logo WITPressTransactions on the Built Environment vol 7, © 1994 WIT Press, www.witpress.com, ISSN 1743-3509


Analysis and CAD of electric vehicle power electronic converters as a source of electromagnetic disturbances

W. Zająca & A. Szelągb

aDepartment of Electrical Engineering, Cracow University of Technology, 31-155 Cracow, Warszawska St 24, Poland

bInstitute of Electrical Machines, Warsaw University of Technology, 00-661 Warsaw, PL. Politechniki 1, Poland


The problem of disturbances caused by the converters of an electric traction vehicle is discussed in this paper. As there have been projects to introduce new types of rolling stock in a suburban railway line in Silesia (the south-western part of Poland), some introductory analyses have been done in order to estimate the electromagnetic disturbances which could be caused by the vehicles' converters. As a type of rolling stock, supplied by a 3 kV DC traction system , a multiple unit with a.c. motors and a voltage inverter have been taken into consideration. Specialized software for the simulation of the power electronic and electrical machines PC-NAP have been used. A complex model of the system has been worked out which includes: power utility system, DC traction substation 12-pulse rectifiers, traction contact line, vehicle input filters, power electronic converters and asynchronous traction motors. The parameters of the subsystems were calculated according to the measurements carried out by the authors or were taken as specified by manufacturers. The results of analyses and simulations are presented and discussed.


1. Białoń, Settlement of permissible level of disturbances caused by traction current in PKP track circuits, (in Polish), Railway Research Institute Work 392/20, Warsaw, 1984

2. Bose, B.K. Power electronics and AC drives. Prentice-Hall, New Jersey 1986

3. Coles, P.C, Fracchia, M., Hill, R.J., Pozzobon, P. & Szeląg A., Identification of catenary harmonic in 3 kV DC railway traction system. MELECON'94, Antalaya, Turkey 12-14 IV, 1994

4. Malisz,K., PrusakJ. & Zając,W. Measurements of unitary parameters of 3kV overhead catenary. International Conference Transsystem, Warsaw, 1989

5. Setting methods for protection of low-power circuits from electric traction disturbances on Silesian Regional Railway. Polish Ministry of High Education Grant CPBR 9.3-58000 990

6. Pieczarka, M. & Zając, W. Electric traction interfering on telecommunication lines; system parameters and effect in overhead catenary. Scientific Journal of Cracow University of Technology No 54, 1984

7. ORE Reports DT 73, Utrecht 1980

8. Taufiq ,J.A., Goodman ,C.J & Mellitt, B. Railway signalling compatibility of inverter fed induction motor drives for rapid transit. IEE Proc. B, Vol. 133, No2, March 1986, pp. 71-84


logo WITPressTransactions on the Built Environment vol 7, © 1994 WIT Press, www.witpress.com, ISSN 1743-3509