Implementation of a Low-Cost Single-Phase Grid-Connected Photovoltaic System with Active Power Filtering Mechanism

Arckarakit Chaithanakulwat; Vijit Kinnares

doi:10.15866/iree.v12i2.11383

Implementation of a Low-Cost Single-Phase Grid-Connected Photovoltaic System with Active Power Filtering Mechanism

Arckarakit Chaithanakulwat^(1*), Vijit Kinnares⁽²⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/iree.v12i2.11383

Abstract

This research is concerned with the implementation of a low-cost single-phase grid connected PV system including active power filtering functionality. The system is able to transfer surplus power to the grid, to compensate both reactive power and harmonics for nonlinear loads resulting in nearly unity power factor and nearly sinusoidal grid current. The system is controlled by a low cost dSPIC30F4011 microcontroller. Rectification and inversion mode operation is described. Software and hardware design of the system is given. The merit of the proposed system is simplicity especially for grid synchronization using zero crossing in conjunction with a sinusoidal look-up table. The process of reference current generation is fully described and demonstrated by experimental waveforms. Simulation and experimental results are compared in order to validate the proposed technique under various conditions such as low and high solar irradiation.
Copyright © 2017 Praise Worthy Prize - All rights reserved.

Keywords

Active Filters; Nonlinear Filters; Current Control; Voltage Control; Power Quality

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