| 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 provided correspondingly to a plurality of FW devices a1 to an, respectively; a FW group control unit 50 that selects, on the basis of a P instruction 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 torque instruction calculation block 40 for calculating an individual torque instruction Ton the basis of the individual power instruction P. The variable-voltage variable-frequency power supplies VVVF c1 to cn perform vector control of an induction motor of the FW device ai selected by the FW group control unit 50, by using the individual torque instruction Tcalculated by the torque instruction calculation block 40. |
