DYNAMIC VOLTAGE COMPENSATION SYSTEM FOR COMPENSATING INSTANT BLACKOUT ON MASSIVE LOAD

摘要

The present invention is to provide a momentary power failure compensating system for compensating momentary power failure against a massive load. The present invention relates to a momentary power failure compensating system for compensating momentary power failure against a massive load comprising a master momentary power failure compensating device and a slave momentary compensating device which is connected to the master momentary power failure compensating device in parallel. The master momentary power failure compensating device comprises: a master input voltage/current detecting circuit which is activated to be able to detect input voltage and current of an outside alternative power; a charging part which comprises a super capacitor charged and discharged by DC power; a master power converting part which converts the outside AC power into DC power to charge the charging part when the outside AC power is inputted and converts charging power of the charging part into AC power to output to a load when a voltage drop occurs in the outside AC power; and a master control part which controls the power converting part and the slave momentary compensating device in accordance with whether the outside AC power is inputted to supply massive AC power including master AC power and slave AC power to the massive load.