APPARATUS OF 3-PHASE UNINTERRUPTABLE POWER SUPPLIES HAVING OPTIMUM GAIN CONTROL MODULE IN CLOSED-LOOP

摘要

PURPOSE: A three-phase uninterruptable power supply having a closed-loop optimum gain control module is provided to rapidly cope with the variation of a resistive load. CONSTITUTION: An uninterruptable power supply module(100) comprises an AC voltage input part(101), an inverter part(110), a filter part(120), and a three-phase resistive load(130). The inverter part changes DC power output from a rectifier into the AC power. The filter part, comprising three inductors(L) and three capacitors(C), eliminates noise from the AC power inputted from the inverter part. A closed-loop optimum gain control module(200) implements optimum gain control through optimizing equation algorithm.