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Technical Lecture

Power Electronics for Aerospace

T21.3 - Thermal Model and Optimization of a Multi-Winding Transformer for Lunar Surface Power Transmission

Wednesday, March 19, 2025
2:10 PM – 2:30 PM ET
Location: Level Three, A313
This digest introduces a heat transfer model and two optimized thermal designs for a multi-winding transformer utilized in lunar surface power applications. The transformer features a modular, multi-winding design, tailored for a Modular Multilevel dc-dc converter. The thermal model is introduced to analyze the transformer's heat dissipation performance in cryogenic (77 K) and vacuum conditions. To withstand the harsh environmental conditions, two different designs are proposed to improve heat dissipation. A 3D-printed ceramic bobbin is designed for high thermal conductivity and insulation capability. The proposed designs are analyzed and evaluated for thermal performance.