REVIEW OF MODEL BASED PREDICTIVE CONTROL STRATEGY FOR PERMANENT MAGNET SYNCHRONOUS GENERATOR BASED WIND TURBINE SYSTEM

Abstract

This review paper reviews a Model Predictive Control (MPC) strategy for Permanent Magnet
Synchronous Generator (PMSG) based Variable Speed-Wind Energy Conversion System (VS-WECS). For
extraction of maximum power from wind turbine, a 3-ϕ back-to-back (BTB) converter is used to tie PMSG and grid
with L-filter. Control algorithm is applied to Machine side Converter (MSC) to obtain the maximum power from the
WECS. Similarly, Control algorithm is applied to Grid side Converter (GSC) to obtain dc-link voltage regulation.
Model of variable-speed WECS having directly driven PMSG is developed in MATLAB/ SIMULINK
environment. Good dynamic performance of WESC under wind speed variation is achieved using MPC. Validation
of the effectiveness of proposed control approach is seen in MATLAB enviournment.
MPC controlled model of the converter based WECS allows foreseeing the predicted behavior of the
controlled variables. This allows selection of the voltage vector that leads to minimization of error, by minimizing a
predefined cost function to produce firing pulse for running of convertors. The robustness of system alongwith low
current THD is main feature of proposed scheme. Simulation results in Matlab-Simulink software environment gives
out the performances of the Model Predictive control strategy.