In order to supply the single-phase locomotive load and mitigate the negative sequence current. this paper develops a V/V transformer-based connection and control strategy of three-phase photovoltaic (PV) converters integrated into railway traction power supply systems. In this V/V transformer-based connection. the two-phase traction voltage is converted into the three-phase voltage. https://www.wingdress.com/product-category/gadgets/