电力系统自动化Issue(8)：84-90,7.DOI:10.7500/AEPS20130625010
具有飞跨电容辅助桥臂的三电平中点钳位逆变器方案
A Three-level Neutral-point-clamped Inverter with Flying-capacitor Auxiliary Legs
摘要
Abstract
A three-level flying-capacitor(four-leg)neutral-point-clamped(3L-FC-NPC)inverter is proposed for a large offshore wind power conversion system with light high voltage direct current(HVDC)transmission.The fourth flying-capacitor(FC) leg is added to eliminate mid-point voltage imbalance of the DC link including DC drift and low-frequency voltage fluctuation. The principle of the added FC leg is discussed first.Then three different voltage closed-loop control methods are proposed and compared.Finally,simulation and experiment show the correctness of modeling and analysis.关键词
永磁同步发电机/轻型高压直流/飞跨电容辅助桥臂/三电平中点钳位逆变器/中点平衡控制Key words
permanent magnet synchrony generator(PMSG)/light HVDC/flying-capacitor auxiliary leg/three-level neutral-point-clamped(3L-NPC)inverter/neutral-point balance control引用本文复制引用
曾翔君,张晓,杨永兵,陈发,杨旭..具有飞跨电容辅助桥臂的三电平中点钳位逆变器方案[J].电力系统自动化,2014,(8):84-90,7.基金项目
国家自然科学基金资助项目(51007073)。@@@@This work is supported by National Natural Science Foundation of China(No.51007073) （51007073）
