Simulation, design and test of an efficient power optimizer using DC-DC interleaved isolated boost PV-micro inverter application

The photovoltaic solar energy is as well promising as other renewable energies, much research and development are underway, to improve the performance of the technologies used in this field. These improvements are made at the same level of PV modules manufacturing. But the PV systems are less efficient because of the climatic conditions that alter their performance. For this reasons, the ‘MLPEs’ (Module-Level Power Electronics) include as a solution, not only to make a good harvest of the maximum power delivered by the PV, but also to adapt the DC output of the PV to the load or the grid voltage. The PV modules have generally a power up to 500W. Each PV module integrates its power optimizer or micro inverter that makes it more effective. The use of the multiple modules allows having a greater power if it is needed. This paper presents several results of the simulation, design and test of an efficient power optimizer using a DC-DC interleaved isolated boost. It focuses on the optimization of DC/DC converter performances and its physical dimensions, and presents an efficient method to track the maximum power point and the load regulation. For this purpose, a specific architecture and design of a high-reliable, robust, stable and miniaturized system are proposed.