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Realization of a Control Platform of a Photovoltaic System Optimized by MPPT Strategy 'Perturb and Observe'

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Most energy resources are indirectly derived from solar energy which is an abundant renewable energy resource that could be a good alternative of non-renewable sources such as fossil fuels. Regardless of the solar photovoltaic’s technological competitiveness, which is deemed to be one of the main direct solar technologies, it still has a major drawback, which is its low energy conversion efficiency. In order to overcome the problem of photovoltaic panel (PV) performance and to achieve maximum efficiency, two aspects should be carried out. First, it is necessary to optimize the most suitable design of all parts of the photovoltaic chain; on the other hand, an adaptation stage (DC-DC converter) should be inserted between the photovoltaic generator (GPV) and the load. This stage is controlled by a microcontroller, which allows the system to search and reach the maximum power point (MPP). In fact, many maximum power point tracking (MPPT) techniques are used to control the PV system. Among all the MPPT strategies, 'Perturb and Observe' (P&O) is widely applied as a controller strategy due to its simplicity and easy implementation. The work presented in this article deals with the realization of a control platform of a photovoltaic system through an Arduino Mega board via Matlab-Simulink software. This experimental platform allows the photovoltaic system to extract the maximum power available using the 'Perturb and Observe' algorithm. The results obtained from this experimental study have demonstrated the satisfactory operation of a PV power system and the better achievement of the optimal operating point (MPP). The validation of the proposed controller is shown by Matlab-Simulink. Therefore, the platform can be assessed as a cost-effective device for optimizing photovoltaic chain.
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PV; DC-DC Converter; P&O; Arduino; Simulink

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