Single piece electric assembly for connecting an off-shore wind turbine with an electric subsea cable and mounting method therefor

• Main Authors: MOELLER, JESPER, THISTED, JAN, STIESDAL, HENRIK
• Format: Patent
• Language: English; French; German
• Published: 22.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRICITY; HEATING; INDUCTANCES; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MAGNETS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

It is described an electric assembly (100, 400) for electrically connecting at least one wind turbine (450a, 450b) being located off-shore with an electric subsea cable (490) being connected to an on-shore power grid (494). The electric assembly (100, 400) comprises (a) a transformer (110, 410) for transforming a first voltage level being provided by the at least one wind turbine (450a, 450b) to a second voltage level of the subsea cable (490), and (b) an external equipment (120) being electrically and mechanically connected to the transformer (110) for controlling an operation of at least the transformer (110). The transformer (110) and the electric equipment (120) are formed by a preinstalled package, which can be mechanically handled as a single piece. Further, it is described a wind turbine (450a) comprising such an electric assembly (100, 400), a wind turbine cluster (480) comprising such a wind turbine (450a) and a method for mounting such an electric assembly (100, 400) to a tower (160, 460) of a wind turbine (450a).