Power quality improvement of microgrid with cascaded controller-based PMSG used in wind turbines

Abstract

Due to increasing power demand and environmental aspects, power generation from renewable energy sources that have been assumed to be a different source of energy can bring new challenges. Globally, an increasing number of wind energy generation systems are integrated into the electrical power network. In the wind turbine the reduction of various negative impacts of power quality issues such as voltage sag, swell, power variation, voltage and current harmonics are noticeable. In this paper, permanent magnet synchronous generator is operated as a parallel connection of reactive power compensator. Also, the cascaded controller technique is analyzed with the performance of compensator. The whole system is simulated through the MATLAB/SIMULINK using Simpower system library. The simulations give the improvement of inverter phase and load voltage profile, reduce the voltage harmonics in the inverter voltage control and compensate the current-injected active/reactive power operation in grid-connected wind energy system.