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Abstract

A method for comparing PV modules, based on an energy response analysis of extended outdoor measurements, has been developed at CEC JRC Ispra. Measured data are fitted to a linear model to obtain energy output densities, energy efficiencies, and, under specific assumptions, energy costs for reference days or years. The measurement system, which is fully automatic, keeps the modules operating at maximum power. An in-plane pyranometer measures the incident irradiance. Eventual errors due to the different spectral responses of the pyranometer and of the test modules are checked by measuring irradiance values through the short-circuit currents of modules of the same type. The measurement procedure, and the results obtained for 33 module types, are presented here. It is proposed to include this measurement as an option in the set of test procedures currently used in EUR-Specification 502.

Additional information

Authors: GIANOLI ROSSI E, JRC ISPRA ESTAB. (ITALY);KREBS K JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: 8TH PHOTOVOLTAIC SOLAR ENERGY CONFERENCE, FIRENZE (ITALY), MAY, 9-13, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3,-XI POB 1907, MENTIONING PAPER EN 33870 ORA
Availability: Can be ordered online
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