What is BS EN 60891 - Temperature and irradiance corrections of PV devices about?
BS EN 60891 is a European Standard that specifies procedures to be followed for temperature and irradiance corrections to the measured I-V (current-voltage) characteristics of photovoltaic devices.
BS EN 60891 also defines the procedures used to determine factors relevant for these corrections. Requirements for I-V measurement of photovoltaic devices are laid down in BS EN IEC 60904-1.
The photovoltaic devices include a single solar cell with or without a protective cover, a sub-assembly of solar cells, or a module. A different set of relevant parameters for I-V correction applies for each type of device. Although the determination of temperature coefficients for a module (or sub-assembly of cells) may be calculated from single cell measurements, it should be noted that the internal series resistance and curve correction factor should be separately measured for a module or subassembly of cells.
Note: Care should be taken regarding the use of I-V correction parameters. The parameters are valid for the PV device for which they have been measured. Variations may occur within a production lot or the type of class.
Who is BS EN 60891 - Temperature and irradiance corrections of PV devices for?
BS EN 60891 on temperature and irradiance corrections of PV devices is useful for:
- PV module manufacturers
- PV power system manufacturers
- Photoelectric device manufacturers
- The solar energy engineering industry
- Product designers
- Quality assurance and testing personnel
Why should you use BS EN 60891 - Temperature and irradiance corrections of PV devices?
I-V (current-voltage) characteristics are an important tool to estimate the performance of Photovoltaic devices and strings.
BS EN 60891 provides you with methods for temperature and irradiance corrections for measured I-V (current-voltage) characteristics. BS EN 60891 also guides you with the determination of the curve correction factor κ and κ′, determination of internal series resistance RS and R′S, and determination of temperature coefficients for photovoltaic devices.
BS EN 60891 allows you to detect a decrease in performance and control the temperature and irradiance degradation of photovoltaic modules, and helps you to improve the performance of photovoltaic modules.
If you are a manufacturer, BS EN 60891 can help you improve the power generation of photovoltaic devices.
What’s changed since the last update?
BS EN 60891:2010 supersedes BS EN 60891:1995 which is withdrawn. BS EN 60891:2010 includes some technical changes with respect to BS EN 60891:1995. These include:
- Extends existing translation procedure to irradiance change during I-V measurement
- Adds 2 new translation procedures
- Revises procedure for determination of temperature coefficients to include PV modules
- Defines new procedure for determination of internal series resistance
- Defines new procedure for determination of curve correction factor
