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This paper proposed a compensation strategy to reduce the 24n ± 1th harmonics existing in a traditional 24-pulse diode converter. Moreover, the strategy also overcomes the unequal-shared line currents of the two phase-shift transformers, which provide four set of three phase ac sources with 15° phase angles with respect to the adjacent sources. The 24-pulse converter used in this paper is parallel...
A new active interphase transformer (IPT) scheme to achieve three-phase line current balance for a 24-pulse converter is proposed in this paper. The proposed active IPT scheme consists of three IPT and a current-controlled inverter with required rating only 1.16% of system power rating. A current injection method for an active IPT is also proposed in this paper. The balance of three-phase current...
This paper proposes a new active interphase transformer for 24-pulse diode rectifier. The proposed scheme injects a compensation current into the secondary winding of either of the two first-stage interphase transformers. For only one of the first-stage interphase transformers being active, the inverter conducted the injecting current is with a lower kVA rating [1.26% pu (Po)] compared to conventional...
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