Mohedano, Rubén and Benitez Gimenez, Pablo and Zamora Herranz, Pablo and Miñano Dominguez, Juan Carlos and Mendes Lopes, Joao and Cvetkovic, Aleksandra and Vilaplana, J. and Hernández Sanz, Maikel and Chaves, Julio and Biot Marí, Guillermo
VentanaTM power train features and performance.
In: "9th International Conference on Concentrator Photovoltaic Systems", 15/04/2013 - 17/04/2013, Miyazaki, Japan. pp. 1-10.
Most CPV systems are based on Fresnel lenses. Among these, LPI-patented Fresnel-Köhler (FK) concentrator outstands owing to performance and practical reasons. The VentanaTM power train is the first off-the-shelf commercial product based on the FK and comprises both the primary (POE) lenses (a 36-units 1×1 m2 acrylic panel manufactured by EVONIK and 10×) and glass (or Savosil) secondary optics (SOE). This high concentration optical train (Cg=1,024×, ~250mm optical depth) fits with 5×5 mm2 (at least) solar cells. The optical train is the fruit of a 1-year development that has included design, modeling, prototyping and characterization, and through the process LPI had the opportunity to find out how well the actual performance correlates with models, but also learned practical aspects of a CPV system of this kind, some of which have very positive impact on system performance and reliability.