Rotor end caps and a method of cooling a high speed generator

A multi-pole high speed generator, comprising:

• a shaft having an axial bore with at least one orifice extending radially from the bore at each of a first and second end thereof;
• a rotor mounted on the shaft, the rotor having a plurality of poles and at least one support wedge positioned between each of the poles, the at least one support wedge having at least one mid supply port end at least one outlet supply port open to at least one axial channel in the at least one support wedge;
• a first end cap disposed over a first axial end of the at least one support wedge and having radial fluid flow galleries extending from the at least one orifice at the second end of the shaft through which fluid exits the shaft to the at least one inlet supply port in each of the at least one support wedge hind a second cad cap disposed over a second axial cad of the at least one support wedge and having radial fluid flow galleries extending from the at least one outlet supply port in the at least one support wedge to the at least one orifice at the that end of the shaft through which fluid enters the shaft before exiting the rotor.

An end cap for a multi-pole high speed generator having a rotor assembly with a plurality of poles and support wedges therebetween, the end cap comprising:

• a central bore;
• a circular end wall circumferentially surrounded by an annular flange;
• and paired end cap openings in the end wall with each pair at 90° angles to one another, each of the paired end can openings includes a cooling medium feed port between the openings in each pair of paired end can openings.