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

  • 제19권5호
  • /
  • Pages.422-430
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  • 2014
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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배터리 에너지 저장 장치를 위한 2단 DC-DC-AC 컨버터의 모델링 방법

Modeling and Control of a Two-Stage DC-DC-AC Converter for Battery Energy Storage System

  • Hyun, Dong-Yub (Dept. of Electrical Eng., HYPEC LAB., Hanyang University) ;
  • Jung, Seok-Eon (Dept. of Electrical Eng., HYPEC LAB., Hanyang University) ;
  • Hyun, Dong-Seok (Dept. of Electrical and Biomedical Eng., Hangyang University)
  • 투고 : 2014.05.08
  • 심사 : 2014.06.25
  • 발행 : 2014.10.20
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초록

This study proposes a small-signal model and control design for a two-stage DC-DC-AC converter to investigate its dynamic characteristics in relation to battery energy storage system. When the circuit analysis of the two-stage DC-DC-AC converter is attempted simultaneously, the mathematical procedure of deriving the dynamic equation is complex and difficult. The main idea of modeling the two-stage DC-DC-AC converter states that this topology is separated into a bidirectional DC-DC converter and a single-phase inverter with an equivalent current source corresponding to that of the inverter or converter. The dynamic equations for the separated converter and inverter are then derived using the state-space averaging technique. The procedures of building the small-signal model of the two-stage DC-DC-AC converter are described in detail. Based on the derived small-signal model, the individual controllers are designed through a frequency-domain analysis. The simulation and experimental results verify the validity of the proposed modeling approach and controller design.

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참고문헌

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