Virtual Oscillator Control for Microgrids

针对可再生发电量增加的低惯性微电网，提出了一种基于耦合异质振荡器复杂网络同步出现的控制范式。其核心思想是控制电力电子逆变器以仿真非线性极限环振荡器的动态特性。振荡器(逆变器)通过现有的微电网电力网络耦合(连接)，并且在该系统中出现同步，没有来自公用事业电网的外部强迫，也没有任何超出现有物理电力网络内的自然相互作用的通信。由于新出现的现象支配着总体控制思想，所提出的范例具有弹性、健壮性、模块化，并且适用于具有可变可再生发电和不确定负荷的自组织微电网的即插即用实施。与该项目相关的数学、物理和电路理论方面的教育机会尤其令人兴奋，因为研究主题受到迷人的同步现象的启发，这些现象继续激发世界各地的工程师、物理学家、数学家和生物学家的创造力和集体想象力。该项目寻求电力电子逆变器控制方面的突破性进展，以实现具有更多可再生发电能力的低惯性微电网。基本的技术方法是基于控制和电路理论观点的紧急同步现象，这些现象是耦合的异质振荡器的复杂网络中固有的。所提出的研究重点包括相关的建模和分析挑战，以形式化设计方法，复杂、异质和动态电力网络中的相关同步问题，以及与满足负载和电源要求相关的实施问题。这些推力提供了两个目标，即推进耦合振荡器网络中的同步理论，同时利用理论成果为稳健、弹性和可持续的微电网建立先进的控制范例。

A control paradigm based on the emergence of synchronization in complex networks of coupled heterogeneous oscillators is proposed for low-inertia microgrids with increased renewable generation. The key idea pertains to controlling power electronic inverters to emulate the dynamics of nonlinear limit cycle oscillators. The oscillators (inverters) are coupled (connected) through the existing microgrid electrical network, and synchrony emerges in this system with no external forcing such as from a utility grid nor any communication beyond the natural interactions within the existing physical electrical network. Since an emergent phenomenon governs the overarching control philosophy, the proposed paradigm is resilient, robust, modular, and amenable to a plug-and-play implementation in ad-hoc microgrids with variable renewable generation and uncertain loads. The educational opportunities in mathematics, physics, and circuit theory associated with the project are particularly exciting, since research themes are inspired by fascinating synchronization phenomena that continue to captivate the creative and collective imaginations of engineers, physicists, mathematicians, and biologists worldwide.The project seeks groundbreaking advances in the control of power electronics inverters to enable low-inertia microgrids with increased renewable generation. The underlying technical approach is based on a control- and circuit-theoretic viewpoint of emergent synchronization phenomena that are inherent in complex networks of coupled heterogeneous oscillators. The proposed research thrusts span the relevant modeling and analysis challenges to formalize the design approach, pertinent synchronization problems in complex, heterogeneous, and dynamic electrical networks, and implementation issues relating to satisfying load and source requirements. These thrusts afford the twin objectives of advancing the theory of synchronization in networks of coupled oscillators, while leveraging theoretic findings in establishing advanced control paradigms for robust, resilient and sustainable microgrids.