The project is within the framework of power electronics applications for photovoltaic (PV) energy systems, which play a key role in the generation and storage of carbon-free energy.The main objective of the project is the development of new, smart PV modules, enhanced thanks to the intelligent useof power electronics devices. These power electronics devices replace bypass diodes and allow differential power processing between submodules (or substrings) in order to mitigate mismatch effects due to partial shading, soiling, temperature gradients, manufacturing tolerances and ageing. As a result, the proposed smart PV modules will be virtually immune to mismatch and will be able to operate during more years. This will increase the energy yield of PV systems, while decreasing cost and easing the operation of downstream power electronics.The proposal focuses (i) on the development of a comprehensive cell-level simulation tool for the prediction and evaluation of the advantages of the new PV modules and their optimal design, and (ii), on the high-power density realization of the power electronic devices, considering the results of objective (i).