基于线性自抗扰与重复控制的虚拟同步发电机并网逆变器控制策略
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TM464

基金项目:

国家自然科学基金(51767024;51667020);新疆维吾尔自治区高校科研计划项目(XJEDU2021I010)


Control Strategy of VSG Grid-connected Inverter based on Linear Active Disturbance Rejection and Repetitive Control
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    在强耦合、高精度控制等场合下,传统电压电流双闭环控制基于VSG的逆变器并网时会存在动态响应速度慢、抗干扰能力差的问题,由此提出基于VSG的新型电压电流双闭环控制策略,将线性自抗扰控制与重复控制相结合作为电压外环控制,电流内环仍采用PI控制,其中线性自抗扰控制抗干扰能力强,且加快了基于VSG的逆变器并网动态响应速度,重复控制提高双闭环控制跟踪精度。首先详细分析基于VSG的逆变器并网系统数学模型;其次进行线性自抗扰控制与重复控制的设计;最后在MATLAB/Simulink平台下搭建仿真模型,仿真结果表明:在功率扰动与三相短路故障工况下,所提控制策略加快了基于VSG的逆变器并网动态响应速度,且抗干扰能力强,跟踪精度高,验证了所提策略的有效性和可行性。

    Abstract:

    In the case of strong coupling and high-precision control, the traditional voltage and current double closed-loop control VSG-based inverters suffer from slow dynamic response and poor anti-interference capability as connected to the grid. Regarding this issue, a new voltage and current dual closed-loop control strategy based on VSG is proposed. Voltage outer loop control is composed of two parts, the linear self-turbulence control that has strong anti-interference ability and speeds up the dynamic response of the VSG-based inverter to the grid and repetitive control improving the tracking accuracy of the dual closed-loop control. The current inner loop is still controlled by PI. . Initially, the mathematical model of VSG-based inverter grid-connected system was analysed in detail. Additionally, the design of linear self-anti-disturbance control and repetitive control were carried out. Finally, the simulation model was built under MATLAB/Simulink platform. The simulation results show that the proposed control strategy accelerates the dynamic response speed of VSG-based inverter grid-connected under power disturbance and three-phase short-circuit fault condition and has strong anti-disturbance capability and high tracking accuracy. The effectiveness and feasibility of the proposed strategy are verified.

    参考文献
    相似文献
    引证文献
引用本文

吕聪,何山,王维庆,等. 基于线性自抗扰与重复控制的虚拟同步发电机并网逆变器控制策略[J]. 科学技术与工程, 2021, 21(36): 15460-15468.
Lü Cong, He Shan, Wang Weiqing, et al. Control Strategy of VSG Grid-connected Inverter based on Linear Active Disturbance Rejection and Repetitive Control[J]. Science Technology and Engineering,2021,21(36):15460-15468.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-05-20
  • 最后修改日期:2021-10-10
  • 录用日期:2021-08-31
  • 在线发布日期: 2022-01-04
  • 出版日期:
×
亟待确认的版面费信息
向全国科技工作者致敬!要追就追这样的星!