Large diameter synchronous electric machine

Details Large diameter synchronous electric machine Large diameter synchronous electric machine

H - Electricity

02

K

310/84

H02K 1/22 (2006.01) H02K 1/30 (2006.01)

Patent

CA 1124299

ABSTRACT In a synchronous electric machine having a hollow rotor shaft, the dimensions for the seating surfaces of the shrink fit between the lamina- tion 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.

331501

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