Abstract
This study deals with the control and implementation of a dual converter-based grid-tied three-phase solar photovoltaic (SPV) system with series and shunt compensation capabilities. The SPV system consists of two back-to-back-connected voltage-source converters, namely neutral and shunt converters. The purpose of neutral converter is to provide voltage compensation services. The neutral converter does not use any series transformer to provide voltage compensation and makes use of the distribution transformer available at the site. The shunt converter delivers the solar power to the utility grid and the local loads. Moreover, the shunt converter provides the compensation of harmonic and reactive currents generated by the local loads. A new harmonics detection method and control algorithm are developed using adaptive noise suppression-based adaptive filters and implemented for the control of dual converter-based SPV system. The performance and efficacy of the dual converter-based SPV system and its control are demonstrated using MATLAB-based simulations and hardware-in-the-loop-based experiments.
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