| 摘要 |
PROBLEM TO BE SOLVED: To provide a power leveling device that can individually perform charge/discharge control of a plurality of FW devices and has excellent operation efficiency.SOLUTION: A power leveling device comprises: a plurality of variable-voltage variable-frequency power supplies VVVF c1 to cn corresponding to a plurality of FW devices a1 to an; a FW group control unit 50 that selects, on the basis of a P instruction to an interconnection inverter 4a and FW revolving speed of the plurality of FW devices a1 to an, one or a plurality of FW devices a1 to an on which charging/discharging is to be performed, and calculates an individual power instruction Pto the selected FW device ai; and a frequency instruction calculation block 40 for calculating an individual frequency instruction fon the basis of the individual power instruction P. The variable-voltage variable-frequency power supplies VVVF c1 to cn perform V/f control of an induction motor of the FW device ai selected by the FW group control unit 50, by using the individual frequency instruction f. |
