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基于单台逆变器端子特性的主从共享方案三相并联逆变器输出阻抗建模与稳定性预测

Output Impedance Modeling and Stability Prediction of Three-Phase Paralleled Inverters With Master–Slave Sharing Scheme Based on Terminal Characteristics of Individual Inverters

语言:

中文摘要

本文针对采用主从共享控制方案的三相并联逆变器系统,提出了一种输出阻抗建模方法及稳定性预测策略。该方法基于单台逆变器的端子特性,能够有效分析并联系统的输出阻抗,从而实现对整个系统并网稳定性的准确预测,为分布式交流电源系统的设计提供理论支撑。

English Abstract

Paralleled inverters are widely employed as the power source in the AC distributed power system, whose output impedance and stability status are required in the impedance-based stability analysis of the whole system. This paper presents an output impedance model as well as a stability prediction method for three-phase paralleled inverters with master-slave sharing scheme. While the output impedanc...
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SunView 深度解读

该研究对于阳光电源的组串式逆变器及大型集中式逆变器在多机并联场景下的稳定性设计具有重要指导意义。随着电网环境日益复杂,逆变器并联后的阻抗交互可能引发谐振或失稳。该建模方法可直接应用于阳光电源iSolarCloud平台的系统仿真与优化,特别是在大型地面光伏电站及微电网项目中,通过精确预测并联系统的稳定性,能有效指导控制参数的整定,提升系统在弱电网下的并网适应性,确保产品在复杂电网环境下的稳定运行。