High dynamic DC-voltage controller for photovoltaic inverter
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United States of America Patent
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May 17, 2016
Grant Date -
Dec 6, 2012
app pub date -
Jun 13, 2011
filing date -
Jun 3, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method for initializing a power inverter of a photovoltaic system includes: opening an AC mains switch and a DC switch to disconnect the power inverter from an electrical grid and to disconnect a capacitor bank associated with the inverter from a solar cell array; closing the AC mains switch to allow power to flow from an electrical grid to the DC capacitor bank to charge the DC capacitor bank; monitoring the DC capacitor bank until a desired voltage is reached; initiating the operation of the power inverter; stabilizing the DC voltage received from the DC capacitor bank at a predetermined power up voltage for the power inverter; waiting for an inverter initialization period to elapse; and adjusting DC voltage received by the power inverter to a voltage associated with a maximum power output level of the solar cell array.
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