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Tuning of control loops for grid-connected Modular Multilevel Converters under a simplified port representation for large system studies

机译：用于大型系统研究的简化端口表示下的并网模块化多电平转换器的控制环调整

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One of the present barriers to the widespread use of Modular Multilevel Converters (MMC) is the complexity of its control with respect to its predecessors. This paper presents a simple procedure to tune the current and energy control loops of the MMC, based on standard PI controllers and resembles control tuning approaches commonly used for 2-Level Voltage Source Converters (2L-VSC). The control design is based on a recently proposed simplified model of the MMC which is able to accurately represent the interface variables dynamics on the ac- and dc-side, which are considered as the main variables of concern from a macroscopic point of view. Furthermore, the tuning methodology guarantees the stable behaviour and correct tracking of the states. The paper presents simulation results of a typical case under the proposed tuning procedure.
机译：模块化多级转换器（MMC）广泛使用的本障碍之一是其对其前辈的控制的复杂性。本文提出了一种简单的过程，可以根据标准PI控制器调整MMC的电流和能量控制循环，并类似于用于2级电压源转换器（2L-VSC）的控制调整方法。控制设计基于最近提出的MMC的简化模型，其能够精确地表示AC和DC侧的接口变量动态，其被认为是来自宏观的观点的关注的主要变量。此外，调整方法可确保状态的稳定行为和正确跟踪。本文提出了在建议的调谐过程下典型案例的仿真结果。

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