Photovoltaic superiority for Space Station Freedom power in the 21st century

Abstract

Complete power systems capable of delivering 75kW of continuous power in low earth orbit have been compared using current available data. Performance, liabilities, and advantages are discussed for a shielded nuclear system, solar dynamic system, and photovoltaic systems, both current Freedom Si design and near term GaAslGe with NaS storage. System components include power generation, storage (if required) heat rejection, power conversion and distribution, structural support, and shielding (if required). Performance parameters indicate the substantial advantage of the GaAs/Ge photovoltaic system without altering the support structure of the current Freedom design.

Attitude Determination in Space with Ambient Light Sensors using Machine Learning for Solar Cell Characterization

“…[20,21] Taking these novelties together, the technologies have the potential to become the next generation of space solar cells. [22,23] Previous tests of the novel materials range from laboratory tests that simulate space conditions, over near-space missions on stratospheric balloon flights to rocket flights to space. [24][25][26][27][28][29][30] However, further tests that focus on their application in their designated role are necessary before these next-generation solar cells can make the step from experimental technologies to their integration as conventional space technologies.…”