Development of Parallel DC-DC Converters for Multi-Energy Supply Systems

Antarctic research is critical for advancing our understanding of the Earth’s climate system. However, the extreme environmental conditions impose stringent demands on power supply systems for scientific equipment. While traditional fossil fuel-based generators suffer from high operational costs and environmental pollution, Antarctica’s abundant wind and solar energy resources offer a sustainable alternative for clean energy integration. However, the existing power supply system generally adopts a single energy switching strategy, which is unable to realize the parallel output of multiple energy sources, and the core bottleneck lies in the current equalization problem of parallel DC-DC converters. In this paper, a parallel DC-DC converter based on master-slave control strategy is proposed to solve the power superposition problem when multiple modules are connected in parallel through constant voltage/constant current dual-mode PI control. Experiments show that the design can stably realize multi-input power superposition under sudden load change conditions, with output voltage fluctuation of less than 2% and system efficiency of more than 90%. This study provides an efficient and reliable solution for the Antarctic multi-energy synergistic power supply, which is of great engineering value to enhance the energy redundancy and environmental adaptability of polar research equipment.