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并网逆变器的逆奈奎斯特稳定性判据

Inverse Nyquist Stability Criterion for Grid-Tied Inverters

语言:

中文摘要

本文基于诺顿等效电路提出了一种新的阻抗基并网逆变器稳定性判据,并证明了戴维南等效电路可推导出相同结论。此外,文章验证了Middlebrook判据在逆变器系统中的适用性,为解决并网系统稳定性分析提供了理论支撑。

English Abstract

A new impedance-based stability criterion was proposed for a grid-tied inverter system based on a Norton equivalent circuit of the inverter [18]. As an extension of the work in [18], this paper shows that using a Thévenin representation of the inverter can lead to the same criterion in [18]. Further, this paper shows that the criterion proposed by Middlebrook can still be used for the inverter sys...
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SunView 深度解读

该研究直接关系到阳光电源核心产品(组串式/集中式光伏逆变器及PowerTitan/PowerStack储能变流器)在复杂电网环境下的稳定性。随着全球电网弱网化趋势加剧,基于阻抗的稳定性分析是确保产品并网兼容性的关键。建议研发团队将此判据集成至iSolarCloud仿真模型中,用于评估逆变器在不同电网阻抗下的谐振风险,特别是在高比例可再生能源接入场景下,优化控制算法以提升系统的鲁棒性,从而降低现场谐振故障率,提升产品在弱电网环境下的竞争力。