PV-fed Dual-Stage Closed Loop V-f Control Scheme of Stand-Alone Microgrid

Abstract

With increasing energy requirements, the growing need for robustness in power processing units plays a significant role in monitoring maximum power besides sustaining system consistency. As microgrids rely on isolated renewable energy, fluctuations in load demand may have malignant effects on the system stability. A major portion of this paper describes a micro grid system that involves the incorporation of dual-stage conversion of PV power in standalone mode using the MPPT approach and offers a control strategy involving voltage-frequency (Vf) as the main parameters for delivering adequate pulses to the inverter via PWM. A computed model is simulated according to its physical equivalent using Matlab/Simulink. The effectiveness of this technique is further verified by the results.