论文标题
基于指数载荷的直流微电网中基于共识的电流共享和电压平衡
Consensus-Based Current Sharing and Voltage Balancing in DC Microgrids with Exponential Loads
论文作者
论文摘要
在这项工作中，我们提出了一种基于共识的二级控制方案，用于DC微电网中的电流共享和电压平衡，该方案由分布式生成单元，动态RLC线和非线性ZIE（恒定阻抗，恒定电流和指数级）组成。我们的二级控制器位于主要电压控制层的顶部，具有分布式结构，并利用通过通信网络交换的信息来计算必要的控制操作。除了表明始终以稳定状态实现所需目标外，我们还针对恒定功率负载的平衡点的存在和唯一性提出了足够的条件 - E的指数为零。我们的控件设计仅取决于发电单元的本地参数，从而促进插件操作。我们提供了电压稳定性分析，并通过模拟说明了设计的性能和鲁棒性。所有结果均适用于任意，尽管是连接的，微电网和通信网络拓扑。
In this work, we present a novel consensus-based secondary control scheme for current sharing and voltage balancing in DC microgrids, composed of distributed generation units, dynamic RLC lines, and nonlinear ZIE (constant impedance, constant current, and exponential) loads. Situated atop a primary voltage control layer, our secondary controllers have a distributed structure, and utilize information exchanged over a communication network to compute necessary control actions. Besides showing that the desired objectives are always attained in steady state, we deduce sufficient conditions for the existence and uniqueness of an equilibrium point for constant power loads -- E loads with zero exponent. Our control design hinges only on the local parameters of the generation units, facilitating plug-and-play operations. We provide a voltage stability analysis, and illustrate the performance and robustness of our designs via simulations. All results hold for arbitrary, albeit connected, microgrid and communication network topologies.
