Virtual DC Machine Control Strategy for Stability Improvement in DC Microgrid with Constant Power Loads
编号:116 访问权限:仅限参会人 更新:2022-05-16 16:50:08 浏览:221次 张贴报告

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摘要
With a large number of constant power loads connecting to DC microgrid, the negative damping characteristics of constant power loads reduces the stability of DC microgrid. In order to improve the system stability, a voltage stability control strategy based on virtual DC machine (VDCM) is proposed in this paper. This paper focused on the bidirectional DC/DC converter with droop control strategy. By introducing the VDCM link into the feedback branch of double closed-loop droop control strategy, the VDCM control strategy improves the system stability without affecting the performance of voltage loop and current loop. Then, the small signal model of the system is established to analyze the system stability by using the Middlebrook criterion. The analysis results show that the VDCM control strategy can effectively increase the system damping and improve the system stability. Finally, a simulation model is built by PSCAD/EMTDC to verify the effectiveness of the proposed control strategy.
 
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报告人
YanLiu
华北电力大学

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重要日期
  • 会议日期

    05月27日

    2022

    05月29日

    2022

  • 02月28日 2022

    初稿截稿日期

  • 05月29日 2022

    注册截止日期

  • 06月22日 2022

    报告提交截止日期

主办单位
IEEE Beijing Section
China Electrotechnical Society
Southeast University
协办单位
IEEE Industry Applications Society
IEEE Nanjing Section
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