Wind turbine and wind power plant

Abstract

A contra-rotating wind turbine (10) is disclosed comprising a first turbine rotor (36) mounted on a first turbine shaft (37) and a second turbine rotor (47) mounted on a second turbine shaft (48) where the first turbine shaft (37) is rotatable about a rotational axis (A) and the second turbine shaft (48) is rotatable in the opposite direction about the same rotational axis (A). The first turbine rotor (36) comprises at least one first turbine blade (38) extending in an outwards direction from the first turbine shaft (37) and the second turbine rotor (47) comprises at least one second turbine blade (49) extending in an outwards direction from the second turbine shaft (48). The at least one first turbine blade (38) further forms a first blade angle (40) relative to the first turbine shaft (37) and the at least one second turbine blade (49) forms a second blade angle (51) relative to the second turbine shaft (48) where the first blade angle (40) and the second blade angle (51) are both acute when the wind turbine (10) is operating.

Dependencies are inferred from the claim text.