Uninterruptible power supply
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United States of America Patent
Stats
-
Sep 30, 2003
Grant Date -
Jul 26, 2001
app pub date -
Jan 19, 2001
filing date -
Jan 21, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An uninterruptible power supply system (UPS) includes a coupling choke (5) being operably arranged between an electrical load (2) and an external source of power (4). A generator (8) is operably connected to the coupling choke (5) on the side of the electrical load (2), and it is designed and arranged to be active during normal conditions and during trouble conditions. Trouble conditions are to be understood as conditions when the external source of power (4) fails. A converter (9) is operably connected to the coupling choke (5). A substitute storage device for electrical energy is operably connected to the coupling choke (5) on the side of the electrical load (2) by the converter (9). A fast-opening switch (6) is operably connected the coupling choke (5) on the side of the source of power (4), and it is designed and arranged to open in case of occurring trouble conditions. A first unit (12) is designed and arranged to sense an output voltage being supplied to the electrical load (2) and to produce a measuring signal (25). A second unit (27) is designed and arranged to control the output voltage, to use the measuring signal (25) as an input signal, to deliver a control signal (26) as an output signal to the converter (9) and to control the output voltage to attain a desired shape over time.
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