-V measurement. This value of temporal instability may be different between data sets on the I-V curve. In that cas
43、e the short term instability is determined by the worst case. For batch testing of cells or modules with no irradiance monitoring during I-V measurement the STI is related to the time period between irradiance determination. b) Long term instability (LTI) This is related to the time period of intere
44、st: For I-V measurements it is the time for taking the entire I-V curve. For irradiation exposure tests it is related to the time period of exposure. %100minmaxminmax(%) +=irradianceirradianceirradianceirradianceyinstabilitTemporal (2)EN 60904-9:2007 6 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STA
45、NDARDS, 29/04/2008 03:34, Uncontrolled Copy, (c) BSIwhere the maximum and minimum irradiance depend on the application of the solar simulator. If the solar simulator is used for endurance irradiation tests, temporal instability is defined by the maximum and minimum irradiance measured with a detecto
46、r at any particular point on the test plane during the time of exposure. 3.12 solar simulator classification a solar simulator may be one of three classes (A, B, or C) for each of the three categories Spectral match, spatial non-uniformity and temporal instability. Each simulator is rated with three
47、 letters in order of spectral match, non-uniformity of irradiance in the test plane and temporal instability (for example: CBA). NOTE The solar simulator classification should be periodically checked in order to prove that classification is maintained. For example spectral irradiance may change with
48、 operation time of the used lamp or uniformity of irradiance is influenced by the reflection conditions in the test chamber. 4 Simulator requirements Table 1 gives the performance requirements for spectral match, non-uniformity of irradiance and temporal instability of irradiance. For the spectral m
49、atch, all six intervals shown in Table 1 shall agree with the ratios in Table 2 to obtain the respective classes. Refer to Clause 5 for procedures to measure and calculate the three parameters (spectral match, non-uniformity of irradiance and temporal instability) of the simulator. If the simulator is intended to be used for STC measurement, it should be capable of producing an effective irradiance of 1 000 W/m2at the test plane. Higher or lower irradiance levels may also be required. NOTE If hi
