A Novel SVPWM for Three-Level NPC Inverter Based on m-Mode Controllability.

A novel space vector pulse width modulation (SVPWM) strategy for three-phase four-wire neutral-point-clamped (NPC) inverter is proposed in this paper. The m-mode controllability of a three-phase four-wire NPC inverter, which is modeled as a switched linear system, is investigated. Then, on the basis of analysis of the m-mode controllability, taking the three-level property and the continuity of sw...