Academia.eduAcademia.edu

Figure 4 – uploaded by Domenico Chianese

See full PDFdownloadDownload figure
A comparison of the real module energy production measured at LEEE-TISO with the matrix method calculated energy is made for different data sets (LEEE-TISO outdoor, ESTI outdoor and ESTI indoor). Table IV summarises the energy predictions obtained by using the different LEEE- TISO and ESTI indoor and outdoor measured power matrices and the percent differences from the energy actually measured for the various cases are also reported.

Table 4 A comparison of the real module energy production measured at LEEE-TISO with the matrix method calculated energy is made for different data sets (LEEE-TISO outdoor, ESTI outdoor and ESTI indoor). Table IV summarises the energy predictions obtained by using the different LEEE- TISO and ESTI indoor and outdoor measured power matrices and the percent differences from the energy actually measured for the various cases are also reported.

Related Figures (4)

Fig. 1 3-Dimensional visualisation of the indoor measured matrix and fitted performance surface The complete indoor measured matrix is shown raphically in Fig. 1.
Fig. 1 3-Dimensional visualisation of the indoor measured matrix and fitted performance surface The complete indoor measured matrix is shown raphically in Fig. 1.
Table II. Matrix of indoor measured power [W] as a function of irradiance and temperature [Wim , °C]. The module was characterised using standard indoor measurement methods employing pulsed solar simulators at ESTI. In particular, the module was characterised at each point on a 13 x 9 matrix of irradiances and temperatures. Table II shows the measured power for a subset of 72 of these measurement points. The irradiance is varied by measuring the I-V curve at different parts of the decaying lamp pulse and module temperature is varied by placing the module within a temperature controlled chamber fitted with a quartz window. This method may be expected to lead to a degree of spectral variation across the matrix, but this does not appear to have had a significant influence on the results.
Table II. Matrix of indoor measured power [W] as a function of irradiance and temperature [Wim , °C]. The module was characterised using standard indoor measurement methods employing pulsed solar simulators at ESTI. In particular, the module was characterised at each point on a 13 x 9 matrix of irradiances and temperatures. Table II shows the measured power for a subset of 72 of these measurement points. The irradiance is varied by measuring the I-V curve at different parts of the decaying lamp pulse and module temperature is varied by placing the module within a temperature controlled chamber fitted with a quartz window. This method may be expected to lead to a degree of spectral variation across the matrix, but this does not appear to have had a significant influence on the results.
lable III. Difference in percent [%] between indoor and outdoor measured power matrices (TISO/ESTI reported in Table III for a reduced set of matrix points where it is seen that the differences are small. The LEEE- TISO data used are the extrapolated outdoor matrix which slightly increases the error in the inter-comparison. The ESTI data are the real outdoor measured power points resulting in some missing points in Table III. The average differences for the comparisons between the indoor data and the LEEE-TISO and ESTI outdoor data are 2.1 % and 1.3 % respectively.
lable III. Difference in percent [%] between indoor and outdoor measured power matrices (TISO/ESTI reported in Table III for a reduced set of matrix points where it is seen that the differences are small. The LEEE- TISO data used are the extrapolated outdoor matrix which slightly increases the error in the inter-comparison. The ESTI data are the real outdoor measured power points resulting in some missing points in Table III. The average differences for the comparisons between the indoor data and the LEEE-TISO and ESTI outdoor data are 2.1 % and 1.3 % respectively.
Related topics:
PV cell/module
580 California St., Suite 400
San Francisco, CA, 94104
© 2025 Academia. All rights reserved