Operating an asynchronous machine includes: closed loop control of a first and a second three-phase winding by a first and a second closed loop control method, respectively. The second closed loop control method supplies a voltage vector to a second inverter device, and changes from the first closed loop control method to a first open loop control method. The first open loop control method includes supplying a first reference current vector to a first filter device, supplying a filtered first reference current vector to a calculation device for calculating an electrical angle, supplying the electrical angle to a first transformation device for transforming a first open loop control deviation vector, transforming a first open loop control deviation vector into a third voltage vector, and supplying the third voltage vector to the first inverter device for the operation of the first three-phase winding.