Rotating electrical machine

摘要

A rotating electrical machine main body (40) includes a rotor (4) having a fan, a stator (1), and housings (2, 3). An inverter unit (30) includes a case (14) and a plurality of switching semiconductor devices (15). The rotating electrical machine main body (40) and the inverter unit (30) are coupled with each other when the case (14) is connected to the housing (3). A cooling air circulated by rotation of a fan (12a) cools the inverter unit (30) before flowing into the housing. Part of the case (4)is disposed between the rotating electrical machine main body (40) and the switching semiconductor devices (15), preventing thermal radiation radiated (or irradiated) from the rotating electrical machine main body (40) from reaching the switching semiconductor devices (15).