Renewable Energy Systems: Guest Editorial part II

Renewable energy systems have received renewed interest due to the rising price of conventional energies. Several aspects of renewable energy systems must be addressed in order to improve the energy harvest in terms of new power topologies, new control strategies, and maximum power point tracking. On the other hand, the connection of these systems to the grid presents a completely new research area where synchronization with distorted grid, detection of islanding, and the creation of microgrid and smart grid are key concepts. It is our pleasure to present this “Special Section on Renew- able Energy Systems—Part II of the IEEE TRANSACTIONS ON INDUSTRIAL E LECTRONICS .” The papers of the second part of the Special Section are classified by energy sources (wind, photovoltaic, hydro, etc.), grid-related issues (islanding, synchronization, microgrid, and smart grid), and converters for renewable energy sources.