POWER SUPPLY SYSTEM

WIPO Patent Application WO/2017/169053

A1

The purpose of the present invention is to reduce energy loss caused by wasteful power consumption. This power supply system is provided with: a master device provided with a land power supply device 10 and a land control device 2; and sea floor devices 20 connected via a sea floor cable 16 from the master device. Each of the sea floor devices 20 is provided with: main DC/DC converters 64, 66, 164, 166 which convert first DC power supplied from the land power supply device 10 via the sea floor cable 16, into second DC power; output DC/DC converters 72-1 to 72-4 which convert the second DC power supplied from the respective main DC/DC converters into third DC power, and output the third DC power to observation devices 100-1 to 100-4; and switches SW65, 67, 165, 167 which are connected in parallel to primary sides of the respective main DC/DC converters, and which switch the primary sides between an open state and a closed state. The open state/closed state of each of the switches is switched in accordance with control data received from the land control device 2 via the sea floor cable 16.

KAWAGUCHI KATSUYOSHI (JP)
YOKOBIKI TAKASHI (JP)
HISHIKI KENJI (JP)
YONEZAKI YOSHITAKA (JP)
KATAYAMA TAKESHI (JP)
TAKEI SHINYA (JP)
KANO KATSUHIKO (JP)
MIZUKAWA TATSUYA (JP)
AOKI YASUO (JP)
ITO SHOTA (JP)

PCT/JP2017/002940

October 05, 2017

January 27, 2017

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JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECH (JP)
NEC CORP (JP)
NEC NETWORKS & SYSTEM INTEGRATION CORP (JP)
NEC MAGNUS COMMUNICATIONS LTD (JP)

H02M3/28; H02J1/00

JP2008193876A	2008-08-21
JP2000197347A	2000-07-14
JP2010016921A	2010-01-21

SUZUKI Hitoshi (JP)

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