Designing an autonomous power system for a stand-alone heliostat
2016
Concentrated Solar Power (CSP) offers a number of advantages over photovoltaic at large scale power generation, such as lower cost and the option of thermal energy storage. However, the costs of a power tower plant are dominated by heliostats, which are usually 50% of the entire facility. NASA 5 s Jet Propulsion Laboratory was awarded funding by the DOE SunShot Initiative to develop a low-cost, rigid foam-based solar concentrator to meet installed cost goals of S75/m 2 versus current costs of $200–250/m 2 . One of the key features of the newly developed design is the stand-alone power system based on PV-panels and a Li-Fe-battery, which reduces operation and installation costs. The approach was validated by building and testing of a small-scale (6m 2 ) heliostat prototype. The design process and findings are described in detail.
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