VHDL-AMS based frequency domain model of four-wire shielded energy cable

This paper proposes a frequency domain methodology for power cable modelling that takes into consideration the cable parameters variation due to skin effect, proximity effect and dielectric losses. To deal with the propagation phenomena, which take place when the frequency increases distributed elements are proposed. A set of functions that fit the parameters measurement curves is used to build a VHDL-AMS based model for each element. The developed method reduces the number of nodes and introduces coupling coefficients between resistances, which is not allowed by PSPICE software. The model is simulated by means of ANSYS Simplorer in the frequency domain. Simulation results show a good agreement with measured ones in a large frequency range up to 100 MHz.