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access icon free Single-phase solar grid-interfaced system with active filtering using adaptive linear combiner filter-based control scheme

© The Institution of Engineering and Technology
Received 02/09/2016, Accepted 01/03/2017, Revised 06/02/2017, Published 24/03/2017

This study deals with a control scheme for single-stage solar photovoltaic (SPV) grid-interfaced system. The voltage-source inverter (VSI) is a power electronic interface between SPV array and the grid. The VSI provides power quality features, i.e. harmonics mitigation, power factor correction and perturb and observe maximum power point tracking for single-stage SPV grid-interfaced system. The SPV array supplies active power to the non-linear load and grid through VSI, during daytime only or when SPV generation is more than the load power. To increase the utilisation of VSI, it is used as an active power filter at night, to mitigate harmonics and to provide active power to the load from the utility grid. The proposed adaptive linear combiner filter has the capability to extract harmonics and enhances the power quality in SPV grid-interfaced system. It has also satisfied an IEEE-519 standard of harmonics by improving the quality of power of SPV grid-integrated system. Simulation results of the SPV system are presented, which are simulated using MATLAB and response of system under non-linear load and varying environmental condition are also studied experimentally on a developed prototype in the laboratory.

Inspec keywords: solar cells; maximum power point trackers; invertors; power filters

Other keywords: single-stage solar photovoltaic grid-interfaced system; adaptive linear combiner filter-based control scheme; IEEE-519 standard; MATLAB; active filtering; maximum power point tracking; power electronic interface; single-phase solar grid-interfaced system; voltage-source inverter

Subjects: Power electronics, supply and supervisory circuits; Filters and other networks

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