Off grid backup inverter automatic transfer switch
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United States of America Patent
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Jul 18, 2017
Grant Date -
N/A
app pub date -
Oct 31, 2013
filing date -
Nov 6, 2012
priority date (Note) -
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Abstract
A power conversion system for use with an alternate energy source includes a first inverter, a battery, and a second inverter, each of which receives power from the alternate energy source. The output of the first inverter and the grid are each connected to at least one electrical load via a load center. The battery is charged via a charger connected to the alternate energy source. This stored energy powers a selected portion of the electrical loads during a failure of the utility grid. The second inverter is connected between the battery and a transfer switch. During normal grid operation, the second inverter is disabled and the transfer switch connects the load center to the selected electrical loads. During a failure of the utility grid, the first inverter is disabled, the second inverter is enabled, and the transfer switch connects the second inverter to the selected electrical loads.
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