Inrush Current Limiter in 3-Phase Transformer Using AC Voltage Controller Simulation Using SIMULINK®

Usually electric power transmission and distribution are using alternating current (AC). One of many important tools that have been used for electric power distribution are Transformer. In transformer we also could find Inrush Current. Inrush Current is a very high current that comes when transformer on reenergized condition after from off condition. One of device that can be used for limiting this flux-based current are Inrush Current Limiter. Proposed Methods for this problem were using the help of AC Voltage control that it's firing angles can be used to control the transformer energizing. From this paper, the amount of inrush current reduction is 35.083% for 10% step voltage and 47.56% for 10° firing angle decrease. Also, the 10% step voltage can reach steady state faster than the other two methods. With this result of the inrush current reduction, the transformer energizing failure will not occur.