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首页> 外文期刊>IEEE transactions on industrial informatics >A Robust Droop-Based Autonomous Controller for Decentralized Power Sharing in DC Microgrid Considering Large-Signal Stability
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A Robust Droop-Based Autonomous Controller for Decentralized Power Sharing in DC Microgrid Considering Large-Signal Stability

机译：考虑大信号稳定性的DC微普林中分散功率共享的基于强大的下垂的自主控制器

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The high penetration of power electronic converter loads in dc microgrid causes system stability issue, or also known as constant power load issue, due to their negative impedance characteristics. The stability concern will be more complicated for a self-disciplined microgrid that allows plug and play of various distributed generations (DGs). This article proposes a robust droop-based controller for decentralized power sharing in a dc microgrid considering large-signal stability. For each DG interface converter subsystem, the interactions with other DG interface converters and loads are estimated by a nonlinear disturbance observer (NDO) utilizing the subsystem's own information to achieve decentralized power sharing and fast voltage regulation. With the uncertainties of circuit parameters modeled as a lumped disturbance term and compensated by an NDO, the proposed controller can significantly enhance the robustness against the uncertainties of circuit parameters. The large-signal stability of the whole interconnected system is proved by the backstepping algorithm and Lyapunov theorem. The efficacy and large-signal stability of the proposed approach are verified by both simulations and experiments.
机译：由于它们的负阻抗特性，电力电子转换器负载的高渗透性导致系统稳定性问题，或者也称为恒定功率负载问题。对于自律统治的微电网，稳定性问题将更加复杂，允许即插即用各种分布代（DGS）。本文提出了一种考虑大信号稳定性的DC微普林机中的基于稳健的下垂功率共享的控制器。对于每个DG接口转换器子系统，与其他DG接口转换器和负载的交互由利用子系统自己的信息来实现分散的电力共享和快速电压调节的非线性干扰观察者（NDO）估计。随着作为集总干扰术语建模的电路参数的不确定性，所提出的控制器可以显着提高对电路参数不确定性的鲁棒性。通过BackStepping算法和Lyapunov定理证明了整个互连系统的大信号稳定性。通过模拟和实验验证所提出方法的功效和大信号稳定性。

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