TOKYO —Toshiba Corporation has developed the world’s first microwave remote power transfer system that can wirelessly transfer power to remote locations while coexisting with wireless LANs (Wi-Fi). The developed system includes interference avoidance functions (*1) that allow efficient power transfer to targeted locations without disrupting local wireless LAN communications, along with technologies that enable efficient power reception regardless of the receiving antenna’s orientation (*2).
The practical application of remote power supplies requires the prevention of interference so that the power supply can coexist with wireless LANs. Previous technologies have yet to achieve such coexistence, but this new development now allows interference avoidance by detecting the presence or absence of wireless LAN signals in the vicinity and controlling the power supply beam accordingly. Highly efficient and stable power reception was achieved by combining vertical (vertically polarized) and horizontal (horizontally polarized) radio waves, and the feasibility of receiving approximately twice the average power of conventional systems was demonstrated.
This newly developed technology is also expected to contribute to digitalization and labor-saving initiatives at manufacturing sites and distribution warehouses. Such initiatives are made possible through the use of wireless LANs and numerous IoT sensors for industrial equipment. The developed technology makes it possible to operate sensors without batteries, allowing efficient and continuous sensing at continuously operating manufacturing sites and improved productivity through advances in digitalization and labor savings, while also contributing to efforts toward realizing a carbon-neutral society (*3).
Toshiba will present details of this technology at the 2023 Asia-Pacific Microwave Conference (APMC 2023), an international conference to be held in Taipei, Taiwan, on December 6 and 8.
This development was partly supported by Council for Science, Technology and Innovation (CSTI), Cross-ministerial Strategic Innovation Promotion Program (SIP), “Energy systems of an Internet of Energy (IoE) society” (Funding agency: JST), FY2018–2022.