Power transfer management for local power sources of a grid-tied load
First Claim
1. A method comprising:
- receiving, at an AC/DC (alternating current to direct current) power supply, alternating current (AC) power from an AC power system, where the AC power provides a source current at a source phase with respect to a source voltage;
delivering the AC power to an AC/DC converter of the power supply, including adjusting a phase of current delivered to the AC/DC converter from the source phase to a second phase with the current delivered in phase with respect to an AC voltage of the AC/DC converter instead of in phase with respect to the source voltage;
converting the delivered AC power into direct current (DC) power with the AC/DC converter; and
delivering the DC power to a load of the power supply.
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Accused Products
Abstract
A power transfer system provides power factor conditioning of the generated power. Power is received from a local power source, converted to usable AC power, and the power factor is conditioned to a desired value. The desired value may be a power factor at or near unity, or the desired power factor may be in response to conditions of the power grid, a tariff established, and/or determinations made remotely to the local power source. Many sources and power transfer systems can be put together and controlled as a power source farm to deliver power to the grid having a specific power factor characteristic. The farm may be a grouping of multiple local customer premises. AC power can also be conditioned prior to use by an AC to DC power supply for more efficient DC power conversion.
24 Citations
18 Claims
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1. A method comprising:
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receiving, at an AC/DC (alternating current to direct current) power supply, alternating current (AC) power from an AC power system, where the AC power provides a source current at a source phase with respect to a source voltage; delivering the AC power to an AC/DC converter of the power supply, including adjusting a phase of current delivered to the AC/DC converter from the source phase to a second phase with the current delivered in phase with respect to an AC voltage of the AC/DC converter instead of in phase with respect to the source voltage; converting the delivered AC power into direct current (DC) power with the AC/DC converter; and delivering the DC power to a load of the power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power extractor, comprising:
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an alternating current to direct current (AC/DC) converter to convert AC power into DC power, and deliver the DC power to a load; and a power factor conditioner circuit to receive AC power from an AC power system that is to provide a source current at a source phase with respect to a source voltage, adjust a phase of current to be delivered to the AC/DC converter from the source phase to a second phase with the current to be delivered in phase with respect to an AC voltage of the AC/DC converter instead of in phase with respect to the source voltage; wherein the AC/DC converter is to convert the conditioned AC power into DC power. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification