Frequency Coupling Characteristic Impedance Model and Stability Analysis of Modular Multilevel Converter
编号:217 访问权限:公开 更新:2020-11-01 12:29:10 浏览:308次 张贴报告

报告开始:2020年11月04日 14:40(Asia/Shanghai)

报告时间:5min

所在会场:[G] Poster session [G1] Poster Session 1 and Poster Session 6

摘要
The high voltage direct current transmission system using modular multilevel converter (MMC) can effectively reduce the output harmonics and switching losses, while it will bring the outstanding system stability problems. Impedance-based stability analysis method is an effective way to analyze the harmonic resonance of MMC system. The frequency coupling effect of positive and negative sequence impedance affects the impedance characteristics of MMC. Ignoring the frequency coupling effect, the stability analysis of the converter grid-connected system may lead to inaccurate analysis results. Firstly, this paper reveal the frequency coupling mechanism of MMC by analyzing the interaction between perturbation components and steady-state harmonics. Secondly, the harmonic transfer matrix is used to establish the MMC frequency coupling model under constant power control mode. The main influence factors of frequency coupling characteristics and the influence on system stability are also analyzed. Finally, the simulation results based on MATLAB/Simulink validate the accuracy of the frequency coupling model and the correctness of the system stability analysis results.
关键词
MMC, multiharmonic linearization, frequency coupling model, system stability analysis
报告人
Qiao Kang
Xi'an Jiaotong University

稿件作者
Bo Yue State Grid Economic and Technological Research Institute Co., Ltd.
Xuan Li State Grid Economic and Technological Research Institute Co., Ltd.
Qiao Kang Xi'an Jiaotong University
Yue Wang Xi'an Jiaotong University
Zhuling Li Xi'an Jiaotong University
Fengmo Li Xi'an Jiaotong University
发表评论
验证码 看不清楚,更换一张
全部评论
重要日期
  • 会议日期

    11月02日

    2020

    11月04日

    2020

  • 10月27日 2020

    初稿截稿日期

  • 11月03日 2020

    报告提交截止日期

  • 11月04日 2020

    注册截止日期

  • 11月17日 2020

    终稿截稿日期

主办单位
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
承办单位
Huazhong University of Science and Technology
联系方式
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询