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IEC 60904-9
Edition 3.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Photovoltaic devices –
Part 9: Classification of solar simulator characteristics
Dispositifs photovoltaïques –
Partie 9: Classification des caractéristiques des simulateurs solaires
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IEC 60904-9
Edition 3.0 2020-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Photovoltaic devices –
Part 9: Classification of solar simulator characteristics
Dispositifs photovoltaïques –
Partie 9: Classification des caractéristiques des simulateurs solaires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-8765-1
– 2 – IEC 60904-9:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 Classification of solar simulator characteristics . 12
5 Measurement procedures . 13
5.1 Introductory remarks . 13
5.2 Spectral match . 13
5.2.1 General . 13
5.2.2 Apparatus . 13
5.2.3 Procedure . 14
5.2.4 Measurement uncertainty. 15
5.3 Non-uniformity of irradiance in the test plane . 16
5.3.1 General . 16
5.3.2 Apparatus . 16
5.3.3 Procedure . 17
5.3.4 Uncertainty of non-uniformity measurement . 19
5.4 Temporal instability of irradiance . 19
5.4.1 Solar simulators for I-V measurement . 19
5.4.2 Solar simulators for irradiance exposure . 21
5.4.3 Classification for temporal instability . 21
5.4.4 Uncertainty of temporal instability . 22
5.5 AM1.5 spectral coverage (SPC) . 22
5.6 AM1.5 spectral deviation (SPD) . 22
6 Name plate and data sheet . 22
Annex A (informative) Assessment of spectral mismatch error: Sensitivity to spectral
irradiance . 24
A.1 General . 24
A.2 Estimation of spectral mismatch-related uncertainty when the spectral
responsivities are known . 24
A.3 Sensitivity of spectral irradiance for spectral mismatch error when the
variation of spectral responsivities is not known . 25
A.4 Reporting . 28
Bibliography . 29
Figure 1 – Locations for spectral irradiance measurement of a rectangular test area
(left) and a circular test area (right) . 15
Figure 2 – Evaluation of STI for a long pulse solar simulator . 20
Figure 3 – Evaluation of STI for a short pulse solar simulator. 21
Figure A.1 – Virtual spectral responsivity with its dispersions and the modelling
parameters . 25
Figure A.2 – Reference SR curves for typical PV technologies . 27
Figure A.3 – Robustness of spectral irradiance regarding spectral mismatch error . 28
Table 1 – Global reference solar spectral irradiance distribution given in IEC 60904-3
contribution of wavelength intervals to total irradiance in the restricted wavelength
range 400 nm to 1 100 nm . 9
Table 2 – Global reference solar spectral irradiance distribution given in IEC 60904-3
contribution of wavelength intervals to total irradiance in the extended wavelength
range 300 nm to 1 200 nm . 10
Table 3 – Definition of solar simulator classifications . 12
Table A.1 – Reference SR curves for typical PV technologies . 26
– 4 – IEC 60904-9:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PHOTOVOLTAIC DEVICES –
Part 9: Classification of solar simulator characteristics
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