论文标题
具有直接状态控制的多变量网格形成转换器
Multivariable Grid-Forming Converters with Direct States Control
论文作者
论文摘要
已经提出了使用多变量反馈控制的多输入基于多输出的网格形成（MIMO-GFM）转换器，该反馈控制已被证明是使用低阶控制器的卓越和稳健的系统。但是，原始的MIMO-GFM控制很容易受到高频组件的影响，尤其是对于没有内部级联电压和电流环的转换器以及将其连接到强网格时。本文提出了一种改进的MIMO-GFM控制方法，其中选择了直接控制的频率和内部电压作为状态变量。这样，消除了高频组件的影响而不会增加控制系统的复杂性。 h-侵蚀的合成用于调整参数以获得优化的性能。实验结果验证了所提出的方法的有效性。
A multi-input multi-output based grid-forming (MIMO-GFM) converter has been proposed using multivariable feedback control, which has been proven as a superior and robust system using low-order controllers. However, the original MIMO-GFM control is easily affected by the high-frequency components especially for the converter without inner cascaded voltage and current loops and when it is connected into a strong grid. This paper proposes an improved MIMO-GFM control method, where the frequency and internal voltage are chosen as state variables to be controlled directly. In this way, the impact of high-frequency components is eliminated without increasing the complexity of the control system. The H-infinity synthesis is used to tune the parameters to obtain an optimized performance. Experimental results verify the effectiveness of the proposed method.
