并网逆变系统的复合控制技术研究

刘述喜; 王强

doi:10.16513/j.cnki.10-1427/tk.2018.06.003

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分布式能源 ›› 2018, Vol. 3 ›› Issue (6) : 20-24. DOI: 10.16513/j.cnki.10-1427/tk.2018.06.003

有源配电网运行分析与控制

并网逆变系统的复合控制技术研究

刘述喜 ¹^,² ,
王强 ¹^,²

作者信息 +

Compound Control Technology of Grid-Connected Inverter System

Shuxi LIU ¹^,² ,
Qiang WANG ¹^,²

Author information +

文章历史 +

摘要

LCL型并网逆变系统已成为消除高次谐波的重要拓扑结构，成为国内外学者的研究热点。在拓扑结构和调制策略确定的情况下，对系统的解耦控制成为系统稳定性与性能好坏的决定性因素。论述传统单一控制策略在LCL型并网逆变系统的局限性、复合控制策略的优势及2种复合控制的不同组合方式的优缺点。对并联复合控制——比例积分控制(proportion-integral，PI)＋重复控制(repeat-control，RC)的内在控制机制进行分析，通过调节PI控制的参数降低耦合程度对系统的影响。

Abstract

The LCL grid-connected inverters have become an important topology structure for eliminating high-order harmonics, and become a research hotspot for scholars at home and abroad. When the topology and modulation strategy are determined, the decoupling control of the system becomes the decisive factor for the stability and performance of the system. This paper discusses the limitations of traditional single control strategy in LCL grid-connected inverters, the advantages of compound control strategy and the advantages and disadvantages of different combinations of two kinds of compound control. The internal control mechanism of parallel compound control proportion-integral (PI) ＋ repeat-control (RC) is analyzed, and the influence of coupling degree on the system is reduced by adjusting the parameters of PI control.

导出引用

刘述喜, 王强. 并网逆变系统的复合控制技术研究[J]. 分布式能源. 2018, 3(6): 20-24 https://doi.org/10.16513/j.cnki.10-1427/tk.2018.06.003

Shuxi LIU, Qiang WANG. Compound Control Technology of Grid-Connected Inverter System[J]. Distributed Energy Resources. 2018, 3(6): 20-24 https://doi.org/10.16513/j.cnki.10-1427/tk.2018.06.003

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