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Two-layer nonlinear control of DC–DC buck converters with meshed network topology
Automatica ( IF 6.4 ) Pub Date : 2023-06-07 , DOI: 10.1016/j.automatica.2023.111111
Pablo R. Baldivieso-Monasterios, Mahdieh S. Sadabadi, George C. Konstantopoulos

In this paper, we analyse a buck converter network containing arbitrary, up to mild regularity assumptions, loads. Our analysis begins with the primary controller where we propose a novel decentralised Lyapunov function for the interconnection between currents and a bounded integrator. We leverage on this result to study the network as a cascaded interconnection between voltages and bounded currents. We, in addition, propose a distributed optimal secondary control framework to steer voltages close to their nominal operating values. We employ the properties of the Laplacian kernel to show recursive feasibility and input-to-state stability of the closed loop. We demonstrate our results in a meshed topology network containing 6 power converters, each converter feeding an individual constant power load with values changing arbitrarily within a pre-specified range.



中文翻译:

具有网状网络拓扑的 DC-DC 降压转换器的双层非线性控制

在本文中,我们分析了一个降压转换器网络,其中包含任意负载,直至温和的规律性假设。我们的分析从主控制器开始,我们在其中提出了一种新颖的分散式 Lyapunov 函数,用于电流和有界积分器之间的互连。我们利用这个结果来研究网络作为电压和有界电流之间的级联互连。此外,我们还提出了一种分布式最优二次控制框架,以控制电压接近其标称工作值。我们利用拉普拉斯核的特性来展示闭环的递归可行性和输入到状态的稳定性。我们在包含 6 个电源转换器的网状拓扑网络中展示了我们的结果,

更新日期:2023-06-07
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