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

The Korean Institute of Power Electronics (전력전자학회)
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Variable Step-Size MPPT Control based on Fuzzy Logic for a Small Wind Power System

소형풍력발전시스템을 위한 퍼지로직 기반의 가변 스텝 사이즈 MPPT 제어

  • Choi, Dae-Keun (School of Electrical and Computer Eng., Ajou University) ;
  • Lee, Kyo-Beum (School of Electrical and Computer Eng., Ajou University)
  • Received : 2011.11.14
  • Accepted : 2012.03.06
  • Published : 2012.06.20
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Abstract

This paper proposes the fuzzy logic based variable step-size MPPT (Maximum Power Point Tracking) method for the stability at the steady state and the improvement of the transient response in the wind power system. If the change value of duty ratio is set on stability of the steady state, MPPT control traces to maximum power point slowly. And if the change value is set on improvement of the transient response, the system output oscillates at the maximum power point. By adjusting the step size with fuzzy logic, it can be improved the MPPT response speed and stability at steady state when MPPT control is performed to track the maximum power point. The effectiveness of the proposed method has been verified by simulations and experimental results.

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References

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