Objective
The aim of the project is to demonstrate a wind turbine for series production, Nordic 1000; which is comparatively lighter, less complicated and more economical than today's wind turbines. One wind turbine will be built for demonstration.
Nordic 1000 is a two-bladed wind turbines that is characterised by a flexible, light-weight and uncomplicated design. the blades were deisgned especially for the project in co-operation between Nordic Windpower and LM Glasfiber A/S. The outer parts of the blades have got LM2 profiles in order to increase performance and aerodynamic stability.
The teetering movements of the hub are contracted by rubber bumpers that restrict the movements to a few degrees. this is enough to reduce loads to a level that makes the design as resistant to fatigue as to extreme loads. The hub is compact with comparatively low weight and a short over-hang. It is cast of nodular iron and designed for infinite life. The planetary gear-box also contains the main shaft bearings.The gear-box is specially designed for the project by Flender AG in Germany that also was a contractor in the Joule II project.
The machinery bed is welded from cylindrically shaped sections, which makes it compact and easy to manufacture The gear-box is flanged to the front end of the bed, the generator to the aft section and downwards the bed is connected to the yaw bearing. The electrical system consists of a two-speed induction machine directly coupled to the grid. In the prototype there was an AC/DC/AC system for variable speed.
The nacelle is made of glass-fibre reinforced polyester in a top and a bottom half, made from the same mould, which are bolted together.
The yaw drive consists of two geared electric motors that acts on the inner cogged ring of the yaw bearing. Hydrodynamic couplings provide damping of the rocking yaw moment during both yawing and non-yawing conditions. There is no yaw brake. The controller is based on standard type microprocessor control with computers in both the bottom of the tower and in the nacelle. data transfer is by means of a serial interface with an optical link. Access to the system can be provided through a modem and any PC.
Fields of science
Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
Sweden