Inverter array with localized inverter control
First Claim
1. An apparatus to deliver alternating current (AC) power, the apparatus comprising:
- a plurality of inverters configured to receive direct current (DC) power from a respective DC power source and respectively provide AC power to an AC load;
a primary controller configured to generate a primary control signal based on total AC current and total AC voltage being delivered to the AC load by the plurality of inverters; and
a plurality of secondary controllers configured to each receive the primary control signal and produce a respective secondary control signal based on the primary control signal, wherein the respective secondary control signal for each of the plurality of secondary controllers controls a corresponding one of the plurality of inverters to provide the respective AC power.
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Accused Products
Abstract
An apparatus for delivering AC power to an AC load may include a plurality of inverters to receive direct current (DC) power from a respective DC power source and respectively provide AC power to an AC load. The apparatus may further include a first controller to generate a first control signal based on total AC current and total AC voltage being delivered to the AC load by the plurality of inverters. The apparatus may further include a plurality of secondary controllers to each receive the first control signal and each produce a respective secondary control signal based on the first control signal. The respective secondary control signal for each of the plurality of secondary controllers is configured to control a corresponding one of the plurality of inverters to provide a portion of the AC power.
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Citations
20 Claims
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1. An apparatus to deliver alternating current (AC) power, the apparatus comprising:
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a plurality of inverters configured to receive direct current (DC) power from a respective DC power source and respectively provide AC power to an AC load; a primary controller configured to generate a primary control signal based on total AC current and total AC voltage being delivered to the AC load by the plurality of inverters; and a plurality of secondary controllers configured to each receive the primary control signal and produce a respective secondary control signal based on the primary control signal, wherein the respective secondary control signal for each of the plurality of secondary controllers controls a corresponding one of the plurality of inverters to provide the respective AC power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling alternating current (AC) power delivered to an AC load, the method comprising:
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producing the AC power with an array of inverters based on an amount of received respective DC power; generating a first control signal in response to the AC power; generating a plurality of second control signals in response to the first control signal; and controlling respective output AC power of each inverter of the array of inverters based on a corresponding one of the second control signals, wherein the AC power is a combination of the respective output AC power of each inverter of the array of inverters. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer-readable medium comprising a plurality of instructions executable by a processor, the computer-readable medium comprising:
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instructions to direct an array of inverters to generate AC power based on an amount of received respective DC power; instructions to generate a first control signal in response to the AC power; instructions to generate a plurality of second control signals in response to the first control signal; and instructions to control respective output AC power of each inverter of the array of inverters based on a corresponding one of the second control signals, wherein the AC power is a combination of the respective output AC power of each inverter of the array of inverters. - View Dependent Claims (18, 19, 20)
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Specification