Maximum-power tracking of wind energy conversion systems based on fuzzy algorithms

Fuzzy logic is a convenient approach to construct maximum power-point tracking algorithms. A new scheme composed of two fuzzy systems is proposed here. The first fuzzy system is based on a modified hill climb search algorithm to conclude the power set-point. The second fuzzy system is an adaptive PI-like controller that uses a variable structure tuning algorithm to track the power set-point. Simulations show that the proposed scheme can improve the system efficiency.