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

The Korean Institute of Power Electronics (전력전자학회)
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DC-Link Voltage Control of Distribution Static Compensator using Ripple Voltage Extraction

맥동 전압 추출을 통한 배전용 정지형 보상기의 직류링크 전압제어

  • Kim, Ho-Yeol (Smart Grid Lab., LS Industrial System) ;
  • Choi, Jong-Woo (College of IT Dept. of Electrical Eng., Kyungpook National University)
  • Received : 2011.10.05
  • Accepted : 2011.11.15
  • Published : 2012.02.20
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Abstract

DSTATCOM is active filter that reduces nonlinear and unbalanced currents. Researches about DSTATCOM are mainly divided two parts, one is the reference value calculation of compensation current depending on the calculation of the load-side average active power and dc-link capacitor average voltage, the other part is actual current control depending on the reference value of compensation current. This paper proposes a calculation of dc-link capacitor average voltage ripple voltage extraction instead of conventional method using LPF. The utility of the proposed algorithm is verified through the theoretical analysis and the experiment under unbalance loads and non-linear load.

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References

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