Non-metallic structural rotor enclosure
First Claim
1. An enclosure for a rotor in a generator including the rotor, rotor windings and a stator and without rotor wedges, rotor teeth and retaining rings, the enclosure comprising a non-metallic tube that is sized to entirely contain the rotor windings.
1 Assignment
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Accused Products
Abstract
A non-metallic structural enclosure for a generator rotor replaces conventional containment components including rotor wedges, rotor teeth and retaining rings. The enclosure includes a non-metallic tube formed of a plurality of spaced rings or of a continuous tube including ventilation holes or slots. The simplified rotor assembly serves to restrain the winding against centrifugal forces with a more highly optimized use of space and materials. The arrangement allows more space for copper and ventilation, thereby benefiting both efficiency and the performance of the machine. The use of individual rings has the additional benefit of providing restraint against centrifugal forces without reducing the effectiveness of cross slots in the rotor body from correcting peripheral dissymmetries in rotor stiffness. The rings also provide openings for ventilation without introducing stress concentrations in the enclosure.
29 Citations
15 Claims
- 1. An enclosure for a rotor in a generator including the rotor, rotor windings and a stator and without rotor wedges, rotor teeth and retaining rings, the enclosure comprising a non-metallic tube that is sized to entirely contain the rotor windings.
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10. A rotor in a generator comprising:
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a magnetic core having at least two poles;
a plurality of winding assemblies, one for each pole; and
an enclosure entirely housing and retaining the core and the winding assemblies without rotor wedges, rotor teeth and retaining rings, wherein the enclosure comprises a non-metallic tube. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification