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

  • 제22권2호
  • /
  • Pages.159-165
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  • 2017
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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-DC Dual Active Bridge 컨버터의 소신호 모델링 및 제어기 설계에 관한 연구

Study on Small-signal Modeling and Controller Design of DC-DC Dual Active Bridge Converters

  • 투고 : 2016.09.30
  • 심사 : 2016.12.05
  • 발행 : 2017.04.20
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초록

Small-signal modeling and controller design methodology are proposed to improve the dynamics and stability of a DC-DC dual active bridge (DAB) converter. The state-space average method has a limitation when applied to the DAB converter because its state variables are nonlinear and have zero average values in a switching period. Therefore, the small-signal model and the frequency response of the DAB converter are derived and analyzed using a generalized average method instead of conventional modeling methods. The design methodology of a lead-lag controller instead of the conventional proportional-integral controller is also proposed using the derived small-signal model. The accuracy and performance of the proposed small-signal model and controller are verified by simulation and experimental results with a 500 W prototype DAB converter.

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참고문헌

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