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

The Korean Institute of Power Electronics (전력전자학회)
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Circulating Current Control of a Modular Multi-level Converter(MMC)-HVDC System based on VPI(Vector-PI) Control for DC Power Network

DC 전력망 구축을 위한 VPI 제어 기반 MMC-HVDC 시스템의 순환전류 제어 기법

  • Kim, Si-Hwan (Dept. of Electrical Engineering., HYPEC-EECS Lab., Hanyang University) ;
  • Lee, June-Sun (Dept. of Electrical Engineering., HYPEC-EECS Lab., Hanyang University) ;
  • Cho, Young-Pyo (Smart Power Distribution Lab. Korea Electric Power Corporation Research Institute) ;
  • Kim, Rae-Young (Dept. of Electrical Bio-Engineering, Hanyang University)
  • Received : 2017.02.14
  • Accepted : 2017.03.24
  • Published : 2017.06.20
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Abstract

This paper proposes a novel circulating current control method for an MMC-HVDC system based on Vector PI control. The method can suppress second-order harmonics of the circulating currents under balanced and unbalanced grid conditions. The proposed method is robust to grid frequency variation. The effectiveness of the proposed method is verified through frequency response and time domain simulation.

Keywords

References

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