IEC 60904-3:2016 PDF

Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data

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Title (English):

IEC 60904-3:2016

Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 200
Publication date:: April 15, 2016
Edition:: IEC IS 60904 edition 3 version 1
ICS:: 27.160

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Description (English):

IEC 60904-3:2016 describes basic measurement principles for determining the electrical output of PV devices. The principles given in this standard are designed to relate the performance rating of PV devices to a common reference terrestrial solar spectral irradiance distribution. The reference terrestrial solar spectral irradiance distribution is given in this standard in order to classify solar simulators according to the spectral performance requirements contained in IEC 60904-9. The principles contained in this standard cover testing in both natural and simulated sunlight. This new edition includes the following significant technical changes with respect to the previous edition: - the direct beam irradiance corresponding to the global irradiance was included; - the term "Global photon irradiance" was changed to "Global photon flux"; - the titles of some clauses have been changed (others have been added) in accordance with the usual structure of IEC standards.

Technical details

Technical committee: TC 82 - Solar photovoltaic energy systems
SKU: IEC 60904-3:2016

Abstract

Overview

IEC 60904-3:2016 - "Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data" defines the basic measurement principles to determine the electrical output of PV devices and to relate those measurements to a common reference terrestrial solar spectral irradiance. The standard provides the reference spectral distributions (AM1.5 global and direct) used to classify solar simulators and to correct measured PV performance for spectral effects. It applies to solar cells, sub-assemblies, modules and systems tested in natural or simulated sunlight.

Key topics and requirements

Reference spectral irradiance distributions: Tabulated global (direct + diffuse) and direct spectra are provided (AM1.5-type) for use in performance rating and simulator classification.
Measurement principles: Procedures to measure I–V characteristics under stable irradiance and known device temperature; measurements are then corrected to standard test conditions (STC) as applicable.
Spectral mismatch and corrections: Users must account for spectral mismatch between test light and reference spectrum; IEC 60904-7 is referenced for spectral mismatch computation.
Instruments and detectors: Guidance on using PV reference devices (with known spectral responsivity) or thermopile radiometers (pyranometers) for irradiance measurement; reference devices should meet IEC 60904-2.
Spectral responsivity: Measurement of device spectral response is covered in IEC 60904-8 and is essential for accurate spectral corrections.
Solar simulator classification: Reference spectra are used to classify solar simulators per IEC 60904-9 spectral requirements.
Modelling and data: The standard’s reference spectra were generated using the SMARTS spectral model (version cited) under specified atmospheric conditions; the standard includes an accompanying spreadsheet with spectral data.
Edition changes: This edition adds the direct-beam spectrum corresponding to the global spectrum and updates terminology (e.g., “global photon flux”).

Practical applications and users

PV manufacturers - to rate modules and cells to STC and to validate product datasheets.
Test laboratories and certification bodies - to perform repeatable electrical measurements and to classify solar simulators.
Solar simulator and test-equipment manufacturers - to design and verify spectral performance.
Researchers and system designers - to model real-world performance accounting for spectral effects and to compute spectral mismatch corrections.

Related standards (IEC 60904 series)

IEC 60904-1 (I–V measurement procedures)
IEC 60904-2 (reference solar devices)
IEC 60904-7 (spectral mismatch computation)
IEC 60904-8 (spectral responsivity)
IEC 60904-9 (solar simulator performance)
IEC 60891 (temperature & irradiance corrections)

Keywords: IEC 60904-3:2016, photovoltaic measurement, reference spectral irradiance, AM1.5, solar simulators, spectral mismatch, SMARTS model, PV testing, I–V characteristics.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Reference spectral irradiance distributions: Tabulated global (direct + diffuse) and direct spectra are provided (AM1.5-type) for use in performance rating and simulator classification.
Measurement principles: Procedures to measure I–V characteristics under stable irradiance and known device temperature; measurements are then corrected to standard test conditions (STC) as applicable.
Spectral mismatch and corrections: Users must account for spectral mismatch between test light and reference spectrum; IEC 60904-7 is referenced for spectral mismatch computation.
Instruments and detectors: Guidance on using PV reference devices (with known spectral responsivity) or thermopile radiometers (pyranometers) for irradiance measurement; reference devices should meet IEC 60904-2.
Spectral responsivity: Measurement of device spectral response is covered in IEC 60904-8 and is essential for accurate spectral corrections.
Solar simulator classification: Reference spectra are used to classify solar simulators per IEC 60904-9 spectral requirements.
Modelling and data: The standard’s reference spectra were generated using the SMARTS spectral model (version cited) under specified atmospheric conditions; the standard includes an accompanying spreadsheet with spectral data.
Edition changes: This edition adds the direct-beam spectrum corresponding to the global spectrum and updates terminology (e.g., “global photon flux”).

Practical applications and users

PV manufacturers - to rate modules and cells to STC and to validate product datasheets.
Test laboratories and certification bodies - to perform repeatable electrical measurements and to classify solar simulators.
Solar simulator and test-equipment manufacturers - to design and verify spectral performance.
Researchers and system designers - to model real-world performance accounting for spectral effects and to compute spectral mismatch corrections.

Related standards (IEC 60904 series)

IEC 60904-1 (I–V measurement procedures)
IEC 60904-2 (reference solar devices)
IEC 60904-7 (spectral mismatch computation)
IEC 60904-8 (spectral responsivity)
IEC 60904-9 (solar simulator performance)
IEC 60891 (temperature & irradiance corrections)

Keywords: IEC 60904-3:2016, photovoltaic measurement, reference spectral irradiance, AM1.5, solar simulators, spectral mismatch, SMARTS model, PV testing, I–V characteristics.

IEC 60904-3:2016 PDF

Technical details

Abstract

Overview

Key topics and requirements

Practical applications and users

Related standards (IEC 60904 series)

Related standards

Abstract

Overview

Key topics and requirements

Practical applications and users

Related standards (IEC 60904 series)

Related standards

Photovoltaic devices - Computation of the spectral mismatch correction for measurements of photovoltaic devic…

Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices

Photovoltaic devices - Part 8-1: Measurement of spectral responsivity of multi-junction photovoltaic (PV) dev…

Photovoltaic devices - Part 9: Classification of solar simulator characteristics

Photovoltaic devices - Part 10: Methods of linear dependence and linearity measurements

Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics