Abstract: The invention relates to a converter system (1, 1?, 1?) for an electric vehicle and in particular a lightweight electric vehicle. The converter system (1, 1?, 1?) has a supporting housing (10, 10?, 10?) for connecting to the vehicle, has an electromechanical energy converter arranged at least partially in the supporting housing (10, 10?, 10?), said electromechanical energy converter having at least one stator (21, 21?) and a rotor (22, 22?) which is rotatable relative to the stator (21, 21?) about a drive axis (7, 40), and has a power transmitting device which connects the rotor (22, 22?) to a connection element.