基于并联vsi的柔性单相微电网分层控制

Islam Ziouani, D. Boukhetala, A. Darcherif, B. Amghar, I. E. Abbassi
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引用次数: 6

摘要

本文提出了一种可并网或孤岛运行的柔性单相微电网控制策略。所采用的微电网由两个并联的电压源逆变器和两个局部非线性负载组成。这种方法基于一个由内部、初级和二级组成的层次结构。内部控制器调节VSI的输出电压。主要控制是基于最近文献中提出的通用下垂控制。次级控制补偿由主控制引起的频率和幅度偏差,并使微电网与电网同步,实现无缝过渡。最后,给出了仿真结果,证明了所提控制方案在孤岛模式和并网模式下的性能和灵活性,并保证了这些模式之间的平稳过渡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A hierarchical control for flexible single-phase microgrid based on parallel VSIs
This paper presents a control strategy for a flexible single-phase microgrid that can operate in grid-connected or in islanded mode. The microgrid adopted is composed of two voltage source inverters (VSIs) operated in parallel and two local nonlinear loads. This approach is based on a hierarchical structure which consists of inner, primary and secondary levels. The inner control regulates the output voltage of the VSI. The primary control based on the universal droop control which is recently proposed in the literature. The secondary control compensates the frequency and amplitude deviations caused by the primary control as well as synchronizes the microgrid to the grid for a seamless transition. Finally, simulation results are given, to show the performance and the flexibility of the proposed control scheme during islanded and grid-connected modes, with ensuring a smooth transition between these modes.
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