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A new active interphase reactor for 12-pulse rectifiers provides clean power utility interface

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4 Author(s)
Sewan Choi ; Samsung Electro.-Mechanics Co. Ltd., Kyungki, South Korea ; P. N. Enjeti ; Hoag-Hee Lee ; I. J. Pitel

In this paper, a new active interphase reactor for twelve-pulse diode rectifiers is proposed. The proposed system draws near sinusoidal currents from the utility. In this scheme, a low kVA [0.02 Po (PU)] active current source injects a triangular current into an interphase reactor of a twelve-pulse diode rectifier. This modification results in near sinusoidal utility line currents with less than 1% THD. It is further shown that a low kVA, 12-pulse system with an autotransformer arrangement [kVA rating of 0.18 Po (PU)] can be implemented with the proposed active interphase reactor. The resulting system draws clean power from the utility and is suitable for powering larger kVA AC motor drive systems. Detailed analysis of the proposed scheme along with design equations is illustrated. Simulation results verify the concept. Experimental results are provided from a 208 V, 10 kVA rectifier system

Published in:

IEEE Transactions on Industry Applications  (Volume:32 ,  Issue: 6 )