Module Integrated Converters and Independent MPPT Technique

As the irradiance changes, the current at the maximum power generating point (MPP) of the photovoltaic (PV) cell system fluctuates. But when the temperature changes, its voltage is affected more. In actual conditions when operating in a partial shade (PSC) condition, fluctuation of these two parameters makes it difficult to determine the global maximum power point tracking (GMPPT) accurately. The compatibility between the PV system topology and the algorithm plays an important role in improving the performance of the whole system. This paper proposes a PV module architecture combined with inverters and a standalone MPPT technique operating under non-uniform temperature and radiation conditions. A modified P and O algorithm with multiple inrush current values as an input parameter is simulated in the PSC. The research results in this paper have shown that the proposed solution not only has outstanding speed but also has the ability to significantly improve performance compared to published methods under the same operating conditions.