Journal of System Simulation ›› 2018, Vol. 30 ›› Issue (3): 1109-1117.doi: 10.16182/j.issn1004731x.joss.201803043

Previous Articles     Next Articles

A MPPT Control Method of Wind Turbines with Nonsingular and Fast Terminal Sliding Mode

Li Dazhong, Wu Feng   

  1. Department of Automation, North China Electric Power University, Baoding 071003, China
  • Received:2016-03-07 Online:2018-03-08 Published:2019-01-02

Abstract: In order to improve the energy capture efficiency of doubly-fed induction generator (DFIG), a control method is designed based on direct speed control (DSC) to achieve maximum power point tracking (MPPT). An effective wind speed estimator based on high-degree cubature Kalman filter (HCKF) and Newton-Raphson method (NR) is proposed for solving the difficulty in obtaining effective wind speed using traditional control strategy. A speed controller based on nonsingular fast terminal sliding mode surface is designed to obtain a faster speed response for the speed loop. The numerical simulation research of the 2.4MW wind turbine under rapidly variable wind conditions is carried out. The simulation results show that the improved control method can estimate the effective wind speed accurately and achieve better MPPT compared with the traditional control strategy.

Key words: wind turbine, MPPT, high-degree cubature Kalman filter, nonsingular fast terminal sliding mode control

CLC Number: