Field experiment of 800× off-axis XR-Köhler concentrator module on a carousel tracker | Zendy

Noboru Yamada | Zendy; Kazuya Okamoto | Zendy; Toshikazu Ijiro | Zendy; Takao Suzuki | Zendy; Toshihiko Maemura | Zendy; Takashi Kawaguchi | Zendy; Hiroshi Takahashi | Zendy; T. Sato | Zendy; Maikel Hernández | Zendy; Pablo Benı́tez | Zendy; Julio Chaves | Zendy; Aleksandra Cvetković | Zendy; Juan Vilaplana | Zendy; Rubén Mohedano | Zendy; João Mendes-Lopes | Zendy; Juan C. Miñano | Zendy

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Field experiment of 800× off-axis XR-Köhler concentrator module on a carousel tracker

Author(s) -

Noboru Yamada,

Kazuya Okamoto,

Toshikazu Ijiro,

Takao Suzuki,

Toshihiko Maemura,

Takashi Kawaguchi,

Hiroshi Takahashi,

T. Sato,

Maikel Hernández,

Pablo Benı́tez,

Julio Chaves,

Aleksandra Cvetković,

Juan Vilaplana,

Rubén Mohedano,

João Mendes-Lopes,

Juan C. Miñano

Publication year - 2013

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4822229

Subject(s) - concentrator , acceptance angle , optics , irradiance , materials science , nonimaging optics , solar cell , tracking (education) , photovoltaic system , range (aeronautics) , optoelectronics , physics , electrical engineering , engineering , composite material , psychology , pedagogy

This paper presents the design and preliminary experimental results of a concentrator-type photovoltaic module based on a free-form off-axis 800×XR-Köhler concentrator. The off-axis XR-Köhler concentrator is one of the advanced concentrators that perform high concentration with a large acceptance angle and excellent irradiance uniformity on a solar cell. As a result of on-sun characterization of the unglazed single-cell unit test rig, the temperature-corrected DC module efficiency was 32.2% at 25 °C without an anti-reflective (AR) coating on the secondary optics, and the acceptance angle was more than ±1.0°. In addition, the non-corrected DC efficiency of an individual cell in a glazed 8-cell unit module mounted on a carousel tracking system was measured. The individual efficiency deviated in the range of 24.3-27.4%, owing to the mirror shape and alignment errors. The resultant series-connected efficiency was approximately 25% at direct normal irradiation (DNI) of 770 W/m2

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