After six years of working on the Irish Arklow offshore wind farm, General Electric felt it had gathered enough experience to develop a new model. The company’s 4-MW offshore wind turbine is built around a permanent magnet generator, delivering high efficiency at low wind speed. Two main bearings transfer axial and bending loads from the rotor to the bedplate, increasing reliability. Built around direct-drive technology, the 4-MW turbine removes one of the most costly failures in offshore turbines, gearboxes, and replaces it with slow speed components designed for the offshore environment.
The turbine has a full power converter, as well as continuous close wind tracking, no yaw breaks, and no hydraulics. The rotor has a 110-m dia., and with a spacious nacelle and internal hub access, the turbine offers safety and maintenance advantages.
Filed Under: Offshore wind, Turbines