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

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    基于Park變換的單相逆變器靜態前饋補償控制策略

    來源:電工電氣發布時間:2018-09-14 09:14 瀏覽次數:626
    基于Park變換的單相逆變器靜態前饋補償控制策略
     
    趙月,崔遠慧,王延平
    (大連工業大學 信息科學與工程學院,遼寧 大連 116000)
     
        摘 要:針對單相光伏逆變器在雙閉環控制系統中電流環采用典型Ⅰ型系統時存在抗干擾性能差的缺點,提出了一種新的電流內環靜態前饋補償控制策略。通過改進的Park變換,獲得單相逆變器的等效模型,在等效逆變器模型中利用前饋解耦控制的方法得到電流的控制方程,在典型Ⅰ型電流內環控制系統中加入具有靜態前饋補償控制環節的方法抑制電流內環的干擾信號。通過SIMULINK仿真可以得出,具有靜態前饋控制的電流內環控制器對比采用典型Ⅰ型系統控制器的靜態性能和動態性能均良好,有效提高了電流環的抗干擾性能。
        關鍵詞:太陽能光伏逆變器;Park 變換;靜態前饋補償;逆變器前饋解耦控制
        中圖分類號:TM464     文獻標識碼:A     文章編號:1007-3175(2018)09-0012-04
     
    Park Transform-Based Static Feed-Forward Compensation Control Strategy for Single-Phase Inverter
     
    ZHAO Yue, CUI Yuan-hui, WANG Yan-ping
    (School of Information Science and Engineering, Dalian Polytechnic University, Dalian 11 6000, China)
     
        Abstract: Aiming at the existing disadvantages of inferior anti-interference ability when the current loop of single-phase photovoltaic inverter adopts the typical I-type system in double closed-loop control system, this paper proposed a kind of new static feed-forward compensation control strategy for current loop. Through the improved Park transformation, the equivalent model of the single-phase inverter was obtained. In the equivalent inverter model the feed-forward decoupling control method was used to get the control equation of the currents. For the interference signal in the current control equation, the static feed-forward compensation control method was used to eliminate the interference signal present in the inner loop of the current. The SIMULINK simulation shows that for the current loop with the static feedforward control, the static property of typical I-type system controller was the same as that of dynamic property, which effectively improves the anti-interference ability of the current loop.
        Key words: solar photovoltaic inverter; Park transform; static feed-forward compensation; inverter feed-forward decoupling control
     
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