| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a tidal current flowing in an AC switch (ACSW) that configures an uninterruptible power supply properly. <P>SOLUTION: An electric power system has: an uninterruptible power supply device 100 having an AC switch 120 provided between a commercial power supply 200 and an output part 102, a storage battery 130, and an inverter 135 installed between the AC switch 120 and the storage battery 130; a critical load 150 connected to the output part 102; a solar battery 140 connected to the output part 102; a power detection part 181 that detects a power consumed by a total load including the critical load 150; a power detection part 131 that detects the charge/discharge power in the storage battery 130; and a controller 110 that receives detection values detected by the power detection part 181 and a power detection part 131, and outputs a control command value for controlling the storage battery 130. The controller 110 decides the upper limit value and the lower limit value of the control command value for operating the storage battery 130, based on the detection value detected by the power detection part 181 and the power detection part 131. <P>COPYRIGHT: (C)2012,JPO&INPIT |
