Linearity testing of photovoltaic cells : preprint / K. Emery [and others].

Format:

Book

Government document

Contributor:

Emery, K. (Keith)

National Renewable Energy Laboratory (U.S.)

Series:

Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-520-39854.

NREL/CP ; 520-39854

Language:

English

Subjects (All):

Photovoltaic cells--Testing.

Photovoltaic cells.

Solar cells--Standards.

Solar cells.

Physical Description:

1 online resource (4 pages)

Place of Publication:

Golden, CO : National Renewable Energy Laboratory, [2006]

Summary:

Photovoltaic devices are rated in terms of their peak power with respect to a specific spectrum, total irradiance, and temperature. To rate photovoltaic devices, a reference detector is required whose response is linear with total irradiance. This paper describes a procedure to determine the linearity of the short-circuit current (Isc) versus the total irradiance (Etot) by illuminating a reference cell with two lamps. A device is linear if the current measured with both lamps illuminating the cell is the same as the sum of the currents with each lamp illuminating the cell. The two-lamp method is insensitive to the light spectra or spatial nonuniformity changing with irradiance. The two-lamp method is rapid, easy to implement, and does not require operator intervention to change the irradiances. The presence of room light only limits the lowest irradiance that can be evaluated. Unlike other methods, the two-lamp method does not allow the current to be corrected for nonlinear effects.

Notes:

Title from title screen (viewed September 21, 2007).

"Presented at the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4), Waikoloa, Hawaii May 7-12, 2006."

"May 2006."

OCLC:

173147017