Method and circuit for using polarized device in ac...

H - Electricity – 02 – J

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H02J 15/00 (2006.01) H02H 7/16 (2006.01) H02J 3/00 (2006.01)

Patent

CA 2396396

Polarized electric charge storage devices economically provide high available capacitance. The present invention directly employs polarized electrical charge storage (PECS) devices such as polarized capacitors (612, 614) or electrochemical batteries in general AC applications with a novel circuit topology. In one embodiment, an anti-series configuration of first (612) and second (614) PECS devices are used within an AC network for enhancing operation of the AC network. At least one DC source (616, 618) is provided for maintaining the PECS devices forwardly biased while they are subjected to an AC signal. The AC signal, which drives an AC load (620), is applied to the anti-series devices (610). The devices are sufficiently biased by the at least one DC voltage source so that they remain forwardly biased while coupling the AC signal.

L'invention concerne des dispositifs polarisés de stockage de charge électrique, lesquels fournissent à bon marché une capacité disponible élevée, et elle met en oeuvre directement ces dispositifs, tels que des condensateurs (612, 614) ou batteries électrochimiques polarisés, dans des applications générales en courant alternatif, au moyen d'une nouvelle topologie de circuit. Dans un mode de réalisation, on utilise, dans un réseau en courant alternatif, un agencement non en série d'un premier (612) et d'un second (614) dispositif, polarisés, de stockage de charge électrique, afin d'améliorer le fonctionnement de ce réseau. Une source en courant alternatif (616, 618), au moins, sert à conserver ces dispositifs de stockage, polarisés en sens direct, tandis qu'ils sont soumis à un signal en courant alternatif. Ce signal en courant alternatif, qui commande une charge en courant alternatif (620), est appliqué aux dispositifs non montés en série (610), lesquels sont suffisamment polarisés par au moins la source de tension en courant continu, de façon à conserver une polarisation en sens direct lors du couplage du signal en courant alternatif.

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