High-Power Modular Power Conditioning and Distribution Unit for an Integrated Microsatellite Avionics Stack

This paper discusses the SuperNova power conditioning and distribution unit (PCDU) built by Bradford Space as part of their integrated avionics stack aiming to capture the growing market of microsatellite avionics. The SuperNova PCDU is a highly modular unit that is designed to handle power levels from 100 up to 1500 watts on both solar input and distributed output with a nominal 28 volts unregulated battery bus. The paper explores the innovative architectural decisions, design and testing methodology that enabled the unit to be optimized for compactness, lightness, and cost-effectiveness, positioning it as a leading product in the PCDU market for new-space applications.