Design and Modeling of a High Efficiency Hybrid Photovoltaic-Photothermal Concentrator (PVPTC) System

Authors

K. H. Montgomery, C. Heredia, and J. M. Woodall

Publication

39th IEEE Photovoltaic Specialists Conference, Tampa, FL, 2013.

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Abstract

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.

Keywords

gallium phosphide, hybrid power systems, photovoltaic systems, silicon.

DOI

10.1109/PVSC.2013.6744483

Citation

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.