PROJECT TITLE :

Sliding mode regulator for maximum power tracking and copper loss minimisation of a doubly fed induction generator

ABSTRACT:

Most power tracking and copper loss minimisation of a doubly fed induction generator (DFIG) can be achieved through the management of rotor currents. During this study, a sliding mode regulator (SMR) is presented to manage the rotor current of a DFIG. The aim of the SMR is to manage the rotor current to the target commands of maximum power tracking and copper loss minimisation with stator flux orientation. The robustness to parameter variations can be accomplished by the proposed SMR when the wind turbine is subject to changing wind speed. Simulation results of the DFIG system on a a pair of.5 MW generator are provided and compared with a fixed-gain proportional-integral (PI) regulator. It is observed from the simulation results that the dynamic responses achieved by the proposed SMR are additional sturdy than those by the fixed-gain PI regulator. The chattering impact caused by the switching function of the SMR can be reduced by an integral type SMR.