The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Comparison of MPPT Control Method Characteristic for Stand-alone PV System

독립형 태양광 발전시스템의 MPPT 제어기법 특성비교

  • 이용식 (순천대 공대 정보통신공학부) ;
  • 김남인 (순천대 공대 전기공학과) ;
  • 정성원 (순천대 공대 정보통신공학부) ;
  • 김재현 (순천대 공대 전기제어공학과)
  • Received : 2011.09.10
  • Accepted : 2011.11.28
  • Published : 2012.01.01
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Abstract

Maximum power point tracking(MPPT) techniques are used in photovoltaic systems to maximize the PV array output power by tracking continuously the maximum power point which depends on panels temperature and on irradiance conditions. This paper proposes a variable step size MPPT algorithm which can improve the MPPT speed and accuracy. Depending on insolation and temperature, the MPPT controller gives optimized step size. The effectiveness of the proposed system is verified thorough PSIM simulation and experiments on a 50[W] prototype. The experimental results confirm that the PV power of the improved P&O method is higher than that of the traditional P&O method.

Keywords

References

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