CAREER: A Multiphysics Framework for Modeling, Analysis, and Experimentation of Power Systems and Power Electronics

今天，电力系统被概念化为由无源元件、电力电子设备、旋转机械和各种规模的控制回路组成的错综复杂的系统。每个子系统通常都是用专门定制的方法以短视的方式进行研究的。在这个方案中，我们展示了如何将闭环系统的多物理能量系统统一在电路理论框架下，并通过电力电子仿真有效地进行原型设计。由于电力电子学及其闭环控制行为可以被建模为等效电路，因此得到了从换流器级(瓦)到系统级(兆瓦)有效地弥合电力电子和电力系统划分的模型。研究主题独特地定位在电路、控制和电源的交汇处，因此项目成果将解决可持续供电的未来系统设计中的根本挑战。拟议的技术自然会产生各种学习机会，其中复杂的系统及其控制可以被直接描述，一旦将其视为电路，它们的实际行为就会变得显而易见。因此，该框架将电气工程中的许多主题编成法典，以便学生可以在他们的教育经验中无缝地应用概念。该项目将开发允许研究现代系统中的能量动力学的建模和实验框架。基本的方法是基于首先表明众所周知的电路定律自然地嵌入到电力电子的控制反馈路径中。这允许将控制器的动态行为直接转换为转换器的等效电路表示；对于包含电力电子、传感器和机械的异类系统，进一步进行了扩展。出现了一个用于闭环系统和电子建模的综合框架，其中能量充当子系统模型之间的基本纽带。研究重点集中在：开发具有闭环网络控制的多物理系统的等效电路模型；为大量使用电子设备及其伴随的快速控制的复杂电力系统制定电路模型；以及概述一套用于仿真多物理电力系统和机电的实验方法。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Today, power systems are conceptualized as a convoluted tangle of passive components, power electronics, rotating machinery, and control loops at various scales. Each subsystem is typically studied in a myopic manner with specifically tailored methods. In this proposal, we show how closed-loop multiphysics energy systems can be unified under a circuit theoretic framework and prototyped effectively with power electronics emulation. Since power electronics and their closed-loop control action can be modeled as equivalent circuits, models are obtained that effectively bridge the power electronics and power systems divide, from the converter-level (Watts) to the system-level (Megawatts). Research themes are uniquely poised at the confluence of circuits, control, and power such that project outcomes will address fundamental challenges in the design of sustainably-powered future systems. The proposed techniques naturally yield a variety of learning opportunities where complex systems and their controls can be straightforwardly depicted and their actual behavior becomes obvious once seen as a circuit. Accordingly, this framework codifies numerous topics within electrical engineering so that students can seamlessly apply concepts across their educational experience.The project will develop modeling and experimentation frameworks that allow for the study of energy dynamics in modern systems. The underlying approach is based on first showing that well-known circuit laws are naturally embedded in control feedback paths for power electronics. This allows for a direct translation of controller dynamical behavior into equivalent circuit representations for converters; extensions are further made for heterogeneous systems containing power electronics, sensors, and machinery. What emerges is a comprehensive framework for closed-loop power systems and electronics modeling where energy acts as the fundamental link between subsystem models. Research thrusts focus on: developing equivalent circuit models for multiphysics systems with closed-loop cyber controls; formulating circuit models for complex power systems with massive utilization of electronics and their accompanying fast controls; and outlining a suite of experimental methodologies for emulation of multiphysics power systems and electromechanics.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.