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首页> 外文期刊>Renewable Power Generation, IET >Improved auto-synchronisation of grid-connected PV inverter based on the DC capacitor voltage control
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Improved auto-synchronisation of grid-connected PV inverter based on the DC capacitor voltage control

机译：基于直流电容电压控制改进了网格连接的PV逆变器的自动同步

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摘要

Based on inherent dynamics similarity between synchronous generator (SG) and DC capacitor power port, this study proposes an improved synchronisation control method of grid-connected PV inverter based on DC capacitor voltage control where a DC-link capacitor voltage is regulated to provide the synchronisation angle. The proposed control method uses the estimated grid angle feedforward to improve the damping performance of the system under disturbances. To assess the robustness of the proposed control method, a two-step procedure is followed. Firstly, a reduced-order model of the system was derived. Secondly, the performance and stability of the proposed control method were fully investigated through the eigenvalue analysis. The offline simulations and real-time simulations are carried in PLECS software and PLECS RT Box, respectively in order to validate and demonstrate the effectiveness of the proposed control method. It has been found that the proposed control method yields a large band controller parameter setting while maintaining system stability. The results showed that the proposed method improved the operating capability and enhanced the performance of the system under disturbances and weak grid operation.
机译：基于同步发电机（SG）和DC电容电源端口之间的固有动力学相似性，本研究提出了一种基于基于DC电容电压控制的电网连接的PV逆变器的改进的同步控制方法，其中调节DC链路电容器电压以提供同步角度。所提出的控制方法使用估计的电网角度前馈，以提高干扰下系统的阻尼性能。为了评估所提出的控制方法的稳健性，遵循两步程序。首先，衍生出系统的减少阶模型。其次，通过特征值分析充分研究了所提出的控制方法的性能和稳定性。离线模拟和实时模拟分别在PLECS软件和可接受的RT盒中携带，以便验证和证明所提出的控制方法的有效性。已经发现，所提出的控制方法在保持系统稳定性的同时产生大带控制器参数设置。结果表明，该方法提高了操作能力，增强了干扰和弱网格运行下系统的性能。

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  • 来源
    《Renewable Power Generation, IET》 |2020年第5期|684-694|共11页
  • 作者

    Musengimana Antoine; Zheng Xuemei; Li Haoyu;

  • 作者单位

    Harbin Inst Technol Dept Elect Engn Harbin Peoples R China;

    Harbin Inst Technol Dept Elect Engn Harbin Peoples R China;

    Harbin Inst Technol Dept Elect Engn Harbin Peoples R China;

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