Investigation of Transfer Impedance of EV/HV Power Cables

Author: Giorgi Maghlakelidze
Keywords: Transfer Impedance, Fourier Series, electrical vehicle, shielded power cables, crosstalk, field scattering
Annotation:

While development of electrical and hybrid vehicles is becoming more and more important nowadays, computer simulation of their components also gains much importance. Correct computer models allow for cost-effective and fast design of electrical systems and in-depth study of their properties. In this work, a new method of computational modeling of radiation from shielded power cables in such vehicles is introduced and explored. Proposed semi-analytical solution is based on Methods of Moments as described by R. Harrington in “Field Computation by Moment Methods”. Key feature of new method is using Fourier series in order to represent currents induced on surfaces of wires and shields. This allows for dramatic reduction of unknowns and time for solution of system of linear equations. Current work consists of several parts: at first, several existing state-of-the-art methods are reviewed. Next, a new solution is introduced and derived in detail, covering method properties and optimization issues. Then, the proposed MoM-Fourier solution is validated: diffraction of incident EM waves on cylinders is compared to Method of Moments results, while calculation of Transfer Impedance of a shielded cable is validated against fundamental work of Schelkunoff describing estimation of transfer impedance for cylindrical shields with finite conductivity and thickness. Finally, conclusions are drawn, underlining advantages and drawbacks of proposed method; plans for future work and possible improvements are outlined.

Lecture files:

პრეზენტაცია: ელექტრული და ჰიბრიდული მანქანების ელექტროგადამცემი სადენების გადაცემის იმპედანსის გამოკვლევა [ka]
ნაშრომი: ელექტრული და ჰიბრიდული მანქანების ელექტროგადამცემი სადენების გადაცემის იმპედანსის გამოკვლევა [ka]