High Efficiency PCS with Scan-Type MPPT Control for a Grid-Connected PV Power Generation System

Abstract

For a standalone PV (photovoltaic) power generation system, the author previously proposed a new MPPT (maximum power point tracking) control method in which the I-V characteristics are scanned with a detection interval control that operates at specified intervals and monitors the maximum power point. The author has obtained satisfactory results using this new MPPT control method. This paper investigates the application of the new MPPT control method for a PCS (power conditioning system) in a grid-connected type PV power generation system. The experimental results clearly demonstrate that the developed PCS offers outstanding effectiveness in tracking the maximum power point in partially shaded environments.