| 摘要 |
A rotor assembly including a rotor body and a stator, the rotor body having field coils seated within radial slots formed in the rotor body with end turns of the coils extending beyond opposite ends of the rotor body, and annular retaining rings fixed to the opposite ends of the rotor body and adapted to constrain the end turns against centrifugal forces, and wherein the stator includes a core with stator bars secured therein, the core having core-end tapers at opposite ends thereof that define, in combination with the retaining rings, annular ventilation air exit gaps; each the retaining ring comprising axially inboard and outboard ends, and wherein a radially outer surface at the axially inboard end has an aerodynamically smooth spline shape defined by compound radii that merges into a rounded nose portion, the core-end tapers of the stator core tapering in an axial and radially outward direction in a manner approximating a smooth curve.
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