Parallel Operation Method of Single Phase UPS Module Considering Battery State of Charg

배터리 잔존용량을 고려한 단상 UPS 모듈의 병렬 운전 기법

This paper proposes parallel operation method of single phase UPS module considering the battery SOC. A master module performs output voltage control and current sharing algorithm considering battery SOC of each UPS modules. The slave modules control output current by current reference from master module. The applied parallel operation method is verified by the PSIM simulation.