Power conversion apparatus

H - Electricity – 02 – M

Patent

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Details

H02M 7/219 (2006.01) H02J 7/02 (2006.01) H02M 7/23 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2405192

In a power conversion apparatus having a plurality of AC power supplies, even if an abnormality occurs in any one of the AC power supplies and loads that are respectively connected to two capacitors are not balanced, voltages of the two capacitors are balanced. In the power conversion apparatus of the present invention, in the case where an abnormality occurs in a first or second AC power supply, a first reactor is connected to a second reactor in series, a battery supplies energy to the two capacitors, and a current flowing to the first reactor is controlled by the series body of a first switching means. In this manner, there is controlled a voltage difference between the two capacitors.

La présente invention se rapporte à un convertisseur de puissance comportant une pluralité d'alimentations C.A. dans lesquelles les tensions de deux condensateurs sont équilibrées lorsque l'alimentation C.A. est anormale même si des charges connectées, respectivement, aux deux condensateurs ne sont pas équilibrées. Lorsqu'une première ou une seconde alimentation C.A. du convertisseur de puissance est anormale, une première et une seconde bobine de réactance sont connectées en série et une batterie alimente en énergie les deux condensateurs. Un circuit en série de premiers moyens de commutation commande le passage du courant dans la première bobine de réactance ce qui régule la différence de tension entre les deux condensateurs.

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