IEC TS 63202-4:2022

Photovoltaic cells - Part 4: Measurement of light and elevated temperature induced degradation of crystalline silicon photovoltaic cells

IEC TS 63202-4:2022 describes procedures for measuring the light and elevated temperature induced degradation (LETID) of crystalline silicon photovoltaic (PV) cells in simulated sunlight. The requirements for measuring initial light induced degradation (LID) of crystalline silicon PV cells are covered by IEC 63202-1, where LID degradation risk of PV cells under moderate temperature and initial durations within termination criteria of 20 kWh·m-2 are evaluated. The procedures described in this document are to evaluate the degradation behaviour of PV cells under elevated temperature and longer duration of light irradiation. The procedures described in this document can be used to detect the LETID risks of PV cells [2],[3] and to judge the effectiveness of LETID mitigation measures, e.g. quick test for production monitoring, thus helping improve the energy yield of PV modules.

General Information

• Status: Published
• Publication Date: 27-Jun-2022
• ICS: 27.160 - Solar energy engineering
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: WG 8 - TC 82/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 25-Jul-2022
• Completion Date: 28-Jun-2022

Standards Content (Sample)

IEC TS 63202-4
®

Edition 1.0 2022-06
TECHNICAL
SPECIFICATION

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inside


Photovoltaic cells –
Part 4: Measurement of light and elevated temperature induced degradation of
crystalline silicon photovoltaic cells
IEC TS 63202-4:2022-06(en)

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IEC TS 63202-4

®


Edition 1.0 2022-06




TECHNICAL



SPECIFICATION








colour

inside










Photovoltaic cells –

Part 4: Measurement of light and elevated temperature induced degradation of

crystalline silicon photovoltaic cells

























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ICS 27.160 ISBN 978-2-8322-3924-7




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– 2 – IEC TS 63202-4:2022 © IEC 2022
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Apparatus . 6
5 Sampling . 6
6 Measurement . 7
7 Report . 8
Annex A (informative) LETID behaviour . 9
Bibliography . 10

Figure A.1 – Dependence of ΔP on cumulative irradiation dose . 9
max

Table A.1 – Summary of the LETID behaviours for the curves in Figure A.1 .
...