Dreger, M.M.DregerWiesenfarth, MaikeMaikeWiesenfarthSchmid, T.T.SchmidBett, Andreas W.Andreas W.Bett2022-03-121.5.20152013https://publica.fraunhofer.de/handle/publica/38233910.24406/publica-r-38233910.4229/28thEUPVSEC2013-1CV.6.27In high concentrating photovoltaic (HCPV) modules the solar radiation is focused on high efficient multi-junction solar cells. One option to distinguish between different system approaches is the applied optics. For example, Frensel lenses or parabolic mirrors can be used as primary optics. Another aspect of the module design is how the thermal energy is distributed. There are actively and passively cooled systems. In any case, the way of thermal management is essential for the high performance of the system. In this paper passively cooled systems with mirrors as primary optics are investigated. Different designs of modules with on-axis, off-axis and Cassegrain optics were chosen and evaluated in terms of thermal management, optical efficiency, acceptance angle and manufacturing efforts. For the analysis of the optical and thermal behavior, ray tracing and FEM simulations were applied. In terms of temperature of the solar cell the Cassegrain design has the lowest operating temperature as the heat spreader does not shade the primary optics and can be generously dimensioned. Comparing the acceptance angle and the optical efficiency a special on-axis design with the heat spreader assembled inside of the module performs best.enMaterialien - Solarzellen und TechnologieIII-V und Konzentrator-PhotovoltaikKonzentrator-BauelementeKonzentrator-OptikHochkonzentrierende Systeme (HCPV)Moduledesignopticscoolingmanagementconference paper