Power supply system
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
May 24, 2012
filing date -
May 24, 2012
priority date (Note) -
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Abstract
When an AC line of one local system and a power system are in a parallel-off state, a control device included in a power supply system causes local inverter devices of the local systems to operate in a parallel-off operation mode in which control is performed such that the voltage and frequency of power on the AC line is at a target voltage and a target frequency determined according to the state of charge of a power storage device. When a condition for switching to the connected state has been satisfied, the control device stops operation of the local inverter device in the parallel-off operation mode and causes a switch to the connected state by operating the interrupting device, and thereafter causes the local inverter device to operate in a charging operation mode used in charging the power storage device with supplementary power received from the power system.
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