Vertical axis wind turbine and method for operating such a turbine
AssigneeAgile Wind Power AG
InventorsKarl Bahnmüller, Hans Thomas Hug
Life of this patent
Estimating the term…
Abstract
A vertical axis wind turbine includes two or more cells arranged one above the other along a vertical machine axis, wherein each of the cells includes a plurality of vertical blades which are arranged within the cell distributed on a concentric circle about the machine axis and which are connected so as to be able to move together on this circle and which are rotationally fixed with a main shaft, and wherein the blades in the cell are each individually mounted so as to be able to rotate about a vertical axis of rotation which in particular runs internally through them.
Claims28
A vertical wind turbine, comprising a plurality of vertical blades and a plurality of radial arms, with each blade of the plurality of blades supported at a distal end of at least one radial arm of the plurality of radial arms, so that the blades are rotationally fixed with a main shaft of the wind turbine, wherein the blades are each individually mounted at said end of the respective at least one radial arm so as to be able to rotate about a vertical axis of rotation running internally through each of the blades, wherein to each of the blades means are associated, so that the blade is made to adopt, during the circulation about the machine axis and independently of the other blades, an angular position about the respective axis of rotation of the blade, wherein on said end of the respective at least one radial arm, a wind measurement device is fixed, and wherein the wind turbine is configured to actively control said angular position according to measured values of a relative wind speed, a relative wind flow direction, a rotational speed of the wind turbine, and a position of the individual blade along the circulation of the individual blade around a machine axis of the wind turbine.
A method for operating a vertical wind turbine, wherein an angular position of an individual blade of a plurality of blades of the wind turbine around a respective axis of rotation of the individual blade is actively controlled, independently from the other blades of the plurality of blades, according to measured values of a relative wind speed, a relative wind flow direction, a rotational speed of the wind turbine, and a position of the individual blade along the circulation of the individual blade around a machine axis of the wind turbine, wherein each blade of the plurality of blades is supported at a distal end of at least one radial arm of a plurality of radial arms, and wherein on said end of the respective at least one radial arm, a respective wind measurement device is fixed for determining the relative wind flow direction and the relative wind speed with respect to the respective blade.
Dependencies are inferred from the claim text.