ACTIVE FILTRATION OF A THREE-PHASE CURRENT

摘要

The invention relates to a method for the active filtration of a three-phase current in an electric network, the current including a fundamental component at a selected frequency and at least one pollutant component at a frequency different from the selected frequency. The invention is characterised by the steps of: transmitting a measurement of the current flowing in the network to a device for extracting the fundamental component; modelling the fundamental component of the current flow in the network from a model that is particular to the extraction device; calculating the fundamental component from the model; subtracting the fundamental component form the measured current in order to obtain the total polluting current; generating a control corresponding to the total polluting current; and transmitting the control to the inverter so that the inverter generates a current proportional to the total polluting current.