A synchronous placement and size-based multi-objective optimization method for heat dissipation design on antenna module of space solar power satellite

Abstract

As a potential space building for supplying solar energy, space solar power satellite (SSPS) has become an important aspect of its feasibility study. For such a high-power system, the heat dissipation problem caused by the large external heat flux and internal heat source must be resolved. This study investigates an optimum layout for heat dissipation of an antenna module in SSPS exposed to an extreme thermal environment using optimization with an iterative two-layer design. A synchronous placement and size-based multi-objective optimization problem is constructed with temperature constraints to balance the module’s mass and temperature distribution with the optimum location, placement, and size. To improve the solution efficiency, an iterative two-layer heat dissipation design is developed to avoid the limitations of directly solving the high-dimensional optimization. The first-layer design optimizes the placement and basic size of the thermal control equipment using the constrained NSGA-II, and the size factors are continually optimized in the second-layer design. This innovative design can not only overcome the large-scale calculation, but also meet the actual engineering needs, which optimize the key indicators and balance accuracy and efficiency. The proposed method with statistical analysis is applied to realize 2.6% weight reduction and acceptable temperature distribution with effectiveness.