论文标题
一个新的基于虚拟振荡器的网格形成控制器，对单个阶段的控制脱钩，并提高了不平衡的故障骑行的性能
A New Virtual Oscillator based Grid-forming Controller with Decoupled Control Over Individual Phases and Improved Performance of Unbalanced Fault Ride-through
论文作者
论文摘要
虚拟振荡器（VO）控件是用于网格形成和网格支持逆变器的最新且有前途的控制技术。 VO控制器（VOC）提供与连接的电网络的时间域同步。同时，VOC可以结合其他嵌套控制循环，以满足系统级别的要求，例如故障乘车功能。但是，现有的VOC有两个限制。首先，现有的VOC没有对单个阶段的控制。结果，在存在不平衡的网格电压的情况下，现有VOC的性能并不令人满意。其次，在不平衡故障下，现有VOC的故障乘车性能并不令人满意。在健康阶段的功率操作受到故障阶段的严重影响。本文引入了基于修改的基于VO的系统级网格形成控制器，以克服上述局限性。提出了使用分析推理的拟议控制体系结构的系统开发。进行仿真研究和硬件实验以进行验证。
Virtual Oscillator (VO) control is the latest and promising control technique for grid-forming and grid-supporting inverters. VO Controllers (VOCs) provide time-domain synchronization with a connected electrical network. At the same time, a VOC can incorporate additional nested control loops to meet the system-level requirements such as fault ride-through capability. However, existing VOCs have two limitations. Firstly, the existing VOCs do not have decoupled control over individual phases. As a result, the performance of the existing VOCs is not satisfactory in presence of unbalanced grid voltages. Secondly, the fault ride-through performance of the existing VOCs under unbalanced faults is not satisfactory. The power operation at a healthy phase is badly affected by a faulty phase. This paper has introduced a modified VO based system-level grid-forming controller to overcome the limitations mentioned above. Systematic development of the proposed control architecture with analytical reasoning is presented. Simulation studies and hardware experiments are conducted for validation.
