Regulation of the Cell Bus Voltages of Large Scale Modular Multilevel Converters: Advanced Energy Converters for Future Electricity Grids

大规模电力电子转换器是新兴的“智能电网”配电网络的关键，它使用大量的级联单元在直接并网所需的非常高的电压下运行。目前，驱动电池直流链电压波动的基本因素，特别是物理电池切换过程引起的复杂的非线性相互作用，人们还知之甚少。该项目将使用一种新的谐波分析策略来研究支撑这种电压波动现象的基本工程科学，以实现对大规模级联变流器基本操作过程的理解的量化步骤。

Large scale power electronic converters are essential to the emerging “Smart Grid” electrical distribution networks, using large numbers of cascaded cells to operate at the very high voltages that are required for direct grid connection. At present, the fundamental factors that drive the fluctuations of the cell DC link voltages, including in particular the complex non-linear interactions caused by the physical cell switching processes, are very poorly understood. This project will use a new harmonic analysis strategy to investigate the basic engineering science that underpins this voltage fluctuation phenomena, to achieve a quantum step in the understanding of the fundamental operating processes of large scale cascaded converters.