Hybrid Vertical Axis Wind Turbine

摘要

A hybrid vertical axis wind turbine using a highly aerodynamic blade-profile is disclosed. The blade-profile is simple, asymmetrical with unequal upper and lower surfaces cambers and is capable of generating high starting torque even at low wind. Wind tunnel tests demonstrated that this aerodynamic profile would generate high torque of similar magnitude when wind comes from leading or trailing edge. Other characteristics of this profile are that it is compact, lightweight, durable and economical. The target users for this patent will be 44% of the world population that live in rural areas where roof-top wind turbine will be cost effective to provide enough household required electric power. This compact turbine can also use batteries to store energy, thereby reducing and possibly eliminating the need for grid power.

主权项

1. A hybrid vertical axis wind turbine structure comprising: a vertical rotating shaft at the center of the system; upper and lower hubs to accept upper and lower rows of horizontal beams; multiple blades each connected to a set of upper and lower horizontal beams; an upper outer shaft to protect the vertical rotating shaft that is placed between the hubs; an upper thrust bearing supported on an upper base-plate placed below the lower hub; a lower outer shaft to protect the rotating shaft placed below the lower hub; a plurality of magnets that are fixed on the outer surface of the vertical rotating shaft between the upper and lower base-plates; coils of copper wire wound helically on an insulated cylinder and connected to a power storage device at the bottom; a lower outer shaft to protect the vertical rotating shaft placed between upper base-plate and lower base-plate; a power storage means which is connected to the copper coil; and a lower thrust bearing supported on the lower base-plate, which is supported directly and indirectly on foundation.