An active filter device

Details An active filter device An active filter device

H - Electricity

02

J

H02J 3/01 (2006.01)

Patent

CA 2283294

An active filter device provided for compensating harmonic distortion in a supply line by injecting for each harmonic (f k) to be considered a compensation current. The latter being determined by injecting a monitoring current on the supply line at a first (f1) and second (f2) frequency value, off set from the considered harmonic and measuring a response current generated by the supply line upon injection of said monitoring current.

L'invention concerne un dispositif de filtre actif destiné à compenser la distorsion harmonique dans une ligne d'alimentation par injection, pour chaque harmonique (fk) à considérer, d'un courant de compensation. Ce dernier est déterminé par injection d'un courant de contrôle dans la ligne d'alimentation à une première valeur de fréquence (f1) et une seconde valeur de fréquence (f2) décalées de l'harmonique considérée, et par mesure d'un courant de réponse généré par la ligne d'alimentation lors de l'injection dudit courant de contrôle.

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