| 摘要 |
A vertical axis wind turbine comprises a stator 1 having a circular array of stator blades 4 angularly arranged to cause wind flow to incident on the blades of a rotor, the rotor (fig.4; 11) also having a circular array of impeller rotor blades 14 to receive the air stream from the stator and drive the rotor around, the stator blades are angled to obviate the air flow from impinging on the back faces of the rotor blades and brake them. The rotor blades may be planar or have concave front faces with convex back faces of a greater curvature, the face of the blades may also be inclined. The stator aerofoils may overlap circumferentially and both the stator and rotor blades may be of equal height and mounted on respective rings 3 which may be mounted on magnetic bearings or halbach arrays 27. The rotor may have an open central region to form an exiting vortex. |
