Journal
7TH INTERNATIONAL CONFERENCE ON CONCENTRATING PHOTOVOLTAIC SYSTEMS (CPV-7)
Volume 1407, Issue -, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3658334
Keywords
CPV; modules; secondary; high efficiency
Categories
Funding
- European Union under the 7th framework program within the NACIR [226409]
- The Federal Ministry for Environment
- Nature Conservation and Nuclear Safety within the CPVGen2 [FKZ 0327662A]
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This paper presents the new module generation (CX-75-III), which was developed in an all-embracing cost optimization. The single primary lens was refined for optical efficiency and its size increased to 5.7 x 5.7 cm(2), thus dramatically reducing the part count. Thermal simulations were used in order to dimension the heat spreader and ensure the reliability due to a low cell temperature. Furthermore, recent developments for cost optimization and high module efficiencies are presented. Results on prototype modules with a new heat spreader design, a new primary lens and also with refractive secondary optical elements are shown. The use of reflective secondaries has lead to an STC efficiency of 30.6%. Furthermore, different anti-reflection coatings have been examined in order to assess their impact on performance and reliability.
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