Contents I. Introduction
One important aspect of wind turbine applications, especially in an industrial environment, is that wind turbines generate electricity without creating pollution. Power systems based on renewable sources are affected by fluctuations on the generation side due to the seasonal and random nature of the energy resource [1], [2]. At the same time, the loads have also variable power demand. In this case, energy storage systems (batteries, fly-wheels, and so on) play an important role in matching up generation and demand.
