Uninterruptible power supply
First Claim
1. An apparatus for uninterruptedly supplying power as alternating current to an electrical load being supplied with power by an external power source during normal conditions, comprising:
- a coupling choke being operably arranged between the electrical load and the external source of power;
a generator with a single winding being operably connected to said coupling choke on the side of the electrical load and being designed and arranged to be active during normal conditions and during trouble conditions in case the external source of power fails;
an IGBT converter being directly connected to said coupling choke;
a substitute storage device for electrical energy being operably connected to said coupling choke on the side of the electrical load by said converter;
a fast-opening switch being operably connected said coupling choke on the side of the source of power and being designed and arranged to open in case of occurring trouble conditions;
a first unit being designed and arranged to sense an output voltage being supplied to the electrical load and to produce a measuring signal;
a second unit being designed and arranged to control the output voltage, to use the measuring signal as an input signal, to deliver a control signal as an output signal to said converter and to control the output voltage to a desired shape over time; and
said first and second units being designed to operate both during normal and trouble conditions to improve the quality of the power supply to the electrical load also during normal conditions.
3 Assignments
0 Petitions
Accused Products
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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Citations
19 Claims
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1. An apparatus for uninterruptedly supplying power as alternating current to an electrical load being supplied with power by an external power source during normal conditions, comprising:
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a coupling choke being operably arranged between the electrical load and the external source of power;
a generator with a single winding being operably connected to said coupling choke on the side of the electrical load and being designed and arranged to be active during normal conditions and during trouble conditions in case the external source of power fails;
an IGBT converter being directly connected to said coupling choke;
a substitute storage device for electrical energy being operably connected to said coupling choke on the side of the electrical load by said converter;
a fast-opening switch being operably connected said coupling choke on the side of the source of power and being designed and arranged to open in case of occurring trouble conditions;
a first unit being designed and arranged to sense an output voltage being supplied to the electrical load and to produce a measuring signal;
a second unit being designed and arranged to control the output voltage, to use the measuring signal as an input signal, to deliver a control signal as an output signal to said converter and to control the output voltage to a desired shape over time; and
said first and second units being designed to operate both during normal and trouble conditions to improve the quality of the power supply to the electrical load also during normal conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An uninterruptible power supply system, comprising:
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a coupling choke being operably arranged between an external source of power and an electrical load to be supplied with power by the external source of power during normal conditions;
a generator with a single winding being operably connected to said coupling choke on the side of the electrical load and being designed and arranged to be active during normal conditions and during trouble conditions in case the external source of power fails;
an IGBT converter being directly connected to said coupling choke;
a substitute storage device for electrical energy being operably connected to said coupling choke on the side of the electrical load by said converter;
a fast-opening switch being operably connected said coupling choke on the side of the source of power and being designed and arranged to open in case of occurring trouble conditions;
a first unit being designed and arranged to sense an output voltage being supplied to the electrical load and to produce a measuring signal;
a second unit being designed and arranged to control the output voltage, to use the measuring signal as an input signal, to deliver a control signal as a output signal to said converter and to control the output voltage to a desired shape over time; and
said first and second units being designed to operate both during normal and trouble conditions to improve the quality of the power supply to the electrical load also during normal conditions. - View Dependent Claims (17)
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18. An uninterruptible power supply system, comprising:
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a coupling choke being operably arranged between an external source of power and an electrical load to be supplied with power by the external source of power during normal conditions;
a generator with a single winding being operably connected to said coupling choke and being designed and arranged to be active during normal conditions and during trouble conditions in case the external source of power fails;
an IGBT converter being directly connected to said coupling choke;
a substitute storage device for electrical energy being operably connected to said coupling choke by said converter;
a switch being operably connected said coupling choke and being designed and arranged to open quickly in case of occurring trouble conditions;
a first unit being designed and arranged to sense an output voltage being supplied to the electrical load and to produce a measuring signal;
a second unit being designed and arranged to control the output voltage, to use the measuring signal as an input signal, to send a control signal as an output signal to said converter and to control the output voltage to attain a desired shape over time; and
said first and second units being designed to operate both during normal and trouble conditions to improve the quality of the power supply to the electrical load also during normal conditions. - View Dependent Claims (19)
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Specification