TY - GEN
T1 - Research on DC capacitor voltage self-balancing space vector modulation strategy of five-level NPC converter
AU - Wang, Yue
AU - Li, Ning
AU - Li, Su
AU - Cong, Wulong
AU - Lei, Wanjun
AU - Wang, Zhao'An
PY - 2014
Y1 - 2014
N2 - DC capacitor voltage balance is one of the key issues in the control of five-level NPC (neutral point clamped) converter. In this paper, it analyses the influence of space vectors to the DC voltage balance in five-level NPC converter SVM (space vector modulation) strategy and present a novel DC capacitor voltage self-balancing SVM strategy. The novel strategy divides the whole five-level space vector diagram into low modulation region (m SV≤0.5) and high modulation region (mSV>0.5). In low modulation region, DC capacitor voltage balance is achieved by combining objective function method with reference voltage decomposition method. In high modulation area, DC capacitor voltage balance is realized by applying an optimal balancing vector selection (OBVS) method. The characteristics of the novel strategy are smaller amount of calculation, much simpler realization and better control effect. Simulation and experimental results verify the correctness of the proposed method.
AB - DC capacitor voltage balance is one of the key issues in the control of five-level NPC (neutral point clamped) converter. In this paper, it analyses the influence of space vectors to the DC voltage balance in five-level NPC converter SVM (space vector modulation) strategy and present a novel DC capacitor voltage self-balancing SVM strategy. The novel strategy divides the whole five-level space vector diagram into low modulation region (m SV≤0.5) and high modulation region (mSV>0.5). In low modulation region, DC capacitor voltage balance is achieved by combining objective function method with reference voltage decomposition method. In high modulation area, DC capacitor voltage balance is realized by applying an optimal balancing vector selection (OBVS) method. The characteristics of the novel strategy are smaller amount of calculation, much simpler realization and better control effect. Simulation and experimental results verify the correctness of the proposed method.
UR - https://www.scopus.com/pages/publications/84900462109
U2 - 10.1109/APEC.2014.6803685
DO - 10.1109/APEC.2014.6803685
M3 - 会议稿件
AN - SCOPUS:84900462109
SN - 9781479923250
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2694
EP - 2699
BT - APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Y2 - 16 March 2014 through 20 March 2014
ER -