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    Suzhou Electric Appliance Research Institute
    期刊號: CN32-1800/TM| ISSN1007-3175

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    基于改進無源-滑模的MMC抗擾動控制策略研究

    來源:電工電氣發布時間:2023-12-28 13:28 瀏覽次數:114

    基于改進無源-滑模的MMC抗擾動控制策略研究

    王佚安,徐建源,閆征
    (沈陽工業大學 電氣工程學院,遼寧 沈陽 110870)
     
        摘 要:傳統的 PI 控制、無源控制因其內部控制結構參數固定,在系統遇到擾動時,同一組參數無法同時保證系統在多種擾動下的響應速度及控制效果。在模塊化多電平換流器 (MMC) 歐拉-拉格朗日模型的基礎上引入滑??刂?,解決無源控制內部參數固定的問題,提升系統的抗擾動運行能力,并在原有的趨近律上進行優化,降低滑??刂谱陨泶嬖诘亩墩?,使系統有更好的動態特性。在 MATLAB/Simulink 平臺中搭建 MMC 仿真模型進行仿真,分別對應用 PI 控制、無源-滑??刂?、改進無源-滑???/span>制的電流內環進行對比分析,驗證了改進無源-滑??刂圃谙嗤姆抡鏃l件下具有更強的抗擾動性,響應速度更快,并且在滑??刂频幕A上改進趨近律后,有效降低了滑??刂谱陨泶嬖诘亩墩駟栴}。
        關鍵詞: 模塊化多電平換流器;三相不平衡;無源- 滑??刂?;趨近律
        中圖分類號:TM712 ;TM721.1     文獻標識碼:A     文章編號:1007-3175(2023)12-0009-06
     
    Research on MMC Anti-Disturbance Control Strategy Based on the
    Improved Passive-Sliding Mode Control
     
    WANG Yi-an, XU Jian-yuan, YAN Zheng
    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)
     
        Abstract: The traditional PI control and passive control have fixed internal control structure parameters, so when the system encounters disturbances, the same group of parameters cannot ensure the response speed and control results under multiple disturbances at the same time. First, the paper introduces the sliding mode control on the basis of MMC's Euler-Lagrange model to solve the problem of fixed internal parameters of passive control to improve the anti-disturbance operation ability of the system. Then, the original approaching law is optimized to reduce the vibration of the sliding mode control itself to keep the system having better dynamic characteristics. After building a MMC simulation model in the MATLAB/Simulink platform, the inner current loop applied with PI control, passive-sliding mode control and improved passive-sliding mode control respectively are compared. It verifies that the improved passive-sliding mode control has stronger anti-disturbance and faster response speed under the same simulation conditions. Moreover, as the approaching law is improved based on the sliding control, the vibration problem of sliding mode control itself is effectively reduced.
        Key words: modular multilevel converter; three-phase unbalance; passive-sliding mode control; approaching law
     
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