电工技术学报  2015, Vol. 30 Issue (24): 152-159    DOI:
论文 |
LCL并网滤波器的非线性阻尼控制
杨仁增, 张光先
山东大学控制科学与工程学院 济南 250061
Nonlinear Damping Controller for Grid-Connected LCL Filters
Yang Renzeng, Zhang Guangxian
Shandong University Jinan 250061 China
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摘要 为提高LCL滤波并网变换器的控制性能,提出一种基于反馈线性化的LCL并网滤波电路级联非线性有源阻尼控制策略。该策略在三相LCL滤波并网变换器的仿射非线性模型基础上,采用级联的状态反馈线性化非线性控制方法,通过变换器网侧和桥臂侧有功电流、无功电流的全局线性化精确解耦控制,实现LCL滤波器的有源阻尼。所提非线性级联控制策略可消除LCL滤波电路的谐振尖峰,提升并网变换器的整机控制性能。仿真和实验验证了该控制策略的正确性和可行性。
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杨仁增
张光先
关键词 LCL并网滤波器有源阻尼非线性控制反馈线性化    
Abstract:This paper presents a cascading nonlinear controller that applies to the grid-connected converter with LCL filters, based on linearization control. Herein, on the basis of an affine nonlinear model of three-phase grid-connected converter with LCL filter, the active and reactive currents of the converter at grid side and converter side are controlled with global linearization, through decoupling exaction from nonlinear feedback linearization controller. Consequently, the active damping of the filter is obtained. The cascading nonlinear controller removes the resonance of LCL filters and promotes the control performance of the converter effectively. Simulation and experimental results show the validation and feasibility of the proposed strategy.
Key wordsGrid-connected LCL filter    active damping    nonlinear controller    feedback lineari- zation   
收稿日期: 2014-02-25      出版日期: 2015-12-30
PACS: TN713  
基金资助:国家自然科学基金资助项目(51207083、61471372)
作者简介: 杨仁增 男,1971年生,博士,工程师,研究方向为光伏并网逆变器及其电能质量控制。张光先 男,1965年生,博士,研究员,博士生导师,研究方向为电力电子与电力传动、特种电源技术。
引用本文:   
杨仁增, 张光先. LCL并网滤波器的非线性阻尼控制[J]. 电工技术学报, 2015, 30(24): 152-159. Yang Renzeng, Zhang Guangxian. Nonlinear Damping Controller for Grid-Connected LCL Filters. Transactions of China Electrotechnical Society, 2015, 30(24): 152-159.
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