Patent ID: 7893575

Claim:
A rotor of a rotary electric machine comprising: a rotor core, which has a magnetic pole, and rotor slots for inserting a winding formed in a part other than the magnetic pole part, wherein the depth from the open end of a rotor slot closest to the magnetic pole to a slot bottom is made less than the depth of slots at and after a second slot counted from the magnetic pole side in the direction of internal circumference, and when a shortest distance between the bottoms of the rotor slots opposed to each other through the magnetic pole is assumed to be a magnetic pole width of the slots, a magnetic pole width Wp 1 of a slot closest to the magnetic pole is set to 85% or more of a magnetic pole width Wp 2 of a second slot counted from the magnetic pole side in the direction of internal circumference; a field coil composed of field coil conductors inserted into the rotor slot; and a rotor wedge which is inserted into the opening of the rotor slot, and holds the field coil, wherein when a shortest distance between said adjacent rotor slots along a circumferential direction is assumed to be Wt 1 and Wt 2 sequentially from the magnetic pole Wt 1 ≦Wt 2 .