On the Stability of Power Electronics-Dominated Systems: Challenges and Potential Solutions

Qiao Peng, Qin Jiang, Yongheng Yang*, Tianqi Liu, Huai Wang, Frede Blaabjerg

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Resumé

The modern power system is becoming more complicated due to the ever increasing penetration of power electronics, which is referred to as a power electronics-dominated system (PEDS). In this case, the analysis, control, and operation of the entire power system should tone with the energy-paradigm transition pace, where the challenges should be properly tackled. After the brief introduction of grid-connected converters, this paper explores stability challenges of PEDSs, especially on the low inertia issue and the multi-timescale characteristics, as well as the dynamics when connected to weak grids. The low inertia issue is considered as one of great challenges that power electronics introduce to the conventional power grids. On this basis, the stability issues of PEDSs are discussed. The exploration reveals that the multi-timescale coupling among various control loops and the mutual effects of multiple converters demand much more attention than ever before. Also, the coordinated control of converters for the global stability of PEDSs is summarized, part of which offers the possibility to solve the inertia problem. This paper serves as inspiration on potential solutions to these issues. In order to provide a more intuitive impression of the inertia problem in PEDSs, a case study is exemplified to further highlight the analysis and discussion.
OriginalsprogEngelsk
TidsskriftIEEE Transactions on Industry Applications
Vol/bindPP
Udgave nummer99
Antal sider14
ISSN0093-9994
DOI
StatusE-pub ahead of print - aug. 2019

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Power electronics

Emneord

  • Power electronic converters
  • stability and control
  • low-inertia systems
  • virtual inertia
  • multi-timescale analysis
  • mutual effect
  • modeling
  • power electronics-dominated systems

Citer dette

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abstract = "The modern power system is becoming more complicated due to the ever increasing penetration of power electronics, which is referred to as a power electronics-dominated system (PEDS). In this case, the analysis, control, and operation of the entire power system should tone with the energy-paradigm transition pace, where the challenges should be properly tackled. After the brief introduction of grid-connected converters, this paper explores stability challenges of PEDSs, especially on the low inertia issue and the multi-timescale characteristics, as well as the dynamics when connected to weak grids. The low inertia issue is considered as one of great challenges that power electronics introduce to the conventional power grids. On this basis, the stability issues of PEDSs are discussed. The exploration reveals that the multi-timescale coupling among various control loops and the mutual effects of multiple converters demand much more attention than ever before. Also, the coordinated control of converters for the global stability of PEDSs is summarized, part of which offers the possibility to solve the inertia problem. This paper serves as inspiration on potential solutions to these issues. In order to provide a more intuitive impression of the inertia problem in PEDSs, a case study is exemplified to further highlight the analysis and discussion.",
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On the Stability of Power Electronics-Dominated Systems: Challenges and Potential Solutions. / Peng, Qiao; Jiang, Qin; Yang, Yongheng; Liu, Tianqi; Wang, Huai; Blaabjerg, Frede.

I: IEEE Transactions on Industry Applications, Bind PP, Nr. 99, 08.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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AU - Yang, Yongheng

AU - Liu, Tianqi

AU - Wang, Huai

AU - Blaabjerg, Frede

PY - 2019/8

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AB - The modern power system is becoming more complicated due to the ever increasing penetration of power electronics, which is referred to as a power electronics-dominated system (PEDS). In this case, the analysis, control, and operation of the entire power system should tone with the energy-paradigm transition pace, where the challenges should be properly tackled. After the brief introduction of grid-connected converters, this paper explores stability challenges of PEDSs, especially on the low inertia issue and the multi-timescale characteristics, as well as the dynamics when connected to weak grids. The low inertia issue is considered as one of great challenges that power electronics introduce to the conventional power grids. On this basis, the stability issues of PEDSs are discussed. The exploration reveals that the multi-timescale coupling among various control loops and the mutual effects of multiple converters demand much more attention than ever before. Also, the coordinated control of converters for the global stability of PEDSs is summarized, part of which offers the possibility to solve the inertia problem. This paper serves as inspiration on potential solutions to these issues. In order to provide a more intuitive impression of the inertia problem in PEDSs, a case study is exemplified to further highlight the analysis and discussion.

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