Abstract: The invention relates to a method of operating an electromechanical converter, in particular an electric variable transmission, provided with a primary shaft having a rotor mounted thereon, a secondary shaft having an interrotor mounted thereon, and a stator, fixedly mounted to the housing of the electromechanical converter, wherein, viewed from the primary shaft in radial direction, the rotor, the interrotor and the stator are arranged concentrically relative to each other. The rotor and the stator are designed with one or more windings. Further, the interrotor forms one whole both mechanically and electromagnetically, and is arranged as a conductor for magnetic flux in an at least tangential direction. The method comprises the step of variably controlling a magnetic rotor flux.