TY JOUR TI MODELING OF ELECTROMAGNETIC FIELDS IN DC TRACTION NETWORKS KW DC traction power supply systems KW electromagnetic fields JO Modern Technologies and Scientific and Technological Progress AU Kryukov, A.V. AU Nguyen, Q.H. AU Chan, Z.H. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»