Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Novel Two-Mode MPPT Control Algorithm Based on Comparative Study of Existing Algorithms

새로운 MPPT 알고리듬의 시뮬레이션 및 실험을 통한 실증 연구

  • Choi, J.Y. (Dept. of Electrical Engineering, Kwangwoon Univ) ;
  • Yu, G.J. (Photovoltaic Generation Team, Korea Institute of Energy Research) ;
  • Jeong, Y.S. (Photovoltaic Generation Team, Korea Institute of Energy Research)
  • Published : 2002.04.25
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Abstract

As is well-known, the maximum power point(MPP) of PV power generation system depends on array temperature and solar insolation, it is necessary to track MPP of solar array all the time. Among various MPP control algorithms, the constant voltage control method, the perturbation and observation(P&O) method and the incremental conductance method(IncCond) have drawn many attractions due to the usefulness of each system. In this paper, the effectiveness of above mentioned three different control algorithms are thoroughly investigated via simulations and proposed efficiency evaluation method on experiment. Both the steady-state and transient characteristics of each control algorithms along with measured efficiency are analyzed, respectively. Finally, a novel MPPT control algorithm combining the constant voltage control and IncCond method for low insolation condition is proposed to improve efficiency of the 3KW PV power generation system.

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