Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-03-29
2011-03-29
Hanh, Nguyen N (Department: 2834)
Metal working
Method of mechanical manufacture
Electrical device making
Reexamination Certificate
active
07913375
ABSTRACT:
This invention presents a novel method for designing and manufacturing electrical windings for electrical machines. The presented manufacturing technique gives possibilities for an increased filling factor compared to conventional technique and improved heat transfer through application of thermally conductive compounds. The ready winding represents a solid body and has the strictly determined geometrical form. The slot part of the ready winding represents rods. These rods are the composite material consisting of coils of the insulated copper wire and any compound. The cross section of these rods precisely coincides with the cross section of slots of stator and differs only on the value of the tolerance necessary for assembling. End parts of the ready winding represent rings from a composite material. Visual appearance of a winding reminds the squirrel cage of a rotor of the asynchronous motor. The specified technology provides high precision of manufacturing of a winding. The winding represents a separate detail and ready assembly unit of the electrical machines, which easy insert into stator. Ptroposed windings are interchangeable. The specified property of the proposed winding structure facilitates maintenance and repair. The specified property of the proposed winding structure facilitates maintenance and repair.
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Hanh Nguyen N
Pulnikov Sergey
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