| 摘要 |
PURPOSE:To reduce voltage fluctuation in load feed and prevent the operation fault of a load-side equipment, and to improve profitability while enhancing the efficiency of a power system by lengthening the distance of a DC electric wiring, to shorten a wiring distance between a converter having a voltage control function and load and directly supplying DC power from the converter. CONSTITUTION:The Ac power of an AC input power supply 11 is converted into DC power by a rectifier 12, the Dc power is Dc-distributed to each converter 161-163 by an externally wired DC bus 15, and each converter 161-163 converts DC power into DC power having different voltage. Each converter 161-163 is changed into converters, in which output voltage can be controlled, by known chopper control, etc., thus turning Dc power fed to each load 171-173 by each converter 161-163 into stabilized DC power in which voltage fluctuation is inhibited. When momentary voltage drop and service interruption, etc., are generated in the AC input power supply 11, the DC power of a battery 13 is supplied in place of the output power of the receifier 12, and each load 171-173 can be supplied continuously with uninterrupted AC power. |
