论文标题
用于网格形成电压源逆变器的强大和最佳单环电压控制器
Robust and Optimal Single-loop Voltage Controller for Grid-forming Voltage Source Inverters
论文作者
论文摘要
为单相网格形成电压源逆变器（VSI）提出了最佳且健壮的单环控制器的设计和实现。提议的控制器的目的是具有良好的参考跟踪和干扰拒绝。负载的不确定性质可以显着改变系统的行为，尤其是在重载的条件下，并在动态模型中施加不确定性。这会严重恶化控制器的鲁棒性。本文提出了基于h-侵蚀的控制器设计，以解决此问题。最佳控制器的所需目标是在将负载作为控制系统的不确定元素建模后制定的。基于时间域MATLAB/基于Simulink的模拟研究证实了这样的事实，即所得的控制器在变化的负载过程中表现出优异的鲁棒性，VSI的条件比常规多环控制体系结构表现出优异的VSI条件。
Design and implementation of an optimal and robust single-loop voltage controller is proposed for single-phase grid forming voltage source inverter (VSI). The objective of the proposed controller is to have good reference tracking and disturbance rejection. Uncertain nature of loads can significantly alter system's behavior, especially during heavily loaded conditions, and impose an uncertainty in the dynamic model. This deteriorates the robustness of the controller severely. H-Infinity-based controller design is proposed in this article to address this issue. The required objectives of the optimal controller are formulated after modeling the loads as uncertain element of the control system. Time-domain MATLAB/SIMULINK-based simulation study substantiates the fact that the resulting controller exhibits superior robustness in performance during varying loading, conditions of VSI than that of the conventional multi-loop control architecture.
