Synthesis and high-performance analysis of Synergetic control MPPT for PMSG-based Wind Energy Conversion Systems

Classical control laws give good results in the case of linear systems with constant parameters. For nonlinear systems or systems having non constant parameters, these classical control laws may be insufficient because they are not robust. In this case, it is necessary to use control laws that are insensitive to variations in parameters, disturbances and non-linearity, among the nonlinear control we find synergetic control. This paper describes a new approach synergetic control applied on wind energy conversion systems. This latter is mainly composed of a three-blade horizontal wind turbine, Permanent Magnet Synchronous Generator (PMSG) and rectifier PWM. The aim of this paper is to optimize the extracted energy from the wind by using a New approach based on the theory of synergetic control in order to achieve a maximum power point tracking (MPPT) of a wind energy conversion system with variable speed and with fixed pitch angle. The closed-loop system stability is guaranteed using Lyapunov's method. Vector control is applied to the Permanent Magnet Synchronous Generator PMSG. Compared to the Sliding Mode Control SMC, the simulation results show good performance of this new approach.