TY - GEN
T1 - A novel neutral point voltage automatic balancing carrier-based modulation strategy of three-level NPC converter
AU - Li, Ning
AU - Wang, Yue
AU - Niu, Ruigen
AU - Guo, Wei
AU - Lei, Wanjun
AU - Wang, Zhao'An
PY - 2014
Y1 - 2014
N2 - A novel carrier-based modulation strategy of NPC three-level converter which achieves neutral point voltage balance under the whole modulation index and power factor is proposed in this paper. It divides the traditional single modulation wave of each phase in SPWM strategy into two modulation waves, which are compared respectively with the carrier to decide the output switch state of the converter. It analyzes the internal relations of the modulation waves between the new strategy and traditional SPWM strategy, and the 64 solutions of the modulation waves of the new strategy are deduced. On the basis of analysis and derivation, the new strategy is simple and easy to be implemented in digital system. Through the analysis of the DC voltage utilization ratio, the device switching losses and the output phase voltage THD characteristics, the new strategy has the disadvantage of larger switch losses and higher harmonic content. Finally, the analysis of this paper is verified by experiment.
AB - A novel carrier-based modulation strategy of NPC three-level converter which achieves neutral point voltage balance under the whole modulation index and power factor is proposed in this paper. It divides the traditional single modulation wave of each phase in SPWM strategy into two modulation waves, which are compared respectively with the carrier to decide the output switch state of the converter. It analyzes the internal relations of the modulation waves between the new strategy and traditional SPWM strategy, and the 64 solutions of the modulation waves of the new strategy are deduced. On the basis of analysis and derivation, the new strategy is simple and easy to be implemented in digital system. Through the analysis of the DC voltage utilization ratio, the device switching losses and the output phase voltage THD characteristics, the new strategy has the disadvantage of larger switch losses and higher harmonic content. Finally, the analysis of this paper is verified by experiment.
KW - 64 solutions of the modualtion waves
KW - NPC three-level converter
KW - carrier-based modulation strategy
KW - neutral point voltage balance
KW - whole modulation index and power factor
UR - https://www.scopus.com/pages/publications/84906684186
U2 - 10.1109/IPEC.2014.6869626
DO - 10.1109/IPEC.2014.6869626
M3 - 会议稿件
AN - SCOPUS:84906684186
SN - 9781479927050
T3 - 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
SP - 475
EP - 479
BT - 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
PB - IEEE Computer Society
T2 - 7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
Y2 - 18 May 2014 through 21 May 2014
ER -