Renewable energy power generation systems
First Claim
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1. A method comprising:
- receiving power data from each of a plurality of inverter modules, each inverter module having a dc power input and an ac power output coupled to a common grid power feed;
tallying a net level of ac power from each of said inverter modules to determine a total net level of ac power provided by said plurality of inverter modules to said common grid power feed;
determining a number of capacitors for each of the plurality of inverter modules to switch into/out of a parallel connection across its respective said ac power outputs based on said total net level of ac power; and
controlling each of said inverter modules to switch the determined number of capacitors into/out of said parallel connections of the inverter module.
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Abstract
We describe a modular adjustable power factor renewable energy inverter system. The system comprises a plurality of inverter modules having a switched capacitor across its ac power output, a power measurement system coupled to a communication interface, and a power factor controller to control switching of the capacitor. A system controller receives power data from each inverter module, sums the net level of ac power from each inverter, determines a number of said capacitors to switch based on the sum, and sends control data to an appropriate number of the inverter modules to switch the determined number of capacitors into/out of said parallel connection across their respective ac power outputs.
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13 Claims
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1. A method comprising:
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receiving power data from each of a plurality of inverter modules, each inverter module having a dc power input and an ac power output coupled to a common grid power feed; tallying a net level of ac power from each of said inverter modules to determine a total net level of ac power provided by said plurality of inverter modules to said common grid power feed; determining a number of capacitors for each of the plurality of inverter modules to switch into/out of a parallel connection across its respective said ac power outputs based on said total net level of ac power; and controlling each of said inverter modules to switch the determined number of capacitors into/out of said parallel connections of the inverter module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification