Low harmonic multipulse voltage converters using coupled reactors

This paper presents a novel approach to the multi pulse voltage converters (VC), especially voltage source inverters (VSI) and matrix converters (MC) based on several typical identical modules connected in parallel using coupled reactors. Such arrangements resulting in lower voltage distortions at extremely low switching frequency. The proposed arrangement was validated by simulation. Laboratory models of 18- and 24-pulse 3-level VSI arrangements were also investigated experimentally. Results of simulation and laboratory tests of experimental models are presented in the paper.

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