A rotating machine experiences various losses, such as copper loss, iron loss, and mechanical loss, while operating in various modes and these losses raise the temperatures of its components. A rotating machine must also be designed so that the temperatures of its conductors remain below the temperature tolerance limit of their insulation. The necessary cooling design is one of the critical design factors that determines the dimensions and efficiency of the machine. The aim of this study was to apply quality engiheering to air-cooling parameter design for the rotor of a rotating machine. This was done in two steps: in the first step, the main factors affecting the air cooling of the rotor were extracted using network analysis; in the second step, the effects of the main factors were evaluated quantitatively by model test analysis. As a result of this study, a 28% increase in complete flow around the rotor was confirmed and the flow was distributed more uniformly.
