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US 9,056,663 B2Granted
Variable speed drive for subsea installations, vessels, and/or vehicles
AssigneeSiemens Aktiengesellschaft
InventorOve Bø
Life of this patent
Estimating the term…
Abstract
A Variable Speed Drive (1) for subsea installations (20), subsea vessels or subsea vehicles, as well as to a corresponding subsea installation (20), subsea vessel or subsea vehicle, has an alternating current/alternating current converter (2) having a current-controlled capacitor-less direct current link (7).
Claims19
A subsea installation comprising:
- a Variable Speed Drive;
- an alternating current/alternating current converter;
- and
- a liquid-tight housing fully filled with an electrically isolating liquid, wherein the liquid structurally supports the housing on all sides against external subsea pressure when the housing is arranged underwater;
- control electronics for the converter located inside a gas-filled control electronics containment,
- wherein at least said converter and said gas-filled control electronics containment are arranged within the liquid-tight housing, with the converter arranged outside the control electronics containment, and
- wherein said gas-filled control electronics containment is internally pressurized to compensate for external pressure imparted on the containment by the electrically isolating liquid in the liquid-tight housing.
4 more elements
A subsea vessel comprising:
- a subsea installation;
- a Variable Speed Drive;
- an alternating current/alternating current converter;
- and
- a liquid-tight housing fully filled with an electrically isolating liquid, wherein the liquid structurally supports the housing on all sides against external subsea pressure when the housing is arranged underwater;
- control electronics for the converter located inside a gas-filled control electronic containment,
- wherein at least said converter and said gas-filled control electronics containment are arranged within the liquid-tight housing, with the converter arranged outside the control electronics containment, and
- wherein said gas-filled control electronics containment is internally pressurized to compensate for external pressure imparted on the containment by the electrically isolating liquid in the liquid-tight housing.
5 more elements
A subsea vehicle comprising:
- a subsea installation with a Variable Speed Drive comprising an alternating current/alternating current converter and control electronics for the converter located inside a gas-filled control electronic containment, wherein at least said converter and said gas-filled control electronics containment are arranged within a liquid-tight housing that is fully filled with an electrically isolating liquid that structurally supports the housing on all sides against external subsea pressure when the housing is arranged underwater, and wherein said gas-filled control electronics containment is internally pressurized to compensate for external pressure imparted on the containment by the electrically isolating liquid in the liquid-tight housing.
Dependencies are inferred from the claim text.