Patent ID: 7893574
Filing Date: 2011-02-22
Classification: H02K

Abstract:
1. A rotor of a rotary-electric machine comprising: a rotor iron core extending in an axial direction and having a plurality of slots formed at predetermined intervals in a circumferential direction; a rotor winding constituted by laminating and storing a plurality of conductors in each slot of said rotor iron core; and a retaining ring which covers and holds an end portion of the rotor winding in the axial direction, and said rotor winding being provided with ventilation channels on the surfaces of the conductors along a longitudinal direction and through which cooling air flows, said ventilation channels being provided with air inlet holes which introduce said cooling air and exhaust holes which exhaust the cooling air, wherein said conductors are laminated to constitute said rotor winding, and said air inlet holes are provided on the bottom surfaces of the conductors.