Shaft embedded brush power transfer for separately excited machine power

A brush transfer system for a separately excited machine, comprising:

• a positive brush;
• a negative brush;
• one or more positive brushes operatively in contact with the positive slipring;
• one or more negative brushes operatively in contact with the positive slipring;
• a rotor winding attached to one or more rotor laminations and exterior to the positive slipring;
• a stator winding attached to one or more stator laminations, wherein the stator winding is outside of the rotor winding;
• a hollow shaft, wherein the rotor laminations are pressed onto the hollow shaft;
• and
• a shaft ingress separator within the hollow shaft, wherein the shaft ingress separator is a barrier between wet areas and dry areas.

A vehicle having a brush transfer system for a separately excited machine, comprising:

• a positive brush;
• a negative brush;
• one or more positive brushes operatively in contact with the positive slipring;
• one or more negative brushes operatively in contact with the positive slipring;
• a rotor winding attached to one or more rotor laminations exterior to the positive slipring;
• a stator winding attached to one or more stator laminations, wherein the stator winding is outside of the rotor winding;
• a hollow shaft, wherein the rotor laminations are pressed onto the hollow shaft;
• a shaft ingress separator within the hollow shaft, wherein the shaft ingress separator is a barrier between wet areas and dry areas;
• a brush carrier within the hollow shaft;
• and
• at least one set of bearings.