Nuclear-Battery Hybrid System Optimized for Lunar Microgrid Power

⚡ AI Executive Summary

Researchers have developed a multi-physics modeling framework for a lunar microgrid that combines a helium-xenon nuclear reactor with battery storage to meet the conflicting demands of high instantaneous power and extended autonomy in space operations. The model, validated against industry-standard nuclear codes, demonstrates that a hierarchical control strategy can balance fast-response battery discharge with slower nuclear reactor regulation while maintaining voltage and temperature stability across representative lunar duty cycles. The findings suggest that careful mass optimization of such hybrid systems could significantly reduce spacecraft weight—a critical factor in space missions where launch mass directly correlates to mission cost and feasibility. This work indicates that nuclear-battery integration offers a viable path for powering sustained lunar operations, though system benefits depend heavily on load profile characteristics, particularly the ratio of peak-to-valley demand and duration of high-power transients. For terrestrial microgrids and remote installations, the control methodology may offer insights into managing disparate energy sources with vastly different response timescales.