Maximum power point tracking of wind power systems via fast terminal sliding mode control

This paper presents the maximum power point tracking (MPPT) design for wind power generating systems via fast terminal sliding mode control. In the system, a boost converter is applied to adjust the extracted power of the wind power generator. To obtain the maximum power from the wind energy, the FTSMC based MPPT controller is designed to directly regulate the DC rectified voltage of the generator to the maximum power point voltage. Then, finite-time convergence stability is guaranteed under uncertainties, disturbance, and rapidly changing wind speed. Moreover, the control law does not have singular problems as traditional FTSMC. Compared with traditional MPPT methods, this paper removes the use of the wind speed, the generator dynamics, maximum power operational point searching, and torque feedback. Meanwhile, strict stability analysis is done. In addition, the satisfactory performance is shown from the simulation results.