The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Performance Test Circuit and Control Method for Submodule of MMC-HVDC System

MMC-HVDC 시스템용 서브모듈 성능시험회로와 제어기법

  • Jo, Kwang-Rae (Dept. of Electrical Eng., Pukyong National University) ;
  • Seo, Byuong-Jun (Dept. of Electrical Eng., Pukyong National University) ;
  • Park, Kwon-Sik (Dept. of Electrical Eng., Pukyong National University) ;
  • Kim, Hak-Soo (Dept. of Electrical Eng., Pukyong National University) ;
  • Heo, Jin-Yong (Dept. of Electrical Eng., Pukyong National University) ;
  • Nho, Eui-Cheol (Dept. of Electrical Eng., Pukyong National University)
  • Received : 2019.07.23
  • Accepted : 2019.09.03
  • Published : 2019.12.20
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Abstract

This study proposes a new test circuit and control method for the submodules of modular multilevel converter (MMC)-based HVDC systems. The test current of conventional submodule test circuits cannot provide the DC offset components or may have some distortion in the linearized current with the DC offset. The proposed scheme can provide not only the DC component but also linearized current without distortion. Therefore, the submodule test current waveform is relatively similar to that of a real submodule consisting of an MMC-based HVDC system. The validity of the proposed circuit and control method is verified through a simulation and experiment.

Keywords

References

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