基于分选算法的模块化多电平变换器浮动电容电压平衡调制技术

Micael P. de Lucena, C. Gehrke, I. R. F. M. P. da Silva
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引用次数: 0

摘要

模块化多电平级联变换器(MMCC)已成为中高压应用的一个很好的解决方案。本文提出了一种改进的最接近电平控制方法,旨在降低子模块电压误差,减少计算量。为了验证该技术的可行性,将结果与相移载波技术进行了比较。从所提出的解决方案中,除了在浮动电容器的电压平衡和输出电压的波形质量方面表现出更好的效果外,还可以实现与某些应用类似的$m+1$电压电平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sorting-algorithm-based Modulation Technique For Voltage Balancing the Floating Capacitors of Modular Multilevel Converters
The modular multilevel cascade converter (MMCC) has been emerging as a good solution for medium to high-voltage applications. This paper proposes a modified nearest level control for the MMCCs, aiming at a lower error in the voltages of the submodules and a reduction in the computational effort. To check the feasibility of the proposed technique, a comparison of the results was carried out with the phase-shifted carrier technique. From the proposed solution, $m+1$ voltage levels can been achieved, similar as some applications, besides presenting better results in the voltage balancing of the floating capacitors and the waveform quality of output voltages.
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