REDUNDANT CONTROL SYSTEMS, METHODS, AND DEVICES FOR PARALLEL INVERTER INSTALLATIONS
First Claim
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1. A parallel uninterruptible power supply (UPS) system comprising:
- a plurality of inverter feed paths to supply double-conversion power to a load; and
a plurality of UPS controllers communicatively coupled to one another via at least two redundant data busses, wherein each of the plurality of UPS controllers is configured to operate in conjunction with one another to control the plurality of feed paths.
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Abstract
Systems, methods, and devices are provided for redundant control of parallel inverter installations. In one example, a parallel uninterruptible power supply (UPS) system may include several inverter feed paths and several UPS controllers. The inverter feed paths may supply double-conversion power to a load. The UPS controllers may be communicatively coupled to one another via at least two redundant data busses. The UPS controllers may operate in conjunction with one another to control the plurality of feed paths.
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Citations
20 Claims
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1. A parallel uninterruptible power supply (UPS) system comprising:
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a plurality of inverter feed paths to supply double-conversion power to a load; and a plurality of UPS controllers communicatively coupled to one another via at least two redundant data busses, wherein each of the plurality of UPS controllers is configured to operate in conjunction with one another to control the plurality of feed paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An uninterruptible power supply (UPS) controller comprising:
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communication circuitry configured to communicate with other UPS controllers in a parallel UPS system via at least two redundant communication busses, wherein the communication circuitry comprises logic to identify when one of the redundant data busses has failed and to communicate using the remaining one of the two redundant data busses that has not failed; and data processing circuitry configured to control at least one of a plurality of double-conversion feed paths of the parallel UPS system based at least in part on data received from the other UPS controllers in the parallel UPS system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An article of manufacture comprising:
one or more tangible, machine-readable media at least collectively comprising machine-executable instructions configured to run on an uninterruptible power supply (UPS) controller in a parallel UPS system and in communication with other UPS controllers in the parallel UPS system, the instructions comprising; instructions to receive first electrical measurements associated with at least one of a plurality of inverter feed paths of the parallel UPS system; instructions to determine whether the controller itself or one of the other controllers is a master controller over all of the controllers in the parallel UPS system; instructions to, when the controller is determined to be the master controller, receive from the other controllers indications of other electrical measurements associated with all but the at least one of the plurality of inverter feed paths; and instructions to, when the controller is determined to be the master controller, control the at least one of the plurality of inverter feed paths based at least in part on the first electrical measurements and the other electrical measurements. - View Dependent Claims (19, 20)
Specification