Analysis of the Power Balance in the Cells of a Multilevel Cascaded H-Bridge Converter
Analysis of the Power Balance in the Cells of a Multilevel Cascaded H-Bridge Converter
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DOI：
10.1109/tie.2009.2034679
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发表时间：
2010-07
影响因子：
7.7
通讯作者：
S. Vazquez;J. Galván;Juan Manuel Carrasco Solís;L. Franquelo;E. Galván;M. Reyes;J. Sanchez;E. Dominguez
中科院分区：
文献类型：
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作者：
S. Vazquez;J. Galván;Juan Manuel Carrasco Solís;L. Franquelo;E. Galván;M. Reyes;J. Sanchez;E. Dominguez
多电平级联H桥（CHB）变换器是大功率场合的一种很好的解决方案。以这种方式，已经提出了几种控制和调制技术，这种功率转换器拓扑结构。本文研究了单相双室混合式断路器（CHB）各单元稳态功率平衡问题。根据直流链路电压和所需的交流输出电压值，分析了每个单元从电网获得有功功率或向电网输送有功功率的能力。的CHB的稳定操作的最大和最小输入有功功率的限制得到解决。仿真结果验证了所提出的分析。
Multilevel cascaded H-bridge (CHB) converters have been presented as a good solution for high-power applications. In this way, several control and modulation techniques have been proposed for this power converter topology. In this paper, the steady-state power balance in the cells of a single-phase two-cell CHB is studied. The capability to be supplied with active power from the grid or to deliver active power to the grid in each cell is analyzed according to the dc-link voltages and the desired ac output voltage value. The limits of the maximum and minimum input active powers for a stable operation of the CHB are addressed. Simulation results are shown to validate the presented analysis.