Self power equipment on battery for initial starting of 13.2kV SST(Solid State Transformer)

13.2kV급 반도체 변압기의 초기 기동을 위한 배터리 기반 셀프 전원 장치

This paper is presents a initial starting of SST with high voltage level source. Rush current flowing as difference between capacitor level and grid level can crush the whole system. Thus, industries have used initial constituted by resistance and relay. However the initial circuit used in industries can't apply high voltage application due to isolation and economic feasible problems. Therefore many countries study method can charge capacitor with another voltage sources. Also this paper introduce method charging primary side capacitor efficiently.