Abstract: A wave energy converter includes a buoyant body and an acceleration tube with a working cylinder and working piston movable therein, a mooring system, and at least one energy collecting device including a differential cylinder having an internal pump piston connected to the working piston via a piston rod. The differential cylinder includes a pumping chamber and an annular pumping chamber. When decreasing volume of the annular gap-shaped pumping chamber, the pump piston expels hydraulic fluid from the pumping chamber toward the pressure accumulator and draws hydraulic fluid from the fluid tank into the substantially cylindrical pumping chamber. During a working stroke causing a decrease in volume of the substantially cylindrical pumping chamber, the pump piston causes hydraulic fluid to bypass the pump piston through a fluid connection from the substantially cylindrical pumping chamber into the annular gap-shaped pumping chamber and further in a direction toward the pressure accumulator.

Abstract: A wave energy converter includes a buoyant body and an acceleration tube attached thereto forming a working cylinder. Upper and lower openings in the acceleration tube allow water flow between the working cylinder and the water in which the acceleration tube is at least partially submerged. A working piston is reciprocable in the working cylinder and an energy converting device collects energy from the movements of the working piston relative to the buoyant body. A mooring system maintains the wave energy converter within a desired anchoring area and includes at least a first fastening device mounted on the buoyant body for attachment of a first mooring line to the buoyant body and a second fastening device mounted on the buoyant body for attachment of a second mooring line to the buoyant body. The mooring lines include first and second line sections, respectively, and at least one buoyant element attached therebetween.

Abstract: A bend limiting device for a cable includes at least one elongated sleeve member with an entrance end exhibiting an entrance opening and an opposite exit end exhibiting an exit opening for the cable, an outer abutment surface between the entrance and exit ends secures against a rigid surface of a floating marine installation or vessel, an axially through-going hole between the entrance opening and the exit opening accommodates a portion of the cable, and at least one clamping device secures the sleeve member in a fixed position around the cable portion. The outer abutment surface of the sleeve member allows it to be secured against the rigid surface by applying a pulling force on the cable in a direction from the abutment surface to the rigid surface, as well as to be detached from the rigid surface when the application of pulling force on the cable ceases.

Abstract: A connection substation for a plurality of wave energy converters being part of a wave power station includes a transformer and a connecting device for electrically connecting input power cables to a common output cable. The connection substation has a buoyant body portion providing a buoyancy force and a fastening device for securing at least one mooring line connected to an anchor, wherein the at least one fastening device is disposed in the vicinity of the bottom end of the connection substation at a distance from an upper end of the buoyant body portion, wherein the at least one connecting device is disposed in a waterproof compartment in the connection substation, and wherein each of the plurality of input power cables are run so that at least a portion of the cable extends up to a level at least 2 meters above the design waterline of the connection substation.