Abb Schweiz Ag

Harald Fretheim

Stian Ingebrigtsen

Oistein Martinsen

Jan Wiik

Tor-Eivind Moen

Vitor Moritsugu

Trond Haugen

Edgar Jellum

Vitor Hugo Eiti Moritsugu

A subsea substation system including: an oil-filled water impermeable enclosure; an AC-transformer, and at least one overcurrent device electrically connected to the AC-transformer, the at least one overcurrent device, the AC-transformer, and the electrical connections between them are accommodated in the oil-filled water impermeable enclosure, wherein the enclosure includes thermal zones within the enclosure, wherein the AC-transformer is arranged in a first thermal zone and the overcurrent devices are arranged in a second thermal zone of the enclosure, a thermal layer separate the first thermal zone and the second thermal zone, the at least one thermal layer is configured to allow oil flow between the thermal zones while reducing heat flow between the zones.

Subsea substation system with one enclosure having separate thermal zones

The present invention relates to a power collection system for subsea collection of power from offshore power generation units, the system including: a set of power extender modules being independently arrangeable subsea in a local grid and each being connectable with a respective one of a set of offshore power generation units to collect electrical power from the respective offshore power generation units, the set of power extender modules being configured to be electrically series connected in the local grid being connectable with a power consumer.

Power collection system for subsea transfer of power from offshore power generation units

A method for estimating a motor parameter in a load commutated inverter arrangement, including the steps of: measuring a motor side ac-voltage; detecting commutation interval information of the measured motor side ac-voltage; estimating a motor parameter based on the detected commutation interval information; and indicating when the estimated motor parameter deviates from a monitoring parameter thereof.

Method for estimating motor parameter in a load commutated inverter arrangement, and a load commutated inverter arrangement therefor

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Aurskog, Norway

Harald Fretheim