Multi-level active filter

Details Multi-level active filter Multi-level active filter

G - Physics

05

F

G05F 1/70 (2006.01) H02J 3/18 (2006.01)

Patent

CA 2608741

A multi-phase active filter (234) includes a group of power cells (241-252) electrically connected in a three-phase configuration, a precharging circuit (260) , and a controller (350) that controls the voltage delivered to the plurality of power cells (241-252) . Each power cell includes an inverter (300) having a pair of direct current terminals, at least one capacitor (320) electrically connected in parallel with the inverter (300) , and an energy dissipating circuit (330) that is electrically connected in parallel with the inverter (300) . The energy dissipating circuit (330) of each power cell self - regulates DC voltage within the cell.

L'invention porte sur un filtre actif à plusieurs phases comprenant un groupe de piles électriquement reliées, selon une configuration à trois phases, à un circuit de préchargement, et un contrôleur qui contrôle la tension appliquée à la pluralité de piles. Chaque pile comprend un inverseur équipé d'une paire de terminaux à courant continu (CC), au moins un condensateur étant électriquement relié en parallèle à l'inverseur, et un circuit de dispersion d'énergie qui est électriquement relié en parallèle à l'inverseur. Le circuit de dispersion d'énergie de chaque pile auto-régule la tension CC dans la pile.

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