GB/T 6495.10-2012
Photovoltaic devices.Part 10:Methods of linearity measurement (English Version)

Standard No.

GB/T 6495.10-2012

Language

Chinese, Available in English version

Release Date

2012

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 6495.10-2012

Scope

This part of GB/T 6495 specifies the test parameters to determine the linearity characteristic procedure of any parameter of photovoltaic devices, which is mainly used by calibration laboratories, component manufacturers and system designers. The evaluation of photovoltaic modules and system characteristics can be achieved by using linear equations, and the characteristics under another set of conditions can also be calculated from the characteristics under one set of temperature and irradiance conditions (see GB/T 6495.4 and GB/T 18210 ). This part of ISO 10000 specifies requirements and test methods for linearity characteristics to ensure satisfactory results for linear equations. These requirements limit the range of temperature and irradiance variations over which the linear equation can be applied. The measurement methods described in this section are applicable to all photovoltaic devices and can be extended to samples or comparable devices under the same technology. It should be used prior to all testing and correction procedures required for linear devices. The method used in this section is similar to the linear function determined in GB/T 6495.4. This linear (straight line) function is obtained by fitting a set of data points using the least squares fitting calculation method. The data variation from this function can also be calculated and the deviation from linearity expressed as an allowable percent variation. The linearity characteristics of a photovoltaic device are only considered when the following temperature and irradiance range conditions of interest are met. The typical minimum temperature range is 25℃～60℃, and the minimum irradiance range is 700W·m-2～1000W·m-2. a) For the short-circuit current curve relative to the change in irradiance, the normalized slope standard deviation (σS/m) is less than 0.02; b) For the open-circuit voltage curve relative to the logarithmic change in irradiance, the normalized slope standard deviation (σS/m) less than 0.05; c) Normalized slope standard deviation (σS/m) less than 0.1 for the open-circuit voltage and short-circuit current curves versus temperature change; d) Relative spectra for a certain wavelength range at a specific voltage The response varies by less than 5%. General procedures for determining the linearity of these and other performance parameters are given in Chapters 4 to 6.

GB/T 6495.10-2012 Referenced Document

• GB/T 18210-2000 Crystalline silicon photovoltaic(PV) array-On-site measurement of I-V characteristics
• GB/T 18911-2002 Thin-film terrestrial photovoltaic(PV) modules--Design qualification and type approval
• GB/T 6495.2-1996 Photovoltaic devices. Part 2: Requirements for reference solar cells
• GB/T 6495.3-1996 Photovoltaic devices. Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data
• GB/T 6495.4-1996 Procedures for temperature and irradiance corrections to measured I-V characteristics of crystalline silicon photovoltaic devices
• GB/T 6495.7-2006 Photovoltaic devices. Part 7: Computation of spectral mismatch error introduced in the testing of a photovoltaic device
• GB/T 6495.8-2002 Photovoltaic devices part 8: Measurement of spectral response of a photovoltaic(PV) device
• GB/T 6495.9-2006 Photovoltaic devices Part 9: Solar simulator performance requirements
• IEC 61215:1993 Crystalline silicon terrestrial photovoltaic (PV) modules; design qualification and type approval
• SJ/T 11209-1999 Photovoltaic devices.Part 6:Requirements for reference solar modules

GB/T 6495.10-2012 history

• 2012 GB/T 6495.10-2012 Photovoltaic devices.Part 10:Methods of linearity measurement

GB/T 6495.10-2012 -All Parts