A novel rectifier based on a triple line-voltage cascaded VIENNA converter (LVC-VC)\nwas proposed. Compared to the conventional cascaded H-bridge converters, the switch voltage\nstress is lower, and the numbers of switches and dc capacitors are fewer under similar operating\nconditions in the proposed new multilevel converter. The modeling and control for the LVC-VC\nware presented. Based on the analysis of the operation principle of the new converter, the power\nfactor correction of the proposed converter was realized by employing a traditional one-cycle control\nstrategy. The minimum average value and maximum harmonic components of the dc-link voltages\nof the three VIENNA rectifier modules ware calculated. Three VIENNA dc-link voltages were\nunbalanced under the unbalanced load conditions, so the zero sequence current was injected to the\nthree inner currents for balancing three VIENNA dc-link voltages. Simulation and the results of the\nexperiment verified the availability of the new proposed multilevel converter and the effectiveness of\nthe corresponding control strategy applied.
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