Uninterruptible power supply converter circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12249864
APP PUB NO 20230268764A1
SERIAL NO

18304917

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Importance

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Abstract

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An uninterruptible power supply (UPS) converter circuit includes a controlled switching element, a filter capacitor, and a split DC capacitor comprising a plus DC capacitor and a minus DC capacitor split at a DC-link mid-point, connected to each other at the DC-link mid-point on a respective first side. A second side of the input filter capacitor at an AC point is coupled via an inductor element to a second side of the controlled switching element, the second side of the controlled switching element being coupled to the second side of the plus DC capacitor and the minus capacitor. The controlled switching element operates is configured to be controlled such that a current from the AC point via the inductor element flows alternatingly to either the plus DC output capacitor or the minus DC capacitor, and to the DC-link mid-point, respectively, thereby discharging the input filter capacitor.

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Patent Owner(s)

  • ABB SCHWEIZ AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Giuntini, Lorenzo Locarno, CH 22 128

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