The objective of this paper is to evaluate the performance of two solar interconnection technologies, shingle and standard, under the specific operational conditions of the city of El Jadida, Morocco. We studied Dualsun PV modules, using shingle technology, and Almaden PV modules, based on standard technology. Performance parameters such as module temperature, efficiency and performance ratio were measured and analyzed. The results reveal that the temperature of the module using shingle technology (Dualsun PV module) is lower than that of the modules using standard technology (Almaden PV module), leading to better performance for the Dualsun PV module. In addition, the difference between the electrical efficiency of the Almaden PV module and the values provided by the manufacturer is 14.65%, while for the Dualsun module the largest difference is 12.71%. In addition, the Dualsun module has the highest average performance Ratio (90.5%), compared with 90% for the Almaden module.

The productivity of photovoltaic (PV) and photovoltaic thermal (PVT) systems depends on environmental conditions and can vary considerably depending on the geographical area. In this study, we evaluated and compared the actual performance of a commercial water-based PVT system (PVT Dualsun Spring) with that of a PV system (PV Dualsun Flash) under the specific conditions of the city of El Jadida. The results show that the PVT system offers better performance than the PV system, mainly thanks to the cooling that reduces the temperature of the cells. When irradiance reaches a maximum of 1055.6 W/m², the PVT system generates 3.92% more electrical power than the PV system. In addition, its electrical efficiency is 4.11% higher than that of the PV system.

In this article, we present the results related to the design, the realization and the experimentation of an autonomous PV system equipped with a solar regulator and digital MPPT command. The solar regulator controls the state of charge of batteries, and in the same time the energy supplied by photovoltaic panels is optimized to the maximum independently of weather. This late function is ensured by a DC/DC converter of Boost-type and a digital MPPT command based on the use of a microcontroller. The results obtained during days with weather perturbations, showed the robustness of the PV system (stability, optimal functioning of PV panels), the good control of charge of batteries under the maximum of energy supplied by the PV panels, according to three phases, determinate the state of charge and the protection against the overcharge and the deep discharge

In this paper, we present results concerning the design, the realization and the characterization of a photovoltaic system (PV), equipped with a digital controls: Power Point Tracking (MPPT), charge/discharge lead acid batteries, sun tracker and supervision. These different functions are performed with a microcontroller that has capabilities and functions to the reliability of PV systems (signal generation Pulses Width Modulation (PWM), speed etc.). Concerning the MPPT control operation, we improved the accuracy and reliability of research by improving the search algorithm “Hill Climbing” taking into account the optimal operation of PV panels depending on weather conditions (temperature and light).The experiment of each block shows that the MPPT control converges instantly the operating point of the PV panels around the maximum power point, independently of sudden changes of the illumination or the load. The control blocks charge/discharge battery and sun tracking show good control of charge/discharge lead acid batteries and the need of sun tracker to increase the power supplied by the PV panel. By using the improved MPPT control, loss of power supplied by the PV panels are very low (below 5%).

In this paper, we present experimental results of a photovoltaic system (PV) provided with two analog and digital MPPT commands. The disadvantage of these commands is that they are suffering from divergence problems caused by a sudden change in weather conditions (light, temperature,) or load variations. Therefore, we developed a CDCS circuit for the analog MPPT command to optimize the reliability of PV system independently of weather conditions changes or load variations. The functioning of the PV system during whole days shows a very good agreement between the experiment and the optimal simulation of the electric properties of the PV panel (voltage, current and power). The low losses of electrical energy produced by the PV panel (lower than 5%) and the smooth functioning of the DC/DC converter used (efficiency upper to 80%) reveal the good functioning and reliability of the systems using both types of MPPT commands conceived and realized during this work