Underwater energy storage proves feasible according to tests

Isbel Lázaro.

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Inspenet, September 15, 2023.

Underwater energy storage: New advances!

A four-month subsea energy assessment programme, which included the use of Mocean Energy’s Blue

According to Verlume, the partner that provided the Halo underwater battery pack, the trials demonstrated the reliability of an underwater energy storage system capable of constantly supplying energy to underwater equipment by recharging via a battery capture device. wave energy, thus eliminating the need to use an expensive umbilical cable for transmission.

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The objective of these tests was to confirm the feasibility of using renewable energy sources to supply energy to underwater equipment. This was achieved through the use of an intelligent underwater battery storage system, designed to manage natural fluctuations, thus ensuring its continuous output through the batteries.

Likewise, it was demonstrated that this system could provide power to underwater electronic modules supplied by Baker Hughes. These tests simulated the control and communications necessary for subsea well operations using a completely renewable source.

Additionally, these tests were carried out using an autonomous underwater vehicle (AUV) provided by Transmark Subsea. This was equipped with a docking station integrated into the Halo system, thus creating a charging point and a communication link with the surface through the Halo, which connected to the Blue X converter.

The AUV underwent a total of 50 charging cycles to demonstrate effectiveness in delivering power to underwater vehicles.

The testing program has since been expanded to include several systems that remain submerged and these tests will continue until spring 2024. During this period data related to the maintenance, survivability and reliability of the systems will be collected.

This forms part of Phase 3 of the Renewables for Subsea Power project. In Phase 2, key technologies underwent ground testing at Verlume’s Aberdeen facility.

Source: https://www.offshore-mag.com/subsea/article/14298408/verlume-updates-progress-on-subsea-power-trials-for-wave-energy-converter

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