| 摘要 |
PURPOSE:To compensate the voltage drops of output feeders, to lessen the dispersion of the voltage between the output feeders, and to limit output terminal voltage within control values even if the output terminal voltage exceeds the limited value of the upper or lower limit. CONSTITUTION:A value averaging circuit 1 averages the voltage values at the output terminal voltage detecting points D21-D2n of output feeders which supply power from a CVCF to loads. A deviation detector 8 compares this averaged voltage with a reference voltage, and a control command producing section 9 supplies a control command to an UPS in accordance with its deviation output. |
