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BS EN IEC 60904-10:2020

BS EN IEC 60904-10:2020

$167.15

Photovoltaic devices – Methods of linear dependence and linearity measurements

Published By Publication Date Number of Pages
BSI 2020 34
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IEC 60904-10:2020 describes the procedures used to measure the dependence of any electrical parameter (Y) of a photovoltaic (PV) device with respect to a test parameter (X) and to determine the degree at which this dependence is close to an ideal linear (straight-line) function. It also gives guidance on how to consider deviations from the ideal linear dependence and in general on how to deal with non-linearities of PV device electrical parameters. This third edition cancels and replaces the second edition published in 2009. This edition includes the following significant technical changes with respect to the previous edition: a. Modification of title.b. Inclusion of an Introduction explanatory of the changes and the reasoning behind them. c. Inclusion of a new Clause Terms and Definitions (Clause 3), with distinction between generic linear dependence and linear dependence of short-circuit current versus irradiance (linearity). d. Explicit definition of equivalent sample (Clause 4). e. Technical revision of the apparatus (Clause 5), of the measurement procedures (Clause 6 to Clause 8) and of the data analysis (Clause 9), with separation of the data analysis for a generic linear dependence from the data analysis specific to linearity (i.e. short-circuit current dependence on irradiance) assessment. Additionally, inclusion of impact of spectral effects on both linearity and linear dependence assessment. f. Introduction of specific data analysis for two-lamp method, making it fully quantitative. Addition of extended version called N-lamp method. g. Modification of the linearity assessment criterion with inclusion of a formula that can be used to correct the irradiance reading of a PV reference device for non-linearity of its short-circuit current versus irradiance. A linearity factor is specifically newly defined for this purpose. h. Revision of the requirements for the report (Clause 10) in order to improve clearness about what information is always necessary and what is dependent on the procedure actually followed to measure the linear dependence, including the type of dependence measured (generic or linearity).

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
12 1 Scope
13 2 Normative references
3 Terms and definitions
14 4 Device selection
15 5 Apparatus
5.1 General requirements common to all procedures
16 5.2 Apparatus for measurement of all linear dependences under natural sunlight or with a solar simulator
17 5.3 Apparatus for measurement of all linear dependences of short-circuit current by differential spectral responsivity measurements
5.4 Apparatus for linearity measurement of short-circuit current by two-lamp method
5.5 Apparatus for linearity measurement of short-circuit current by N-lamp method
6 Procedures to measure linearity and other linear dependences under natural sunlight or with a solar simulator
6.1 Additional general requirements for natural sunlight
18 6.2 Mounting under natural sunlight
6.3 Mounting with a solar simulator
6.4 Linear dependence measurements versus irradiance
21 6.5 Linear dependence measurements versus temperature
22 7 Procedures to measure linearity and other linear dependence of short-circuit current from differential spectral responsivity
7.1 Linearity measurements
23 7.2 Linear dependence measurements of short-circuit current versus temperature
8 Procedure for short-circuit current linearity measurement by the two-lamp or the N-lamp methods
8.1 Background
24 8.2 Measurement procedure by the two-lamp method
25 8.3 Measurement procedure by the N-lamp method
26 9 Calculation of linear dependence and linearity
9.1 General considerations
9.2 Measurement uncertainty evaluation
27 9.3 Determination of deviations from a generic linear dependence
9.4 Determination of the short-circuit current non-linearity versus irradiance
28 9.5 Determination of the short-circuit current non-linearity versus irradiance using the two-lamp method
29 9.6 Determination of the short-circuit current non-linearity versus irradiance using the N-lamp method
30 9.7 Requirements for maximum deviations from the ideal linear function
31 10 Report
32 Bibliography

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BS EN IEC 60904-10:2020
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