Patent ID: 9647505
Date: 2017-05-09
CPC Classifications: H02K

Claim:
1. A rotating electrical machine comprising: a rotor; and a stator disposed around an outer circumference of the rotor, wherein the rotor includes: each winding conductor stacked in the plurality of stages has ventilation passages formed in two lines arranged in a width direction of the winding conductor, with a long side of each ventilation passage directed in a longitudinal direction of the winding conductor, the ventilation passages penetrating the winding conductor so as to allow cooling gas to flow from the sub slot toward the wedge, sets of the two lines of ventilation passages are formed in the same shape at a plurality of positions spaced from each other in the longitudinal direction of each winding conductor, the following expression is satisfied, where W1 is a width dimension of each ventilation passage in the longitudinal direction, and W2 is a width dimension from one end of each ventilation passage to one end of another ventilation passage adjacent thereto in the longitudinal direction of the winding conductor, and the following expression is satisfied, where W3 is a width dimension of each winding conductor and W4 is a width dimension of each single ventilation passage.