Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1985-12-12
1987-02-17
Salce, Patrick R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310256, 310 54, H02K 1716
Patent
active
046442103
ABSTRACT:
A high speed induction motor comprising a stator and a rotor coaxially positioned within the stator, and mounted in a suitable frame having a water cooled jacket. The stator includes a multiphase winding 16 on a laminated core 18, and having stainless steel end plates 24. Cooling coils 30 are around the end turn portions of the windings, and layers of insulation 28 are between the windings and the cooling coils. The rotor 12 has a core section 37 and an integral shaft 38. A plurality of elongated conductor bars 40 fit tightly into semiclosed elongated slots 42 in the rotor core 37, the slots and bars preferably having a wedge shaped cross section, and having a narrow neck portion adjacent the outer periphery of the rotor core, forming rotor teeth 54 between adjacent conductor bars. Copper end rings 68 are provided at opposite ends of the rotor core, with reduced opposite end portions 76 of the conductor bars received and brazed within spaced slots 70 around the periphery of the end rings. The copper end rings are spaced from the ends of the rotor core by non-magnetic spacers 78 and retained by titanium end caps.
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Donelan Lynn E.
Meisner John W.
Field Harry B.
Ginsberg Lawrence N.
Hamann H. Fredrick
Rebsch D. L.
Rockwell International Corporation
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