Uninterruptible power supply apparatus

H - Electricity – 02 – J

Patent

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Details

H02J 9/06 (2006.01)

Patent

CA 2722263

In an uninterruptible power supply apparatus, a common mode current flowing from nodes (N1 to N3) to a line of a ground voltage (GND) through a stray capacitance (41) of a battery (40) is limited by a common mode reactor (34), and the low- level common mode current passing through the common mode reactor (34) is caused to flow to a virtual neutral line (NL) through a common mode capacitor (37). Therefore, the level of noise caused by the common mode current can be reduced

Dans le système d'alimentation sans coupure selon la présente invention, un courant de mode commun circulant des noeuds (N1-N3) jusqu'à une ligne à une tension de mise à la terre (GND) au moyen d'une capacitance flottante (41) d'une batterie (40) est limité par une bobine de réactance de mode commun (31), et un courant de mode commun de faible niveau qui est passé par la bobine de réactance de mode commun (31) est autorisé à circuler jusqu'à une ligne neutre virtuelle (NL) au moyen d'un condensateur de mode commun (37). Ainsi, le niveau de bruit dû au courant de mode commun peut être réduit.

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