Evaluation of the Efficiency and Control of a 250 W Solar Micro Inverter Connected to the Electrical Distribution Network Operating Above 3800 masl

Francisco Lima Flores J.; Manuel Ramos Cutipa J.; Fredy Chura Acero J.; Percy Clavetea Meneses W.; Bernardo Coyla Apaza F.; Jesus Betran Castañon N.; Homero Gutierrez Gallegos A. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2024) · DOI: 10.18687/laccei2024.1.1.1816

Resumen

Micro inverters, with a distributed orientation and unlike a conventional inverter that had a centralized installation approach, are installed behind each solar panel and convert direct current electricity to alternating current, just below the panel. All micro inverters can be connected directly to the home network, independently of the other micro inverters in the system. When a panel is shaded, for example, it will in no way affect the performance of the other panels. The main objective of this work is to evaluate the efficiency and regulation of the 250W grid connection micro inverter operating in the geographical and climatic conditions of 3800 meters above sea level, to improve the operation of these systems in the area. from Puno. If the evaluation and regulation of the micro inverter will be carried out, we will have better efficiency in the work of this team, which is the micro inverter. The methodology will go with the correct voltage found through a technique called Maximum Power Point Tracking or MPPT. When the maximum power point is applied at the panel level rather than a system as a whole. Performance will increase dramatically, bringing a better solution to the customer. Finally, a measurement system was used that helped us to collect data. As a result, the efficiency of our micro inverter is greater than 90 percent, at the same time it works with power factors very close to unity, if the equipment works at a capacity greater than 20%, on the date of analysis the maximum efficiency was 93.215%. One of the conclusions in this case, as the power of the micro inverter is greater than that of the photovoltaic generator, does not have limitations or what guarantees that it operates in optimal conditions.

Instituciones: Universidad Nacional del Altiplano