Modeling and simulation of a microgrid consisting solar PV & DFIG based wind energy conversion system for St. Martin's island

Abstract

This paper presents modeling and simulation of an entirely renewable energy based microgrid in MATLAB/Simulink environment for a chosen sample number of population at St. Martin's Island in Bangladesh. The proposed microgrid system consists of Doubly-fed induction generator (DFIG) based wind turbine farm, solar PV array farm and AC loads. The wind turbine farm is interfaced to the microgrid along with PV farm while the PV array is connected via an inverter and a boost converter with a maximum power point tracking system. The microgrid system is tasked with meeting the peak load demand power and primary load demand power for the community, entirely from solar PV and wind farm, whereas in present the region is dependent on diesel generators for fulfilling electricity demand. The overall stability of the microgrid is maintained by employing a small portion of generation mean using redundant diesel generators to meet minimum power requirement of the community for a time being when it's acute and beyond favorable conditions to produce power from renewable energy sources. Finally, simulation study of the microgrid is carried out for various operating conditions and proposed microgrid's feasibility and functionality are observed as tasked earlier.