Wind energy harvester

A wind energy harvester comprising:

• a turntable platform positionable on a surface and comprising a generator;
• at least one elongate support boom pivotably arranged at one proximal end thereof on said turntable platform such that the support boom is oscillatable, and configured such that oscillations thereof actuates said generator;
• an aerofoil swivelably arranged at a distal end of said support boom to stand proud of the turntable platform and surface;
• an orientation arrangement configured to invert the aerofoil between oscillations to maintain a desired angle of attack of said aerofoil relative to wind passing over the surface during such oscillation;
• and
• a wind vane arrangement arranged between the proximal and distal ends of the support boom and configured to correct the angle of attack of said aerofoil according to a relative wind direction incident on a leading edge thereof;
• wherein the orientation arrangement further comprises a changeover mechanism which comprises a stroke changer arm linked to the aerofoil and arranged in contact with a roller operatively propelling a cam link rod and attached cam rotatably fast with the turntable platform, the changeover mechanism configured such that when the support boom reaches an apex or nadir of oscillation, the stroke changer arm inverts the aerofoil via a parallelogram linkage, so that oscillation of the support boom enables wind energy harvesting via the generator.

A wind energy harvester comprising:

• a turntable platform positionable on a surface and comprising a generator;
• at least one elongate support boom pivotably arranged at one proximal end thereof on said turntable platform such that the support boom is oscillatable, and configured such that oscillations thereof actuates said generator;
• an aerofoil swivelably arranged at a distal end of said support boom to stand proud of the turntable platform and surface;
• an orientation arrangement configured to invert the aerofoil between oscillations to maintain a desired angle of attack of said aerofoil relative to wind passing over the surface during such oscillation, said orientation arrangement comprising a changeover mechanism configured such that when the support boom reaches an apex or nadir of oscillation, the changeover mechanism inverts the aerofoil via a mechanical linkage;
• and
• a wind vane arrangement arranged between the proximal and distal ends of the support boom and configured to correct the angle of attack of said aerofoil according to a relative wind direction incident on a leading edge thereof;
• wherein oscillation of the support boom enables wind energy harvesting via the generator.

A wind energy harvester comprising:

• a turntable platform positionable on a surface and comprising a generator;
• at least one elongate support boom pivotably arranged at one proximal end thereof on said turntable platform such that the support boom is oscillatable, and configured such that oscillations thereof actuates said generator;
• an aerofoil swivelably arranged at a distal end of said support boom to stand proud of the turntable platform and surface, said aerofoil comprising a high-lift aerofoil having a high-camber chord configuration, with strengthening webs arranged between a leading and trailing edge thereof for swivelable mounting to the distal end of the at least one support boom;
• an orientation arrangement configured to invert the aerofoil between oscillations to maintain a desired angle of attack of said aerofoil relative to wind passing over the surface during such oscillation;
• and
• a wind vane arrangement arranged between the proximal and distal ends of the support boom and configured to correct the angle of attack of said aerofoil according to a relative wind direction incident on a leading edge thereof;
• wherein oscillation of the support boom enables wind energy harvesting via the generator.