In order to effectively utilize solar energy, it is necessary to study the maximum power point tracking (MPPT) control of photovoltaic power generation systems. In this paper, a two-stage photovoltaic grid-connected power generation system is taken as the research object, and a mathematical model of the photovoltaic array under any external environment is established. Due to the nonlinear output characteristics of the photovoltaic array, the fuzzy control idea is introduced into the maximum power point tracking, and the MPPT control strategy of the perturbation observation method of duty cycle fuzzy control is proposed, and it is verified by computer simulation. Compared with the traditional duty cycle perturbation observation method, this method can track the maximum power point of the solar cell more quickly and accurately.
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