HVDC performance analysis according to ER-filter and single tuned filter

This paper deals with the novel HVDC filter topology. The proposed method is the combination the active filter with ER-filter (energy recovery-filter). The active filter of the proposed method is a kind of hybrid filter, consists of the passive filter and the voltage source. Also, the single tuned active filter to eliminate 11/sup th//13/sup th/ harmonics is proposed. This proposed active filter is very useful to reduce the cost of the active filter. ER-filter is to return the filter power to AC network, used to replace with the damped filter. Consequently, PSCAD/EMTDC is used to investigate the validation of the proposed topology.