Long-range underwater power supply system

The long-distance underwater power supply system addresses stability and reliability issues by converting constant current to constant voltage and grounding for recirculation, enhancing reliability and reducing cable entanglement and cost.

JP2026062427AActive Publication Date: 2026-04-09エイチエムエヌテクノロジーズカンパニーリミテッド
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Current power supply methods for long-distance multi-node underwater observation networks face issues of low stability and reliability due to complex high-voltage designs, noise interference, and limitations in voltage and current transmission, making them unsuitable for powering diverse and distributed underwater equipment.

Method used

A long-distance underwater power supply system utilizing a terminal power supply that outputs constant current, with branch nodes converting this current to constant voltage and grounding for recirculation, reducing cable installation and enhancing stability through fault isolation and redundancy.

Benefits of technology

The system improves power supply reliability and stability by converting constant current to constant voltage, reducing cable usage, and isolating faults, thus supporting diverse underwater equipment with reduced cable entanglement and cost.

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Abstract

This application relates to the technical field of underwater power supply and provides a long-distance underwater power supply system applicable to a seabed observation system including multiple load nodes. [Solution] The power supply system includes at least one terminal power supply and a plurality of branch nodes, the terminal power supply being electrically connected sequentially to the plurality of branch nodes via a trunk cable, the terminal power supply being able to output a constant current to the trunk cable, the plurality of branch nodes being connected to at least one corresponding load node, each branch node and its corresponding load node being connected to an underwater ground, the branch nodes being able to convert the constant current transmitted through the trunk cable into a constant voltage current and output the constant voltage current to the load node.
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Citation Information

Patent Citations

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