Design and analysis of a Microgrid with a PMBLDC generator based WECS and Solar-PV with decoupled real and reactive power control strategy

Abstract

This paper presents the design of a micro-grid with permanent magnet brushless DC (PMBLDC) generator based wind energy conversion system (WECS) and Solar PV along with stand-alone loads. The output of the PMBLDC is converted to a controlled DC bus voltage using a PWM rectifier through which independent real and reactive power control are achieved. This DC bus is common to both solar PV and WECS. A Simulink model for the Solar PV Array is created and the output voltage is regulated to match up to the DC bus voltage using a DC-DC converter. A Hysteresis band pulse width modulation technique sends gating signals to the devices of the common inverter, which controls real and reactive powers and thereby achieving power factor control at the grid/load end. The entire system is modelled and simulated in MATLAB/Simulink environment. The presented results demonstrate the excellent performance of the micro-grid under different operating conditions.