A model-based implementation of an MPPT technique and a control system for a variable speed wind turbine PMSG

Abstract

This paper proposes a model-based control system for a wind energy conversion system (WECS) using a direct driven permanent magnet synchronous generator (D-PMSG). The generator is connected to the grid via a back-to-back pulse-width modulation (PWM) converter with a switching frequency of 10 kHz. The integrated system model is developed in MATLAB/Simulink and is based on the practical setup parameters to fully and accurately mimic the behaviour of the experimental system. A PI controller provides the generator with an optimum speed via an aerodynamic model of the wind turbine and can be readily employed for the practical setup using the designed parameters in the simulation model. A maximum power point tracking (MPPT) algorithm is further developed to ensure the maximum power is captured from a wind turbine. The MPPT algorithm is simplified to reduce the computational time required for the real-time simulation.