Generator with high-pressure air cooling

A generator rotor including a rotor shaft having a rotor slot, the rotor comprising:

• a rotor winding at least partially disposed within the rotor slot;
• a wedge coupled to the rotor shaft and positioned to inhibit radial movement of the rotor winding from the rotor slot;
• a seal member coupled to the wedge, the seal member cooperating with the wedge and the rotor shaft to define a first space;
• a first retaining ring coupled to the rotor shaft to define a second space between the first retaining ring and the rotor shaft;
• a second retaining ring coupled to the rotor shaft to define a third space between the second retaining ring and the rotor shaft, the second space configured to receive a high-pressure coolant and direct the high-pressure coolant to the first space and the third space;
• and
• a ring seal extending circumferentially around the rotor shaft and positioned to contact the first retaining ring and the seal member.

A generator rotor including a rotor shaft having a rotor slot, the rotor comprising:

• a rotor winding at least partially disposed within the rotor slot;
• a wedge coupled to the rotor shaft and extending in an axial direction, the wedge positioned to inhibit radial movement of the rotor winding from the rotor slot;
• a wedge insert positioned adjacent the wedge;
• a wedge cap positioned adjacent the wedge insert to sandwich the wedge insert between the wedge cap and the wedge;
• a wedge bolt threadably engaged with the wedge and operable to compress the wedge insert in the axial direction and to expand the wedge insert in the radial and circumferential directions;
• a ring seal extending around a circumference of the rotor and positioned axially outboard of the wedge insert;
• and
• a retaining ring coupled to the wedge such that each of the ring seal and the wedge insert cooperate with the retaining ring and the wedge to form a seal therebetween.