A Novel SVPWM Strategy for Three-Level NPC Inverter
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Based on the particular disposition of all the redundant voltage vectors,a novel SVPWM strategy called semi-bipolar PWM pattern for the three-level neutral-point-clamped voltage source inverter is proposed.The new modulation approach shows superior performance for the harmonic voltage and the control of neutral-point potential compared to the popular eight-stage centered SVPWM pattern.The feasibility of the proposed control approach has been verified via experiment results.