Abstract
The principles of current filtering in three-phase three-wire power supply system at an asymmetric sinusoidal source that correspond to the actual European standard are considered. The advantages of forming a sinusoidal symmetrical input current by parallel connection of the active filter and the reactive compensator are shown. The feasibility to compensate the inactive sinusoidal Fryze's current by reactive elements under arbitrary combination of load and source parameters is proved and formula for direct calculation of the reactive compensator parameters for generation of inactive Fryze's current in the source unbalanced mode is obtained. Results of numeric modelling are given.
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