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Application of the multi-level current reinjection concept to HVDC transmission

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4 Author(s)
Liu, Y.H. ; Inf. Eng. Sch., Inner Mongolia Univ. of Technol., Hohhot ; Perera, L.B. ; Arrillaga, J. ; Watson, N.R.

The self-commutating multilevel current reinjection (MLCR) reduces the converter current waveform to zero during the valves commutations and, thus, removes the converter dependence on line commutation. This property provides the conventional thyristor converter with the same flexibility as the self-commutating multi-level schemes in terms of reactive power control and harmonic elimination. This paper describes the structure and control of a current source HVDC transmission scheme using MLCR converters. Extensive EMTDC simulation is carried out to demonstrate the improved controllability of the proposed HVDC configuration

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Generation, Transmission & Distribution, IET  (Volume:1 ,  Issue: 3 )