This paper deals with simulation/modelling, controlling of maximum power point tracking (MPPT) used in PV systems to maximize the output power of photovoltaic system, irradiation conditions irrespective of the temperature of VI characteristics of load. In this research an important maximum power point tracking technique has been developed, consisting a boost converter, which is controlling pulse given by a microcontroller-based unit. The method used in the proposed PV system for tracking maximum power is perturb & observe algorithm which is directly used to take control action by duty cycle of converter for varying load voltage, thus the complexity of the PV system will be reduced. The result has high-efficiency, lower-cost and can be easily controlled and modified to handle more energy sources. MPPT is a fully electronic system. It varies the electrical operating point of the modules so that they are able to deliver maximum available power.
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