POWER SUPPLY METHOD AND UNINTERRUPTIBLE POWER SUPPLY SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a power supply method which is reduced in the difference of a charging time to each power compensating device, regardless of the presence of a variation in the charging capacity of the power compensating devices corresponding to a plurality of UPSes connected in parallel, and can prevent an early trouble and the parallel-off of the UPSes connected to the power compensating device reduced in capacity even in the case of a power loss on a host side, and to provide an uninterruptible power supply system. PSOLUTION: Charging states of the power compensating devices 6 are provided to every two uninterruptible power supply systems (1 to n) connected in parallel are detected. Then, power supply sharing to a load 7 is lowered to the uninterruptible power supply system connected to the power compensating device 6 low in charging capacity, whereas the sharing of the other uninterruptible power supply device 2 is increased to compensate the reduction in the sharing to secure power required by the load. PCOPYRIGHT: (C)2006,JPO&NCIPI