In the realm of space-based energy solutions, a team of researchers from the China Academy of Space Technology Corporation, led by Xinbin Hou, has been exploring innovative concepts to harness solar power in space and transmit it to Earth. Their latest work focuses on an updated modular multirotary joints solar power satellite (MMR SPS) concept, aiming to address key challenges in space solar power (SSP) systems.
The researchers propose a modular design for solar power satellites, which consist of multiple modules. Each module includes a solar subpanel and an antenna subpanel connected via conductive rotary joints. This modular approach allows for shorter distance direct current (DC) electric power transmission, reducing the complexity and increasing the reliability of the system. The MMR SPS concept also employs retroreflective beamforming to ensure precise steering of the microwave power beam to the ground receiving aperture.
One of the significant challenges in SSP systems is the long-distance DC electric power transmission and high-precision microwave power transmission. The MMR SPS concept addresses these challenges by using multiple modules, each with shorter transmission distances, and retroreflective beamforming for accurate beam steering. The researchers have developed a numerical calculation model that includes near-field effects to analyze and validate the performance of using retroreflective beamforming to compensate for antenna position deviations.
The article also outlines transportation and assembly methods for the MMR SPS and considers the full life cycle cost. This comprehensive approach ensures that the concept is not only technically feasible but also economically viable. The research was published in the journal Acta Astronautica, providing a valuable contribution to the ongoing efforts in developing space-based energy solutions.
For the energy industry, this research highlights the potential of space-based solar power as a clean and reliable energy source. The modular design and innovative transmission methods proposed in the MMR SPS concept could pave the way for more efficient and cost-effective SSP systems. As the world seeks to transition to renewable energy sources, space solar power could play a significant role in meeting global energy demands while mitigating the impacts of climate change.
This article is based on research available at arXiv.