Research and Analysis of Hybrid Power Distribution System for Advanced Fusion Power Supply

As fusion devices advance toward engineering application, traditional single-mode power distribution systems struggle to meet the demands of high-power density and fast dynamic response. Aiming at the scenarios of advanced fusion power supplies, this paper presents a novel topological architecture based on hybrid power distribution. By integration with the modern power electronics technology and multi-terminal DC interconnection, a hierarchical power distribution framework is designed to achieve dynamic coordinated control of the coil power supplies, heating systems, and energy storage devices. Furthermore, based on the data from the International Thermonuclear Experimental Reactor (ITER) project, the simulation analysis and multi-dimensional feasibility assessment are also conducted. The analysis results indicate that the high-voltage DC bus can provide stable power for medium-low voltage subnetworks, and the Total Harmonic Distortion of the current is 2.83%, which can significantly optimize the power quality. It will provide the theoretical support and engineering reference for the efficient and stable operation of future fusion reactors.