Optimal voltage-balancing compensator in the modulation of a neutral-point-clamped converter

被引：8
作者：
Zaragoza, Jordi [1 ]
Pou, Josep [1 ]
Ceballos, Salvador [2 ]
Robles, Eider [2 ]
Jaen, Carles [1 ]
机构：
[1] Tech Univ Catalonia, Dept Elect Engn, Catalonia, Spain
[2] Technologie Corp, ROBOTIKER TECNALIA, Basque Country, Spain
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, PROCEEDINGS, VOLS 1-8 | 2007年
关键词：
carrier-based modulation; neutral-point-clamp converter; optimal compensator; three-level converter; voltage balance;
D O I：
10.1109/ISIE.2007.4374685
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents an optimal voltage-balancing compensator for a particular type of modulation technique applied to the neutral-point-clamped converter. This modulation technique is able to completely eliminate low-frequency voltage oscillations in the neutral point However, its dynamic for balancing voltages on the de-link capacitors is slow. The proposed compensator generates an optimal offset for the modulation signals that improves significantly the voltage balancing issue for any operation condition of the converter. Furthermore, this strategy does not increase switching frequencies of the devices. The algorithm is tested and verified by simulation and experiment.
引用
收藏
页码：719 / +
页数：2
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