Validation of the space nanogrid concept for spacececraft power systems

The concept of space nanogrids offers a modular and scalable approach to power generation and distribution in small spacecraft, addressing the increasing demand for reliable and efficient energy systems. This paper demonstrates the feasibility of space nanogrids through a practical case study of a small satellite mission designed for space environment monitoring and technology demonstration. The satellite's power system is based on Solar Module Integrated Converters (SMICs), a decentralized power generation architecture that enhances redundancy and adaptability. The study covers the full lifecycle of the space nanogrid, from design and integration to in-orbit validation, highlighting its ability to maintain stable power delivery under dynamic space conditions. In-orbit data confirms the system's capacity to efficiently generate, regulate, and distribute power while adapting to variations in solar exposure. The findings provide empirical support for the space nanogrid concept, demonstrating its advantages in reliability, modularity, and operational flexibility. While this study focuses on power generation, future work will explore advancements in energy storage to further enhance the capabilities of space nanogrids for next-generation small satellite missions.