Independent Load Sharing of UPS systems connected in Parallel

병렬운전 UPS 시스템의 독립 부하 분담 특성

This paper describes characteristics of independent load sharing of parallel UPS systems and proposes a method of control which does not require control interconnections at each UPS system and compensates for line impedance. Simulation results of a two-module UPS system with different power latins and line impedance have demonstrated the feasibility of the proposed control scheme in load sharing.