Patent ID: 7615893

Claim:
A power distribution system for supplying power from an AC voltage source at a first location to a plurality of electrical devices at a remote location, the power distribution system comprising: a plurality of AC/DC voltage converters at the first location having an input side of each AC/DC voltage converter connected to the AC source and having an output side of each AC/DC voltage converter connected to an electrical conductor that extends from the first location to the remote location and couples to the electrical devices, and a plurality of DC voltage converters for disposal at the remote location, each having an input side connected to the electrical conductor and an output side connected to the electrical devices for providing a converted DC or AC voltage to the electrical device, wherein the plurality of DC voltage converters are controlled independently to provide the converted DC or AC voltage based on demand from the electrical devices, wherein each electrical device selectively opens and closes a fluid line using the converted DC or AC voltage and without hydraulics.