Abstract
The Space Solar Power Satellite is an ultra-large space structure, which collects sunlight directly in space and then transmits it into the ground. Since the idea was invented in 1968, scientists around the world have proposed several typical conceptual design models. Nevertheless, the conceptual models have not been implemented for technological, manufacturing, and cost reasons. This paper presents a novel Space Solar Power Satellite scheme with modular line-focused concentrators and low concentration photovoltaic modules. First, the line-focused mode is analyzed and the optical performance of the circular trough concentrator is evaluated via ray-trace technique. Then, shape optimization for the cell array based on the Bézier curve is carried out to improve the optical property. Numerical examples indicate that the optimized cell array could obtain high power collection efficiency and suitable energy distribution. Moreover, the area of the photovoltaic cell array is reduced, which is conducive to cost reduction. Furthermore, modular design is conducted on the circular trough concentrator. Finally, the primary scheme of the novel Space Solar Power Satellite is designed with the previous modular concentrator and optimized cell array.
Highlights
The Space Solar Power Satellite (SSPS) was first invited by P
For the restrictions of day and night and climate, the average power density of the ground-based solar energy is limited to about 300~400 W/m2, while the value of the space-based solar energy is stabilized at 1367 W/m2 [2]
Hyper-modular design, distributed focus, thin-film reflector, retrodirective phase-controlled Wireless Power Transmission (WPT) were all introduced to decrease the difficulty on construction whilst increasing the system performance
Summary
The Space Solar Power Satellite (SSPS) was first invited by P. Hyper-modular design, distributed focus, thin-film reflector, retrodirective phase-controlled Wireless Power Transmission (WPT) were all introduced to decrease the difficulty on construction whilst increasing the system performance. Great efforts have been implemented on the conceptual design of the SSPS, large scale, large fluctuation on solar energy gathering, difficult control strategies, low collection efficiency, and other factors resist the previous conceptual models being realized [7]. Self-shadowing Thin-film PV array, large rotating disc Distribution uniformity, complicated strategies. Concerning the previous factors, the authors propose a novel SSPS model, which is expected to increase the system efficiency and energy distribution uniformity, and decrease the challenges on thermal management and solar tracking. The primary structure of the novel SSPS is designed with the previous modular concentrator and optimized cell array
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