| 弱电网下基于H∞控制的光伏并网逆变器研究与设计 |
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| 引用本文：康家玉,陈馨儿,白一锴.弱电网下基于H∞控制的光伏并网逆变器研究与设计[J].电网与清洁能源,2021,37(9):108~117 |
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| 基金项目:陕西省重点研发计划（2021-GY135） |
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| 中文摘要:针对光伏并网逆变系统受到弱电网中电网阻抗与谐波干扰而出现稳定性下降的问题，该文提出一种基于改进型H∞电流内环控制策略，在传统H∞控制中引入基于公共点电压的间接计算方法，保证系统在电网阻抗大范围波动时仍能正常工作，提高系统的抗干扰能力，实现良好电能质量并网。最后通过仿真与实验对传统以及改进的控制策略进行对比分析，验证了所提控制策略的有效性与优越性。 |
| 中文关键词:光伏发电 弱电网 H∞控制 逆变器 |
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| Research on and Design of Photovoltaic Grid-Connected Inverter Based on H∞ Control under Weak Current Network |
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| Abstract:For the problem that the stability of the photovoltaic grid connected inverter system is reduced due to the interference of grid impedance and harmonics in weak current grid， this paper proposes an improved H∞ current inner loop control strategy， and introduces the indirect calculation method of common point voltage into the traditional H∞ control， so as to ensure that the system can work normally when the grid impedance fluctuates in a large range and improve the anti-interference ability of the system and realize good power quality grid-connection. Finally， the effectiveness and superiority of the proposed control strategy are verified by comparing the traditional and improved control strategies through simulation and experiment. |
| keywords:photovoltaic power generation weak current network H∞ control inverter |
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