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US 4,289,970 AGranted
Wind powered electrical generator
OwnerDavid D. Deibertinventor
Life of this patent
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OwnerDavid D. Deibertinventor
Estimating the term…
A wind powered electrical generator having a rotatable wind wheel (21) carrying one of the armature (42) or field structures and a plurality of windvanes (45) connecting the rim to a central shaft (28), a stator (39) carrying the other of the armature or field structures, and a supporting structure (22) for the windwheel rotor shaft and the stator. The armature winding is carried by the windwheel at its perimeter, and the field structure is a ring structure which lies just radially outward of the armature winding and is carried by the fixed housing structure which perimetrally surrounds the windwheel. Bearing support (48) provided at the perimeter of the windwheel by low friction bearings carried by the fixed housing structure minimizes bearing stresses developed at the supporting shaft under wind loading conditions. The electical output of the generator is compared against a reference standard to generate corrective error signals when the phase of the generated electrical signal differs from that of the reference standard. Corrective mechanisms utilized are means for changing the angle presented by the windwheel blades to the wind; a braking structure; and a feedback field winding.
A wind powered alternating current electrical generator of the type having a rotatable wind wheel generator rotor consisting of a circular rim carrying one of the armature or field structures and a plurality of angularly spaced radially extending windvanes connecting the rim to a rotatable central shaft, a stator carrying the other of the armature or field structures and past which the windwheel rotor rim rotates, and a supporting structure for the windwheel rotor and the stator, characterized in that the stator extends concentrically closely peripherally completely around the rotor substantially co-planar therewith and radially outward therefrom.
A wind powered alternating current electrical generator of the type having a rotatable wind wheel generator rotor consisting of a circular rim carrying one of the armature or field structures and a plurality of angularly spaced radially extending windvanes connecting the rim to a rotatable central shaft, a stator carrying the other of the armature or field structures and past which the windwheel rotor rim rotates, and a supporting structure for the windwheel rotor and the stator, characterized in that at least one of said supporting structure and stator carries low friction bearing means engageable with said rotor proximate to the outer perimeter thereof and effective under wind loading conditions to minimize lateral thrust and torsional stresses on the bearings supporting the rotatable central shaft.
Dependencies are inferred from the claim text.