Reduction of inrush current using point on wave switching in power transformers

This paper presents a novel approach to mitigate the inrush current by using Point On Wave (POW) switching technique. The proposed technique is used to limit the inrush current while energizing the transformer. An algorithm is developed using EMTP/PSCAD software and the prototype with the proposed algorithm is built in the laboratory. It is tested by using DSP TMS320F28069 controller. The simulation and hardware results are presented to validate the capability of the proposed system.