王辉

副教授 博士生导师 硕士生导师

入职时间:2016-09-08

所在单位:自动化学院

职务:professor

学历:博士研究生毕业

办公地点:中南大学校本部民主楼105

性别:男

联系方式:wanghuicp9@csu.edu.cn

学位:博士学位

在职信息:在职

主要任职:副教授 博导

其他任职:无

毕业院校:中南大学

学科:电气工程

曾获荣誉:

2020-12-18  当选:  省部级——中国有色金属工业科学技术奖一等奖——电解铜箔生产自动化关键技术及应用

2018-02-27  当选:  省部级——自然科学奖二等奖——矩阵变换器系统的基础理论研究

2019-08-01  当选:  第十四届中国研究生电子设计竞赛——优秀指导教师——国家一等奖

2021-04-07  当选:  湖湘青年英才

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Observer-based second-order sliding mode control for grid-connected VSI with LCL-type filter under weak grid

发布时间:2021-07-28

点击次数:

影响因子:3.414

DOI码:10.1016/j.epsr.2020.106270

发表刊物:Electric Power Systems Research

关键字:LCL filter; Poles placement; Weak grids; Sliding mode observer; Second order sliding mode control

摘要:LCL-type grid-connected voltage source inverters (VSI) have been widely used in distributed generation systems. However, due to the inherent LCL resonance, it brings a stability challenge to the control system. To address this issue, a sliding mode observer-based second-order sliding mode control method is proposed to achieve arbitrary poles placement, which can ensure desired resonance damping and dynamic performance even under weak grid operation. With the help of sliding mode observer (SMO), only the grid current and grid voltage are sensed to realize system stable operation and grid synchronization, which reduces the cost of system. To improve the robustness and dynamic response of LCL-filtered grid-connected inverters under weak grid operation, a super-twisting algorithm (STA) second order sliding mode control (SOSMC) is proposed. Due to the existence of grid impedance in weak grid, the sliding surface would drift, which increases the track error of grid current. To solve this problem, an integral term is added to the sliding surface function. The systematic design approach of SOSMC is presented, and the stability of system under the grid impedance uncertainties as well as external disturbances is proved by Lyapunov theory. Simulation results are finally presented to validate the effectiveness of the proposed control strategy.

合写作者:Su, Mei, Wang, Hui*, Tang, Zhongting, Lian, Yuefeng, Zhang, Lei, Shi, Shuqi

第一作者:Guo, Bin

论文类型:期刊论文

论文编号:20200908216676

学科门类:工学

一级学科:电气工程

文献类型:J

卷号:183

ISSN号:03787796

是否译文:

发表时间:2020-06-01

收录刊物:SCI、EI

发布期刊链接:https://www.engineeringvillage.com/search/doc/detailed.url?SEARCHID=fd177d4570224a789280cefebf2ee3ef&DOCINDEX=1&database=16826499&pageType=quickSearch&searchtype=Quick&dedupResultCount=null&format=qui

附件:

  • Observer-Based Second-Order Sliding Mode Control for Grid-Connected VSI with LCL Filter Under Weak Grid.pdf

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