Invited Speaker

Dr. Xianlong Meng

Dr. Xianlong Meng

Northwestern Polytechnical University, China
Speech Title: Optical Optimization Model for Space-based Solar Power Station

Abstract: SPS-ALPHA, a novel concept of Space-based Solar Power Station (SSPS), is composed by a large number of small modules that enables the modularity and low cost of machining/space transport. The optical performance of SPS-ALPHA Mark-I type had been investigated in last year. It was found that the cosine effect and blocking shadow effect of ray path exist in the Mark-I type model and make the optical efficiency unstable on orbit. The totally new optical model for SPS-ALPHA Mark-Ⅱ, which adopts conical structural system, would be developed in current study, in order to find the possibility of a better solution for improving the optical efficiency. The source-target mapping would be established considering the effect of solar cone angle. A two-step feedback method is adopted, including initial Monte-Carlo ray tracing (MCRT) process, source-target re-mapping by Ant Colony Optimization (ACO) algorithm and second MCRT simulation. Finally the optimal design parameters and adjustment strategy of SPS-ALPHA Mark-Ⅱ would be discussed at different tracking angle and structrual parameters. This method can mostly ensure high optical efficiency at every moment on orbit.