Study of conventional control algorithms for PV-based grid-connected microgrid

Abstract

This paper evaluates four conventional algorithms of determining the compensating current for a PV inverter used for integrating PV array with grid. The algorithms studied are synchronous reference frame (SRF) theory, unit template, instantaneous reactive power (IRP) theory, and conductance Fryze. The system has been modeled and implemented in MATLAB along with Simulink toolbox. Simulation results of the performance of four algorithms are presented and analyzed for control of power flow and harmonics reduction in PV-based grid-connected microgrid system.