Systems and methods for providing increased fault current capability in uninterruptible power supply systems
First Claim
Patent Images
1. A system comprising:
- a ring bus;
at least one voltage source; and
a plurality of uninterruptible power supplies (UPSs) electrically coupled between said at least one voltage source and said ring bus, wherein at least one UPS of said plurality of UPSs comprises;
an input;
an output;
a rectifier comprising a rectifier input and a rectifier output;
an inverter comprising an inverter input and an inverter output, wherein said rectifier output is electrically coupled to said inverter input; and
a bypass switch electrically coupled between said rectifier input and said inverter output, said bypass switch configured to close in response to detection of a fault on said ring bus.
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Abstract
A system is provided. The system includes a ring bus, at least one voltage source, and a plurality of uninterruptible power supplies (UPSs) electrically coupled between the at least one voltage source and the ring bus, wherein at least one UPS of the plurality of UPSs includes an input, an output, a rectifier having a rectifier input and a rectifier output, an inverter having an inverter input and an inverter output, wherein the rectifier output is electrically coupled to the inverter input, and a bypass switch electrically coupled between the rectifier input and the inverter output, the bypass switch configured to close in response to detection of a fault on the ring bus.
57 Citations
20 Claims
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1. A system comprising:
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a ring bus; at least one voltage source; and a plurality of uninterruptible power supplies (UPSs) electrically coupled between said at least one voltage source and said ring bus, wherein at least one UPS of said plurality of UPSs comprises; an input; an output; a rectifier comprising a rectifier input and a rectifier output; an inverter comprising an inverter input and an inverter output, wherein said rectifier output is electrically coupled to said inverter input; and a bypass switch electrically coupled between said rectifier input and said inverter output, said bypass switch configured to close in response to detection of a fault on said ring bus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An uninterruptible power supply (UPS) for use in a ring bus system, said UPS comprising:
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an input configured to be electrically coupled to a voltage source; an output configured to be electrically coupled to a ring bus; a rectifier comprising a rectifier input and a rectifier output; an inverter comprising an inverter input and an inverter output, wherein said rectifier output is electrically coupled to said inverter input; and a bypass switch electrically coupled between said rectifier input and said inverter output, said bypass switch configured to close in response to detection of a fault on the ring bus. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for generating fault current in a power system that includes a ring bus, at least one voltage source, and a plurality of uninterruptible power supplies (UPSs) electrically coupled between the at least one voltage source and the ring bus, wherein at least one UPS of the plurality of UPSs includes an input, an output, a rectifier comprising a rectifier input and a rectifier output, an inverter comprising an inverter input and an inverter output, wherein the rectifier output is electrically coupled to the inverter input, and a bypass switch electrically coupled between the rectifier input and the inverter output, said method comprising:
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detecting a fault on the ring bus; and closing the bypass switch in response to detecting the fault. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification