Applied Sciences, Volume 14, Issue 15
2024 August-1 - 462 articles
Cover Story: Given the increased use of high-voltage DC (HVDC) systems and the conversion of AC into DC using power electronics with faster switching times, the issue of electromagnetic interference (EMI) is receiving more attention. A finite-difference time-domain method is used to study the properties of single switching events using a realistic model of an HVDC converter station, with a special emphasis on determining the impact of the valve hall on shielding EMI. It is shown that the valve hall does not confine high-frequency electromagnetic fields to the valve hall; rather, it delays them from exiting through bushings in the wall and spreads them out in time. Furthermore, it is shown that incorporating electromagnetic absorbing material into the valve hall’s design can significantly reduce EMI outside the converter station. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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