Virtual Oscillator Control for Microgrids

微电网的虚拟振荡器控制

• 批准号: 1509277
• 负责人: Sairaj Dhople
• 金额: $ 31.48万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1509277&HistoricalAwards=false
• 关键词: Virtual; Oscillator; Control; Microgrids

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.

针对可再生能源发电量增加的低惯性微电网，提出了一种基于耦合异构振荡器复杂网络中同步出现的控制范例。关键思想涉及控制电力电子逆变器以模拟非线性极限环振荡器的动态。振荡器（逆变器）通过现有的微电网进行耦合（连接），并且在该系统中出现同步，没有来自公用电网的外部强制，也没有超出现有物理电网内自然交互的任何通信。由于新兴现象支配着总体控制理念，因此所提出的范例是有弹性的、稳健的、模块化的，并且适合在具有可变可再生发电和不确定负载的特设微电网中即插即用实施。与该项目相关的数学、物理和电路理论的教育机会特别令人兴奋，因为研究主题受到迷人的同步现象的启发，这些现象继续吸引着全世界工程师、物理学家、数学家和生物学家的创造性和集体想象力。该项目寻求电力电子逆变器控制方面的突破性进展，以实现低惯量微电网并增加可再生能源发电。基本技术方法基于耦合异质振荡器的复杂网络中固有的突发同步现象的控制和电路理论观点。所提出的研究重点涵盖了将设计方法形式化的相关建模和分析挑战、复杂、异构和动态电气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。这些推动力提供了两个目标，即推进耦合振荡器网络中的同步理论，同时利用理论发现建立先进的控制范例，以实现稳健、有弹性和可持续的微电网。