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Multi-level voltage sourced conversion by voltage reinjection at six times the fundamental frequency

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3 Author(s)
Y. H. Liu ; Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch, New Zealand ; J. Arrillaga ; N. R. Watson

The proposed multilevel voltage-sourced converter is based on the reinjection of DC voltage pulses at six times the fundamental frequency. The extra (reinjection) components required are justified by a substantial reduction in the capacitor size. It is shown that the resulting voltage and current harmonics are well within the present standards without the assistance of pulse-width modulation. Theoretical waveforms are verified by computer simulation using the PSCAD/EMTDC package

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IEE Proceedings - Electric Power Applications  (Volume:149 ,  Issue: 3 )