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1693 / 2020-09-29 17:52:02
Impedance modeling of modular multilevel converter based on multi-harmonic linearization
Multi-Harmonic linearization,Impedance modeling,Modular multilevel converter,Harmonic
Power Electronics Technology and Application > Control, modeling and optimization of power converter
终稿
Chang Xiong / School of Electronic Engineering, Xi'an Jiaotong University
Zhiyuan Tan / Institute of Applied Electronics, China Academy of Engineering Physics
Chenbo Xu / Institute of Applied Electronics, China Academy of Engineering Physics；School of Electronic Engineering, Xi'an Jiaotong University
Shaoqi Yu / School of Electronic Engineering, Xi'an Jiaotong University
Mengke Lu / State Grid Zhejiang Electric Power Co., Ltd.
Modular Multilevel Converter (MMC) has the advantages of modular design and low AC voltage distortion. Recent studies reported harmonic instability problems in MMC-connected grids. Impedance-based stability criterion has proven to be effective for analyzing harmonic instability, which requires the impedance model of MMC. Based on the review of converter modeling methods, this paper establishes an impedance model of MMC using multi-harmonic linearization method. The modeling focus on the positive sequence. The on-resistance of MMC submodule switches is considered in the modeling of power stage of MMC. The control modeling comprises the modeling of five controls including phase current control, circulating current control, phase-locked loop, active power control as well as reactive power control. Finally, the results obtained by PSCAD simulation confirms that the impedance model is correct in an excellent accuracy.

 
重要日期

  • 会议日期

    11月02日

    2020

    至

    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
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