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

  • 제19권2호
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  • Pages.194-200
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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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DC 마이크로그리드에서 에너지 저장장치를 위한 양방향 DC-DC컨버터의 무순단 절체 제어기법

A Seamless Transfer Method of Bidirectional DC-DC Converter for ESS in DC Micro-grids

  • Kwon, Min-Ho (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Park, Jung-Sung (Dept. of New Energy Eng., Seoul Nat'l Univ. of Science and Technology) ;
  • Choi, Se-Wan (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology)
  • 투고 : 2013.12.26
  • 심사 : 2014.02.21
  • 발행 : 2014.04.20
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초록

In DC micro-grid system energy storage systems (ESS) are responsible for storing energy and balancing power. Also, control target of the bidirectional DC-DC converter(BDC) for ESS should be changed depending on the operating mode. During the grid connected mode, the BDC controls the battery current or voltage. When a grid fault occurs, the BDC should change the control target to regulate the DC-bus. The BDC with conventional control method may experience large transient state during the mode change. This paper proposes a control method of BDC for ESS. The proposed control method is able to provide autonomous and seamless mode transfer by a variable current limiter. To validate the proposed concept, simulation results using PSIM and experimental results from a 2kW prototype are provided.

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참고문헌

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피인용 문헌

  1. A PCS Control Strategy for Hybrid ESS with Function of Emergency Power Supply vol.21, pp.4, 2016, https://doi.org/10.6113/TKPE.2016.21.4.302