Design and Modeling of a High Efficiency Hybrid Photovoltaic-Photothermal Concentrator (PVPTC) System
K. H. Montgomery, C. Heredia, and J. M. Woodall
39th IEEE Photovoltaic Specialists Conference, Tampa, FL, 2013.
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In this work, a hybrid solar power conversion system is proposed. Novel designs of concentrator-based hybrid photovoltaic-photothermal systems are assessed and modeled. In building upon the robustness of GaP and Si, we propose a system that combines a GaP photovoltaic cell in tandem with a Si selective absorber to drive a heat engine. We have developed a model to account for temperature dependencies of both components and determined that system efficiencies over 55% can be reached when operating at moderate temperatures. The benefit to this approach is in a simplified design that does not require ultra-high concentration and eliminates the need for passive or active cooling mechanisms.
gallium phosphide, hybrid power systems, photovoltaic systems, silicon.
K. H. Montgomery, C. Heredia, and J. M. Woodall, “Design and Modeling of a High Efficiency Hybrid Photovoltaic-Photothermal Concentrator (PVPTC) System,” presented at the 39th IEEE Photovoltaic Specialists Conference, Tampa, FL, 2013.