杨林;曾江;黄仲龙;

• 1:华南理工大学电力学院

摘要(Abstract)：

有源阻尼是解决LCL滤波器谐振问题的有效措施,传统的电容电流反馈有源阻尼方法需要增加额外的电流传感器,并网电流反馈有源阻尼存在微分信号提取困难等问题。为此,提出基于线性自抗扰技术(linear active disturbance rejection control,LADRC)的LCL逆变器并网电流控制及有源阻尼策略。基于LCL滤波器数学模型,设计三阶LADRC并网电流控制器,分析LADRC的跟踪和抗扰能力;将扩张状态观测器(extend state observer,ESO)得到的并网电流微分及二阶微分观测信号作为有源阻尼反馈量,以实现基于并网电流微分反馈的谐振抑制目标,避免了传统直接求取电流微分带来的噪声等问题。仿真和实验结果证明了本文所提策略的有效性。

关键词(KeyWords)： LCL型并网逆变器;有源阻尼;线性自抗扰控制;扩张状态观测器;状态反馈

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51477055,51777078)~~

作者(Author): 杨林;曾江;黄仲龙;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.0975

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