Rotor of an electrical machine having an excitation current supp

Details Rotor of an electrical machine having an excitation current supp Rotor of an electrical machine having an excitation current supp

1992-12-09

1994-04-05

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 59, H02K 900

Patent

active

053008472

ABSTRACT:
In large electrical machines, the electrical connection between the excitation supply line (7, 8), which runs axially, centrally in the rotor, and the excitation winding conductors (4) in the winding overhang (3) of the rotor is highly stressed electrically and mechanically. It must therefore be forced-cooled. Effective cooling can be achieved if a portion of the cooling gas from the cold gas chambers is guided through special radial shaft holes (20) to the shaft axis and then radially outwards through or along the excitation supply line bolt (13) into the hot gas space (H) in the rotor winding overhang space.

REFERENCES:
patent: 4066921 (1978-01-01), Blank
patent: 4074155 (1978-02-01), Haditsch et al.

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