Power conversion device

Details Power conversion device Power conversion device

H - Electricity

02

M

H02M 7/483 (2007.01) H02J 9/06 (2006.01)

Patent

CA 2740765

A power converter (100) is provided with an inverter (4) for supplying a load with power by converting direct current power into alternating current power; a converter (3) for supplying the inverter (4) with power by converting the alternating current power supplied from an alternating current power supply (1) into direct current power; a direct current voltage converter (7), which converts a voltage value of power stored in an accumulator (8) and supplies the inverter (4) with the direct current power from the accumulator (8) when the power supply from the alternating current power supply (1) is abnormal; and a filter (5), which includes a reactor and a capacitor, and removes harmonic generated by the inverter (4). The inverter (4) includes a three-level circuit composed of an arm (4UA) and an AC switch (4UB).

Linvention concerne un convertisseur de puissance (100) pourvu dun inverseur (4) servant à alimenter en courant une charge, en convertissant un courant continu en un courant alternatif, dun convertisseur (3) servant à alimenter en courant linverseur (4) en convertissant en un courant continu le courant alternatif fourni par une alimentation en courant alternatif (1), dun convertisseur (7) de tension de courant continu qui convertit une valeur de tension de lénergie stockée dans un accumulateur (8) et fournit à linverseur (4) le courant continu provenant de laccumulateur (8) lorsque la fourniture de courant par lalimentation en courant alternatif (1) présente une anomalie, et un filtre (5) qui comprend un réacteur et un condensateur et supprime lharmonique générée par linverseur (4). Linverseur (4) comprend un circuit à trois niveaux composé dun bras (4UA) et dun commutateur CA (4UB).

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