Maximum power point tracker using fuzzy control for photovoltaicarrays

摘要

The solar cell has an optimum operating point to be able to getthe maximum power. To obtain the maximum power from a photovoltaicarray, the photovoltaic power system usually requires a maximum powerpoint tracking controller. This paper proposes a maximum power pointtracking control of photovoltaic array using fuzzy control; thecontroller only uses the output power. Therefore, this control method iseasy to implement to a real system. Moreover, this method can trackmaximum power point rapidly with fuzzy inference even if the optimumoperating point changes. The usefulness of this control method isconfirmed by experiments using step-down chopper with constant resistiverod