Driving/electric-power generating system for a vehicle

The present invention relates to an AC generator (100) comprising a rotor (4) and a stator (2) having a three-phase winding (3). A three-phase inverter (101) is connected to the three-phase winding (3). Here, the three-phase winding (3) comprises at least two independent three-phase windings (3a, 3b). Switching elements for respective phases of the three-phase inverter (101) are connected in parallel by the number of the independent three-phase windings (3a, 3b), and in-phase windings are individually connected to their parallel switching elements.