Wireless Power Transfer in Space using Flexible, Lightweight, Coherent Arrays

Space solar power (SSP), envisioned for decades as a solution for continuous, stable, and dynamically dispatchable clean energy, has seen tremendous interest and a number of experimental demonstrations in the last few years. A practical implementation has been elusive to date, owing to the high laun...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Ayling, Alex, Fikes, Austin, Mizrahi, Oren S, Wu, Ailec, Raha Riazati, Brunet, Jesse, Abiri, Behrooz, Bohn, Florian, Gal-Katziri, Matan, Hashemi, Mohammed Reza M, Padmanabhan, Sharmila, Russell, Damon, Hajimiri, Ali
Format: Article
Language:English
Subjects:
Arrays
Clean energy
Ground stations
Integrated circuits
Launch costs
Lightweight
Low earth orbits
Photovoltaic cells
Solar generators
Wireless power transmission
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Summary:Space solar power (SSP), envisioned for decades as a solution for continuous, stable, and dynamically dispatchable clean energy, has seen tremendous interest and a number of experimental demonstrations in the last few years. A practical implementation has been elusive to date, owing to the high launch costs associated with heavy, rigid photovoltaic (PV) and wireless power transfer (WPT) arrays. Lightweight and flexible solutions for WPT have been demonstrated terrestrially but, to date, have not been deployed and tested in space. In this paper, we present an experimental space demonstration of a lightweight, flexible WPT array powered by custom radio frequency integrated circuits (RFICs). The transmit arrays, receive arrays, and the rest of the system were operated and tested for eight months in Low Earth Orbit (LEO). Results from these experiments, including pointing of the array's beam to Earth and its detection by a ground station, are presented and discussed in detail. Observations and results from this mission uncover existing strengths and weaknesses that inform future steps toward realizing SSP.
ISSN:2331-8422