ASTM E927 - 10

    Standard Specification for Solar Simulation for Terrestrial Photovoltaic Testing

    Active Standard ASTM E927 | Developed by Subcommittee: E44.09

    Book of Standards Volume: 12.02


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    Abstract

    This specification provides the performance requirements and parameters used for classifying both pulsed and steady state solar simulators intended for indoor testing of photovoltaic devices (solar cells or modules), according to their spectral match to a reference spectral irradiance, non-uniformity of spatial irradiance, and temporal instability of irradiance. The classification of a solar simulator is based on the size of the test plane, and does not provide any information about electrical measurement errors that are related to photovoltaic performance measurements obtained with a classified solar simulator.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification provides means for classifying solar simulators intended for indoor testing of photovoltaic devices (solar cells or modules), according to their spectral match to a reference spectral irradiance, non-uniformity of spatial irradiance, and temporal instability of irradiance.

    1.2 Testing of photovoltaic devices may require the use of solar simulators. Test Methods that require specific classification of simulators as defined in this specification include Test Methods E948, E1036, and E1362.

    1.3 This standard is applicable to both pulsed and steady state simulators and includes recommended test requirements used for classifying such simulators.

    1.4 A solar simulator usually consists of three major 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 in Section 4; and (3) the necessary controls to operate the simulator, adjust irradiance, etc.

    1.5 A light source that does not meet all of the defined requirements for classification presented in this document may not be referred to as a solar simulator.

    1.6 Spectral irradiance classifications are provided for Air Mass 1.5 direct and global (as defined in Tables G173), or Air Mass 0 (AM0, as defined in Standard E490).

    1.7 The classification of a solar simulator is based on the size of the test plane; simulators with smaller test plane areas have tighter specifications for non-uniformity of spatial irradiance.

    1.8 The data acquisition system may affect the ability to synchronize electrical measurements with variations in irradiance and therefore may be included in this specification. In all cases, the manufacturer must specify with the temporal instability classification: (1) how the classification was determined; and (2) the conditions under which the classification was determined.

    1.9 The classification of a solar simulator does not provide any information about electrical measurement errors that are related to photovoltaic performance measurements obtained with a classified solar simulator. Such errors are dependent on the actual instrumentation and procedures used.

    1.10 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.11 The following precautionary caveat pertains only to the hazards portion, Section 6, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E490 Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables

    E772 Terminology of Solar Energy Conversion

    E948 Test Method for Electrical Performance of Photovoltaic Cells Using Reference Cells Under Simulated Sunlight

    E1036 Test Methods for Electrical Performance of Nonconcentrator Terrestrial Photovoltaic Modules and Arrays Using Reference Cells

    E1328 Terminology Relating to Photovoltaic Solar Energy Conversion

    E1362 Test Method for Calibration of Non-Concentrator Photovoltaic Secondary Reference Cells

    G138 Test Method for Calibration of a Spectroradiometer Using a Standard Source of Irradiance

    G173 Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37 Tilted Surface

    IEC Standard

    IEC60904-9 Photovoltaic Devices--Part 9: Solar Simulator Performance Requirements


    ICS Code

    ICS Number Code 27.160 (Solar energy engineering)

    UNSPSC Code

    UNSPSC Code 32111701(Photovoltaic cells)


    DOI: 10.1520/E0927-10

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