Optimization of energy generation in wind farm through fuzzy control

Abstract

Wind farms are energy generation systems being autonomous and controllable generating units. At current technological status, each set turbine-generator-power converter should be considered as a unit. These units work as an individual system for variable speed systems. Variable speed wind systems demand for an appropriate control of operating point at different wind regimens as well they can operate at different rotational speed and, consequently, at different system efficiency. Control characteristics of each machine are based on associated power converter that implements control on power flow to the grid. In the paper, authors discuss the design of the controller for the wind farm. The approach is based on the development of a fuzzy controller for the entire farm. So an appropriate structure and rules of inference allow at optimizing the operation characteristics of the farm. The paper demonstrates the demanding for a whole wind farm controller and discusses some results carried out in the development of a fuzzy controller that optimizes total generated power of a wind farm, persecuting the goal of a good quality generated power.