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一种基于环路增益的直流微电网母线阻抗在线估计与阻尼技术

A Loop Gain-Based Technique for Online Bus Impedance Estimation and Damping in DC Microgrids

语言:

中文摘要

在直流微电网中,多个电力电子变换器的互联可能引发交互作用,导致系统稳定性问题。本文提出一种基于环路增益的在线母线阻抗估计与阻尼控制技术,旨在无需额外硬件的情况下,通过实时监测与主动阻尼调节,提升多变换器互联系统的动态稳定性与性能。

English Abstract

In modern dc microgrids, several feedback-controlled power electronic converters are connected to the common dc bus. Although the control loops of each individual converter are designed with good stability margins, the interconnection of multiple source and load converters can cause stability and performance concerns, due to potential interactions. Therefore, in order to ensure the desired dynamic...
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SunView 深度解读

该技术对阳光电源的储能系统(如PowerTitan、PowerStack)及直流微电网解决方案具有重要意义。随着储能系统在复杂直流微电网中应用增多,多机并联导致的阻抗交互稳定性问题日益突出。该在线阻抗估计与阻尼技术可集成至PCS控制算法中,提升系统在弱电网或复杂直流环境下的鲁棒性。建议研发团队将其应用于构网型(GFM)储能变流器,通过主动阻尼策略替代传统的无源阻尼,在保证系统稳定性的同时,进一步优化功率密度与转换效率,增强阳光电源在微电网领域的竞争优势。