Remotely controllable modular power control device for power generation
First Claim
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1. A power adjusting circuit comprising:
- a sensor positioned at an output of an inverter to measure a voltage and a current of a first AC signal output by the inverter;
an AC/DC/AC converter connected to the output of the inverter to receive the first AC signal output from the inverter; and
a controller wirelessly receives a request signal including a first amount of desired active power and a second amount of desired reactive power, determines a third amount of active power and a fourth amount of reactive power in the first AC signal from the measured voltage and current, determines an adjustment signal based on the first through fourth amounts, and applies the adjustment signal to the AC/DC/AC converter to cause the AC/DC/AC converter to convert the first AC signal to a second AC signal having the first amount of the desired active power and the second amount of the desired reactive power,wherein the inverter comprises a DC/DC converter receiving an output of a photovoltaic array and a DC/AC converter receiving an output of the DC/DC converter.
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Abstract
A power adjusting circuit includes a sensor configured to measure a voltage and a current of the first AC output by an inverter, an AC/DC/AC converter configured to receive the first AC output from the inverter, and a controller configured to convert the first AC output to a second AC output having a desired power factor.
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Citations
22 Claims
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1. A power adjusting circuit comprising:
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a sensor positioned at an output of an inverter to measure a voltage and a current of a first AC signal output by the inverter; an AC/DC/AC converter connected to the output of the inverter to receive the first AC signal output from the inverter; and a controller wirelessly receives a request signal including a first amount of desired active power and a second amount of desired reactive power, determines a third amount of active power and a fourth amount of reactive power in the first AC signal from the measured voltage and current, determines an adjustment signal based on the first through fourth amounts, and applies the adjustment signal to the AC/DC/AC converter to cause the AC/DC/AC converter to convert the first AC signal to a second AC signal having the first amount of the desired active power and the second amount of the desired reactive power, wherein the inverter comprises a DC/DC converter receiving an output of a photovoltaic array and a DC/AC converter receiving an output of the DC/DC converter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power adjusting circuit comprising:
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a sensor positioned at an output of an inverter to measure a voltage and a current of a first AC signal output by the inverter; a first AC/DC/AC converter connected to the output of the inverter to receive the first AC signal output from the inverter and a first controller that controls the first AC/DC/AC converter; and a second AC/DC/AC converter connected to the output of the inverter to receive the first AC signal output from the inverter and a second controller that controls the second AC/DC/AC converter, wherein the controllers negotiate with one another to determine first and second amounts of active power to provide, and third and fourth amounts of reactive power to provide, wherein the first controller applies a first adjustment signal to the first AC/DC/AC converter based on the first amount and the third amount and the second controller applies a second adjustment signal to the second AC/DC/AC converter based on the second amount and fourth amount, to cause the AC/DC/AC converters to collectively generate a second AC signal having a different power factor from the first AC signal, the second AC signal having an amount of active power totaling the first and second amounts and an amount of reactive power totaling the third and fourth amounts. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 22)
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15. A power adjusting circuit comprising:
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a sensor positioned at an output of an inverter to measure a voltage and a current of a first AC signal output by the inverter; a first AC/DC/AC converter connected to an output of the inverter to receive the first AC signal output from the inverter and a first controller that controls the first AC/DC/AC converter; a second AC/DC/AC converter connected to an output of the inverter to receive the first AC signal output from the inverter and a second controller that controls the second AC/DC/AC converter; and a central controller informs the first controller of a first amount of power to provide and informs the second controller of a second amount of power to provide, wherein the first controller applies a first adjustment signal to the first AC/DC/AC converter based on the first amount and the second controller applies a second adjustment signal to the second AC/DC converter based on the second amount, to cause the AC/DC/AC converters to collectively generate a second AC signal having a desired power factor different from the first AC signal, wherein, periodically, the first controller applies the first adjustment signal to the first AC/DC/AC converter and the second controller applies the second adjustment signal to the second AC/DC/AC converter, to gradually produce the second AC signal having the desired power factor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification