Wind mitigation and wind power device

A system for mitigating damage to the roof of a building from lifting forces generated by high winds, said system comprising:

• an elongate cylinder configured for rotation about and axel;
• said cylinder mounted to the building roof by a support structure supporting said axel;
• means for causing axial rotation of said cylinder;
• said axial rotation of said cylinder generating a downward force in accordance with the Magnus effect as wind passes around the cylinder in a direction generally perpendicular to said axis;
• said support structure including an upper portion and a lower portion, said upper and lower portions movable relative to one another to allow said cylinder to vertically oscillate;
• and
• an electrical generator configured to generate electrical power from the oscillation of said cylinder in response to variation in wind speed.

A system for generating electricity from wind power and for mitigating damage to the roof of a building from lifting forces generated by high winds, said system comprising:

• a generally cylindrical, horizontally disposed wind turbine adapted for rotation about an axis;
• said wind turbine mounted to the building roof by a support structure;
• whereby said wind turbine generates electricity from wind power in a first mode of operation;
• means responsive to high winds for converting said wind turbine to a Magnus rotor by deployment of sheet-like material onto said wind turbine thereby forming a cylinder capable of harnessing the Magnus effect in a second mode of operation;
• whereby axial rotation of said cylinder generates a downward force in accordance with the Magnus effect as winds pass around said cylinder generally perpendicular relative to said axis.