Rotor of an electrical machine
AssigneeBBC Brown, Boveri & Company, Limited
InventorsReinhard Joho, Herbert Pohl
Life of this patent
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Abstract
A rotor of a turbine generator, wherein the field and amortisseur windings are held in place by means of axially and tangentially secured rings shrunk on the rotor body without the use of otherwise customary slot wedges. The rings are shrunk on the rotor body without overlapping and at a distance from each other. In this way, the magnetically effective rotor cross-section is increased up to 30% without reducing the size of the air gap.
Claims12
A rotor of an electrical machine, especially a turbine generator, wherein at least one rotor winding is placed into grooves formed in a rotor body and secured against forces developing during operation by means of rings of nonmagnetic material, said rotor having pole zones, comprising:
- said rings being secured without overlapping and at a distance from each other on the rotor body with said rings axially and tangentially secured in the pole zones;
- said rings having nose-like diametrically opposite projections provided on an inner surface thereof in the pole zone area in at least one ring end zone;
- and
- said rotor having corresponding recesses open at least towards one groove in the pole zones whereby one or multi-part breach components slide into at least one of the grooves adjacent to the recesses.
Dependencies are inferred from the claim text.