LAUSR

Renewable energy resources, such as wind, wave and solar, have become and will continue to be an important source for power generation worldwide. The global renewable energy electric power capacity has increased to 1849 GW (including hydro) in 2015, which was estimated to be 23.7% of the global electricity production. In 2015, the G7 and G20 governments agreed to accelerate the development of renewable energy. Power electronic technologies (such as various converters and inverters) are often used to integrate renewable energy generators into the power grid. In these renewable energy generation systems, control systems are employed to guarantee various system performances such as optimal power generation, mechanical load reduction, vibration suppression, reduction of losses in AC/DC/AC conversion, suppression of unwanted current harmonics, system stability and fault ride-through, load sharing, etc. Thus, it is clear that control theory and technology plays a central role in the generation of renewable energy. Given the demand, it is unsurprising that this area has attracted the attention of many control systems researchers. The main aim of this special issue is to provide the latest results inmany of themain areas of current research and to provide pointers to open research problems. Particular topics addressed include the control of wind turbines, control of marine wave energy converters, control of solar power systems, control of switched power converters for renewable energy and the grid integration of renewable energy. Following is a brief introduction for the papers in this special issue: