Large diameter synchronous electric machine

Details Large diameter synchronous electric machine Large diameter synchronous electric machine

1979-07-06

1981-07-07

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310218, H02K 122

Patent

active

042777097

ABSTRACT:
In a synchronous electric machine having a hollow rotor shaft, the dimensions for the seating surfaces of the shrink fit between the lamination ring and the hub are chosen so that lifting of the lamination ring at speeds above the nominal speed of rotation is limited to the portion of the axial length which is located on the side facing away from the turbine, while lifting below the nominal speed is provided in the region adjacent to the end face of the rotor on the turbine side. The rotor shaft is thus load-relieved, the lifting speed being determined so that the allowable material stress is not exceeded in that region.

REFERENCES:
patent: 1817054 (1931-08-01), Baudry
patent: 3112420 (1963-11-01), Meyer
patent: 3128403 (1964-04-01), Gynt
patent: 4110652 (1978-08-01), McGahern

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