Patent ID: 9467069
Filing Date: 2016-10-11
CPC Classification: H02M

Claim Text:
1. A method for controlling a frequency converter, wherein the method comprises the following steps: measuring phase currents flowing in phase conductors of a three-phase supply network; generating a first modulation space vector that is in phase with the phase currents and that comprises an angle that is synchronous to a supply voltage of the three-Phase supply network and that comprises a determined modulation index as an amplitude; conducting a Clarke transformation to transform the measured phase currents into a second current space vector; multiplying the second current space vector by a determined virtual resistance to obtain a second modulation space vector; subtracting the second modulation space vector from the first modulation space vector to obtain a third modulation space vector; and modulating the frequency converter according to the third modulation space vector; wherein generating the first modulation space vector comprises the following steps: