The active NPC converter and its loss-balancing control

被引:555
作者
Brückner, T
Bernet, S
Güldner, H
机构
[1] Tech Univ Berlin, Inst Energy & Automat, D-10587 Berlin, Germany
[2] Tech Univ Dresden, Elect Power Engn Inst, D-01062 Dresden, Germany
关键词
medium voltage; power losses; three-level converter; voltage-source converter (VSC);
D O I
10.1109/TIE.2005.847586
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The three-level neutral-point-clamped voltage-source converter (NPC VSC) is widely used in high-power medium-voltage applications. The unequal loss distribution among the semiconductors is one major disadvantage of this popular topology. This paper studies the loss distribution problem of the NPC VSC and proposes the active NPC VSC to overcome this drawback. The switch states and commutations of the converter are analyzed. A loss-balancing scheme is introduced, enabling a substantially increased output power and an improved performance at zero speed, compared to the conventional NPC VSC.
引用
收藏
页码:855 / 868
页数:14
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