TY - JOUR N2 - The unbalance of the neutral point voltage is an inherent problem of three-level neutral-point-clamped (NPC) inverter, the effect of neutral point voltage balancing which is caused by voltage vector is analyzed, and the relationship of the voltage offset and neutral point voltage is studied in this paper. This paper proposes a novel neutral point balance strategy for three-level NPC inverter based on space vector pulse width modulation (SVPWM). A voltage offset is added to the modulation wave, and a closed-loop neutral point voltage balance control system is designed. In the control system, the dwelling time of synthesis voltage vectors for SVPWM is varied to solve the problem of the unbalance of the neutral point voltage, the sequence of the voltage vectors maintains unchanging. Simulation and experimental results show the neutral point voltage balancing control strategy based on SVPWM is effective. L1 - http://journals.pan.pl/Content/84737/PDF/02_paper.pdf L2 - http://journals.pan.pl/Content/84737 PY - 2013 IS - No 1 March EP - 23 DO - 10.2478/aee-2013-0002 KW - space vector KW - neutral point voltage KW - voltage offset KW - PWM A1 - Bo Gong A1 - Shanmei Cheng A1 - Yi Qin PB - Polish Academy of Sciences VL - vol. 62 DA - 2013 T1 - Simple three-level neutral point voltage balance control strategy based on SVPWM SP - 15 UR - http://journals.pan.pl/dlibra/publication/edition/84737 T2 - Archives of Electrical Engineering ER -