The current status of microwave power transmission for SSPS

Paper number

IAC-16,C3,2,2,x32580

Coauthor

Mr. Shoichiro Mihara, Japan Space Systems (J-spacesystems), Japan

Coauthor

Mr. Kazuhiko Maekawa, Japan Space Systems (J-spacesystems), Japan

Coauthor

Mr. Masao Sato, Japan Space Systems (J-spacesystems), Japan

Coauthor

Mr. Shuji Nakamura, Japan Space Systems (J-spacesystems), Japan

Coauthor

Mr. Kenji Sasaki, Japan Space Systems (J-spacesystems), Japan

Coauthor

Dr. Yukihiro Homma, Mitsubishi Electric Corporation, Japan

Coauthor

Dr. Masatake Hangai, Mitsubishi Electric Corporation, Japan

Coauthor

Mr. Takuro Sasaki, Mitsubishi Electric Corporation, Japan

Coauthor

Mr. Yuichiro Ozawa, IHI Aerospace Co, Ltd., Japan

Coauthor

Mr. Naohiro Tanaka, IHI Aerospace Co, Ltd., Japan

Coauthor

Mr. Teruo Fujiwara, IHI Aerospace Co, Ltd., Japan

Coauthor

Mr. Kenichi Anma, Mitsubishi Heavy Industries, Ltd., Japan

Coauthor

Prof. Shigeo Kawasaki, JAXA, Japan

Coauthor

Dr. Akihira Miyachi, JAXA, Japan

Coauthor

Dr. Tanaka Koji, ISAS/JAXA, Japan

Year

2016

Abstract

Japan Space Systems (J-SPACESYSTEMS) has been studying wireless power transmission (WPT) from the beginning of 2000. In this study, we have focused on the microwave power transmission as a key technology for the realization of future Space Solar Power System (SSPS). J-SPACESYSTEMS group have been kept on developing high efficient microwave transmission and receive system. The result of the first stage development was demonstrated as a ground wireless transmission experiment in March 2015. We have conducted the ground WPT experiments project which includes kW level electrical power, under the contract of Ministry of Economy, Trade and Industry (METI) from FY2009 to FY2014. More than 60% conversion efficiency at the final high power unit of the transmission system was achieved by the result of the first stage development. The second stage development has already started. We are reviewing road map for development of Space Solar Power System, SSPS. We keep improving efficiency of microwave power transmission and receive. Our current target of the conversion efficiency at the final stage transmitter is 80%. We are trying to improve total DC-RF conversion efficiency at the transmission section and RF-DC conversion efficiency at the receiving section. As development of thinner transmission panel with light weight and higher conversion efficiency is the essential part to realize SSPS, we are applying HySIC, Hybrid Semiconductor Integrated Circuit. The application of microwave power transmission system to none space field as spin off can provide short term result to the daily life.

Abstract document

IAC-16,C3,2,2,x32580.brief.pdf

Manuscript document

IAC-16,C3,2,2,x32580.pdf (🔒 authorized access only).

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