Wound-field rotating electrical machine

A wound-field rotating electrical machine, comprising:

• a stator;
• and
• a rotor rotatably disposed coaxially with the stator with a gap in a radial direction between the rotor and the stator,
• wherein
• the rotor includes:
• a rotor core including a plurality of tooth portions provided in a circumferential direction;
• a field winding wound on the plurality of tooth portions;
• and
• non-magnetic members extending in an axial direction, in a plurality of slots formed between the plurality of tooth portions,
• each of the non-magnetic members includes a cooling medium flow passage extending in the axial direction,
• the cooling medium flow passage has a first opening open in a direction intersecting the axial direction, in an axial range overlapping the rotor core as viewed in the radial direction,
• the cooling medium flow passage has an inclined portion or a step portion between a first position in the axial direction and a second position, in the axial direction, that is closer to a center, in the axial direction, of the rotor core than the first position, and
• the cooling medium flow passage has a radially outermost radial position that is located further toward a radially outer side, at the second position than at the first position, by the inclined portion or the step portion.