Y. Weens,∗ N. Idir,∗ J.J. Franchaud,∗ and R. Bausi`re∗ e
Energy cable, high-frequency models, converter–machine interaction, EMI, transient overvoltages, conducted emissions
In adjustable speed drive applications operating at high switching frequencies, common mode and differential mode perturbations may cause premature ageing of electric machines and important electromagnetic radiations. These disturbances are generated by the power electronic converter, but can be amplified by the connection between the converter and the electric machine. This connection is ensured by multi-wire energy cables, shielded or unshielded. Whereas it is easy to find models allowing to simulate the HF behaviour of cables intended to transmit information, the HF models of the cables intended to carry electric power are still to be built. This paper deals with HF modelling of an unshielded 2-wire energy cable, which is a first step to multi-wire cable models. A model with distributed constants is proposed and validated in both time and frequency domains, first in a voltage pulse mode and loaded by a pure resistive load, then in an experimental set-up where the cable ensures the connection between an elementary power electronic converter and a load with inductive couplings and stray capacitors.
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