Vertical axis wind turbine with flat electric generator

F - Mech Eng,Light,Heat,Weapons – 03 – D

Patent

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Details

F03D 3/02 (2006.01) F03D 9/00 (2006.01) F03D 11/02 (2006.01) H02K 7/18 (2006.01)

Patent

CA 2721755

A wind turbine with an electric generator, having a vertical axis of rotation, the wind turbine having: a cantilevered spindle having an upper end and a lower base for securing to a support structure, the spindle having an electric generator stator disposed about the spindle in communication with electrical conductors; a rotor assembly comprising a sleeve and a rotor housing mounted coaxially around the spindle and the stator for rotation about the vertical axis, the rotor housing having a number of permanent magnets disposed about the stator mounted in the rotor housing, the rotor assembly including rotor bearings mounting the rotor housing to the spindle; and a number of blades mounted to the rotor housing, the electric generator optionally having: a stator having a first annular flux surface and a second annular flux surface transverse the axis of rotation and a plurality of armature sections disposed in a circumferential array wherein each armature section has metal wire coils in communication with electrical conductors, the stator being fixed to a spindle; a rotor assembly comprising a rotor housing enveloping the stator, the rotor assembly having a first annular permanent magnet array and a second annular permanent magnet array mounted in the rotor housing adjacent the first flux surface and the second flux surface respectively, the rotor housing connected to a sleeve mounted on the spindle for rotation about the axis; wherein each armature section comprises a bobbin segment about which at least one of the metal wire coils are wound, the bobbin segment including a mounting lug and fastener engageable with a matching contact pad in a stator hub.

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