Advanced control strategies of SCIG based wind turbines for MPPT

Abstract

This paper presents performances analysis and comparison of the conventional and intelligent maximum power point tracking (MPPT) strategies based on the Hill climbing searching method. The conventional HCS is a non-linear, dynamic and modeless MPPT strategy. Its principle is based on perturbing the rotor speed and observing its results on output power. The intelligent MPPT is a modified version of the conventional HCS method. Its principle is based on fuzzy logic tool. The performances of the methods are compared based on the mechanical power exctratcted. Simulation of a small-scale wind turbine based on Squirrel Cage Induction Generator (SCIG) allows proving that the intelligent MPPT presents best performances compared to the conventional Hill Climbing Searching (HCS).