Parallel inverters in photovoltaic systems for isolated applications

Solar energy today is an important part of our daily lives and the environment around us. Currently, distributed energy schemes can improve industrial systems by installing a DC / AC converter in the new point of load, this is very interesting because it is possible to operate large systems using multiple inverters connected in parallel. This paper presents the approaches existing in the literature for parallel connected inverters that do not use intercom lines between them, and a practical solution using a sliding mode control (SMC) is presented. Simulation results and experimental results show that the proposed solution is a good alternative for connecting parallel inverters, a simple implementation is obtained resulting in a system that could become profitable in rural locations where PV systems are required.