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arXiv 2511.02438eess.SYcs.SY
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基于控制屏障函数的交流微电网中恒功率负载的去中心化电压控制

Decentralized Voltage Control of AC Microgrids with Constant Power Loads using Control Barrier Functions

University of Patras(帕特雷大学)

Grigoris Michos, George C. Konstantopoulos

AI总结:

本文提出基于控制屏障函数的非线性去中心化电压控制器,用于调节高渗透时间变化恒功率负载的交流微电网,通过级联结构确保状态轨迹有界并收敛至期望电压。

摘要:

本文提出了一种新型非线性去中心化电压控制器,用于调节具有高渗透时间变化恒功率负载的互联交流微电网网络。将负载需求建模为持续演变的未知扰动,网络模型被改写为由名义和误差子系统组成的级联结构。通过采用适当的控制屏障函数,我们制定了一种连续时间控制律,并推导出关于调节参数的分析条件,以确保真实状态轨迹与名义状态轨迹之间的距离被限制。在充分条件下,证明了级联动态相对于平衡集的渐近稳定性,并提供了吸引区的估计。此外,严格证明所提出的非线性控制律能够在不需饱和装置的情况下,对额定电压值进行约束调节。闭环系统的操作通过仿真和实时硬件在环(HIL)场景进行了说明,展示了有界操作和收敛到期望参考向量的邻域。

英文摘要:

This paper proposes a novel nonlinear decentralized voltage controller for constrained regulation of meshed AC Microgrid networks with high penetration of time-varying constant power loads. Modelling the load demand as a constantly evolving unknown disturbance, the network model is reformulated in a cascaded structure composed of a nominal, \ie uncertainty-free, and an error subsystem. By adopting a suitable control barrier function, we formulate a continuous-time control law and derive analytic conditions on the tuning parameters, such that the distance between the true and the nominal state trajectories is bounded. Under sufficient conditions, we prove asymptotic stability of the cascaded dynamics with respect to an equilibrium set and also provide an estimate of the region of attraction. In addition, it is rigorously shown that the proposed nonlinear control law enforces constrained regulation around a rated voltage value, without the need of saturation devices. The operation of the closed-loop system is illustrated both via simulation and real-time HIL scenarios, demonstrating bounded operation and convergence to a neighbourhood of the desired reference vector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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