TY - JOUR AU - 권병일 DA - 2017/09 PY - 2017 UR - https://www.jstage.jst.go.jp/article/elex/14/20/14_14.20170815/_article/-char/ja/ UR - https://repository.hanyang.ac.kr/handle/20.500.11754/103576 AB - A number of critical load applications depend on a UPS system to uphold the normal operation. As soon as any disruption happens on the utility, an off-line UPS system starts supplying the power to the load to prevent blackout. Nonetheless, during this process, a substantial inrush current can be observed for the transformer-coupled loads. To avoid this inrush current, we propose an off-line UPS system based on a current regulated voltage source inverter. The inverter of the proposed UPS system uses a current control scheme executed in a stationary frame to regulate the load current and eliminates the likelihood of the inrush current. To endorse the performance of the proposed UPS system, we constructed a small prototype to obtain the experimental results. PB - IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG KW - current controlled inverter KW - inrush current KW - off-line UPS KW - transformer-coupled loads TI - A three-phase off-line UPS system for transformer coupled loads IS - 20 VL - 14 DO - 10.1587/elex.14.20170815 T2 - IEICE ELECTRONICS EXPRESS ER -