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Optimal Switched Mode Control to Synthesize Dynamic Frequency Response from Virtual Synchronous Machine in Islanded Microgrid Operation

机译:优化开关模式控制,以孤岛微电网运行中虚拟同步机合成动态频率响应

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Islanded microgrids can experience severe frequency variation due to their inherently low inertia. Virtual inertia has been proposed in the literature to overcome this shortage. Virtual Synchronous Machine (VSM) concept has been the cornerstone of realizing virtual inertia from inverter connected energy sources. In this paper we propose and solve an optimal control problem to identify the optimal switching controls that achieve best dynamic frequency response from VSM. The results show that the optimal number of switching stages is independent of system parameters, and the optimal timing for switching between two control modes can be determined using local measurements alone, without having to perform complex computations.
机译:由于其固有的低惯性,岛屿微电网可以体验严重的频率变化。在文献中提出了虚拟惯性来克服这种短缺。虚拟同步机(VSM)概念一直是从逆变器连接的能源实现虚拟惯性的基石。在本文中,我们提出并解决了最佳的控制问题,以确定从VSM实现最佳动态频率响应的最佳交换控制。结果表明,最佳切换级的最佳数量与系统参数无关,并且可以单独使用本地测量确定两个控制模式之间切换的最佳定时,而无需执行复杂的计算。

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