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).

Abstract: A capacitor (1) for application in high pressure environments has at least two electrodes (2.1, 2.2) and at least one electrically insulating film (5) forming a dielectric between the electrodes (2.1, 2.2), each electrode (2.1, 2.2) having at least one metallic foil (3.1, 3.2) or at least one metallic layer on the electrically insulating film (5), wherein the capacitor (1) is unencapsulated and designed to allow a surrounding liquid to fill cavities of the capacitor (1). Furthermore, an electric device has at least one such capacitor (1) in a device housing, whereby the device housing is filled with an electrically insulating liquid.

Abstract: An electronic component (2) for application in high pressure environments has a casing (4) entirely filled with an electrically insulating first fluid (F1), whereby the casing (4) exhibits or connects to a volume compensation unit for compensating a volume change of the first fluid (F1). An electric device (1) has at least one such electronic component (2) in a device housing (10), whereby the device housing (10) is filled with a second fluid (F2).

Abstract: A capacitor (1) for application in high pressure environments has at least two electrodes (2.1, 2.2) and at least one electrically insulating film (5) forming a dielectric between the electrodes (2.1, 2.2), each electrode (2.1, 2.2) having at least one metallic foil (3.1, 3.2) or at least one metallic layer on the electrically insulating film (5), wherein the capacitor (1) is unencapsulated and designed to allow a surrounding liquid to fill cavities of the capacitor (1). Furthermore, an electric device has at least one such capacitor (1) in a device housing, whereby the device housing is filled with an electrically insulating liquid.

Abstract: In an energy generating system for generating electrical energy at a seabed, the energy generating system has a canister arranged at the seabed, whereby in the canister at least one electrothermal converter is in contact with a cooling surface and a heating surface, whereby the cooling surface is cooled by the circumjacent seawater, a pipeline with a pump for feeding a hot medium out of a drilling well in the seabed to heat up the heating surface, and a power output in the canister for the electrical energy generated by the at least one electrothermal converter. Furthermore, a method for generating electrical energy at a seabed provides underwater installations with electrical energy, where such an energy generating system is used.

Abstract: 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).