Abb Schweiz Ag

Helge Kolstad

Silvio Colombi

John Pretlove

Nicola Notari

Mats Hyttinen

Wojciech Piasecki

Markku Launonen

Jan Wiik

Arne Trandal

Paul Midtun

Tor-Eivind Moen

Marcin Szewczyk

Paolo Catapane

Christian Spindler

An uninterruptible power supply, UPS, arrangement for subsea applications, including a container arranged and configured for subsea operation, and the following main modules arranged inside the container: at least one battery module of a predetermined battery capacity; at least one UPS module governing the battery module, the UPS module having a predetermined UPS capacity; at least one control module configured for interfacing and managing the battery module and the UPS module. The UPS arrangement is arranged and configured to vary its overall capacity based on at least the number of battery and UPS modules, wherein the at least one battery module and the at least one UPS module are internally arranged such that the heat losses from the UPS module are used to heat the battery module.

Uninterruptible power supply arrangement for subsea applications

A method for estimating the remaining useful life of a pressure compensator of a subsea arrangement, the method including determining displacement data related to displacements of the pressure compensator during a time period; and estimating the remaining useful life of the pressure compensator in relation to a failure mode of the pressure compensator based on the determined displacement data of the pressure compensator. A system including a subsea arrangement and a control system, a computer program product, and a computer program, are also provided.

System and method for estimating remaining useful life of pressure compensator

A subsea unit includes a housing containing a dielectric liquid, a first heat generating component and a second heat generating component. The first heat generating component is arranged in thermal connection with the housing and the second heat generating component is arranged at a distance from the housing. A method of cooling heat generating components contained in a housing of a subsea unit is also presented.

Subsea unit with conduction and convection cooling

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Norge, Norway

Helge Kolstad