In Fig. 7 the coef fi cient power function Cp and the TSR variablel of both controllers are shown.
In graphs a) and b),Cp and l of the BBS controller are shown, respectively.
It can be noted that they present small variations around their optimal points, and as it was stated before, small variations from the optimal point in the Cp function will bring small variations in the optimal power point.
Graphs c) and d) showCp and l of the SPB controller, respectively.
Big deviations from their optimal points can be seen.