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|1. (WO2017169053) POWER SUPPLY SYSTEM|
|Applicants:||JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
NEC NETWORKS & SYSTEM INTEGRATION CORPORATION
NEC MAGNUS COMMUNICATIONS, LTD.
|Title:||POWER SUPPLY SYSTEM|
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.