DC-DC Dual Active Bridge 컨버터의 소신호 모델링 및 제어기 설계에 관한 연구
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- DC-DC Dual Active Bridge 컨버터의 소신호 모델링 및 제어기 설계에 관한 연구
- Other Titles
- Study on Small-signal Modeling and Controller Design of DC-DC Dual Active Bridge Converters
- 이원빈; 최현준; 조진태; 정지훈
- Issue Date
- 전력전자학회 논문지, v.22, no.2, pp.159 - 165
- 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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