Thermal control design and analysis research on sandwich in module symmetrical concentrator architecture of space solar power satellite

Space solar power satellite (SSPS) has been widely defined as the collection of solar energy in space and its wireless transmission for use on earth. As the one of the of SSPS, module symmetrical concentrator (MSC) architecture has many advantages. This can avoid the need for a potentially failure-prone, large, conductive rotating joint and limit wiring mass. However, the thermal control system has severely restricted the rapid development of the MSC, especially in sandwich module, which is constituted by photovoltaic, DC to RF conversion and antenna element. Due to the existence of the 5 times concentration and solar external heat flux synchronously, the sandwich module will have very high temperature which will surpass the permissible temperature of the battery all the time. Based on the thermal requirement and technology index, the thermal design and analysis of a kilometer, gigawatt level sandwich module in MSC has investigated in this paper. The content has considered three classic thermal control forms of sandwich module: tile, step, and separation, and has also presented an elaborate design and analysis. At last, the result has shown the rationality of the three forms. It can be seen that only the separation form can sustain the sandwich module in a rational temperature interval.