Method for actuating a frequency converter , wherein the method has the following steps: - measuring phase currents flowing in phase conductors of a three-phase system ; - generating a first modulation space vector that is in phase with the phase current and hence has an angle in sync with a system voltage of the three-phase system , and that has a stipulated modulation index as amplitude; - performing a Clarke transformation in order to transform the measured phase currents into a second current space vector ; - multiplying the second current space vector by a stipulated virtual resistance in order to obtain a second modulation space vector ; - subtracting the second modulation space vector from the first modulation space vector in order to obtain a third modulation space vector ; - modulating the frequency converter in accordance with the third modulation space vector , wherein the generating of the first modulation space vector comprises the following steps: - performing a Park transformation to use the angle in order to transform the measured phase current into a first current space vector ; - adjusting the angle such that a reactive current component of the first current space vector disappears, wherein the reactive current component of the first current space vector is multiplied by a quotient of the stipulated virtual resistance and the stipulated modulation index in order to obtain an angle difference , and the angle difference is supplied to a phase locked loop in order to adjust the angle ; - generating the first modulation space vector , which has the angle and the stipulated modulation index as amplitude, by means of an inverse Park transformation . - measuring phase currents flowing in phase conductors of a three-phase system ; - generating a first modulation space vector that is in phase with the phase current and hence has an angle in sync with a system voltage of the three-phase system , and that has a stipulated modulation index as amplitude; - performing a Clarke transformation in order to transform the measured phase currents into a second current space vector ; - multiplying the second current space vector by a stipulated virtual resistance in order to obtain a second modulation space vector ; - subtracting the second modulation space vector from the first modulation space vector in order to obtain a third modulation space vector ; - modulating the frequency converter in accordance with the third modulation space vector , - performing a Park transformation to use the angle in order to transform the measured phase current into a first current space vector ; - adjusting the angle such that a reactive current component of the first current space vector disappears, wherein the reactive current component of the first current space vector is multiplied by a quotient of the stipulated virtual resistance and the stipulated modulation index in order to obtain an angle difference , and the angle difference is supplied to a phase locked loop in order to adjust the angle ; - generating the first modulation space vector , which has the angle and the stipulated modulation index as amplitude, by means of an inverse Park transformation . <EOS>