Wind turbine with vertical rotor - has spaced blade sets with orientation-adjustable outer blade and inner blade of adjustable radial length

摘要

The turbine rotor (4) rotating about a vertical axis has outer rotor blades (3) each associated with an inner rotor blade (1), both sets of blades (1,3) having a constant cross-section parallel to the vertical axis. The radial extent of each inner blade (1) can be varied over part of the distance between the rotor axis and each outer blade (3). Pref. each inner rotor blade (1) is formed by an adjustable radial vane (1') and a wind reception surface (5) which extends between the vane (1') and the rotor axis and which can be rolled in about the axis. The rotor (4) is pref. height adjustable relative to a support mast (13) its height increased with decreasing wind strength. The turbine (4) can be adjusted to precisely match the wind velocity.