| 摘要 |
PROBLEM TO BE SOLVED: To provide a distributed power supply power storage system capable of improving the charging efficiency of an accumulator battery.SOLUTION: A distributed power supply power storage system comprises: a bi-directional inverter 14 performing power conversion of a power supplied from a distributed power supply 11 whose generation power is irregularly changed to charge a battery pack 12 with the converted power, and performing discharge to supply the charged power to a load 13; a measurement part 15 measuring an average accumulator battery temperature of lead accumulator batteries configuring the battery pack 12 and a stop time period of the batteries from previous charging or discharging to the present time; and a controller 16, when performing uniform charging configured by a plurality of stages of charging processes to the battery pack 12 on the basis of measurement results of the measurement part, setting a charging current correction coefficient &eegr; (0<&eegr;<1.00) to be multiplied to a charging current value of the uniform charging, and controlling the bi-directional inverter 14 to correct the charging current value. |
