Systems and methods for balancing UPS output voltages during transitions between operating modes

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United States of America Patent

PATENT NO 9531288
SERIAL NO

14078884

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Abstract

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A UPS includes an input that receives first power from a utility source to power a load and receives second power from the utility source. The load is separate from the UPS. An inverter receives when in a first mode, the first and second power and when in a second mode, the second power and not the first power. The second power is used to power the inverter. A bypass circuit is connected to the input and bypasses the inverter to supply the first power to an output of the UPS when operating in the second mode. A control module detects a voltage at the output of the UPS, integrates the voltage to generate a first sum, and subsequent to completing a transition between the first and second modes, adjusts an output voltage of the inverter based on the first sum to balance the voltage of the UPS.

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Patent Owner(s)

  • LIEBERT CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bush, Terry D Westerville, US 23 192
Heber, Brian P Delaware, US 15 118
Shetler,, Jr Russell E Delaware, US 6 42

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