Grid-tied photovoltaic system based on PSO MPPT technique with active power line conditioning

• Published in: IET power electronics Vol. 9; no. 6; pp. 1180 - 1191
• Main Authors: de Oliveira, Fernando M, Oliveira da Silva, Sérgio A, Durand, Fábio R, Sampaio, Leonardo P, Bacon, Vinícius D, Campanhol, Leonardo B.G
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 18.05.2016
• Subjects: active power line conditioning; Algorithms; current generator algorithm; Data buses; DC‐bus controller; Generators; grid‐tied inverter; harmonic currents suppression; Inverters; invertors; Maximum power; maximum power point trackers; MPPT; particle swarm optimisation; Photovoltaic cells; photovoltaic power systems; power cables; power grids; PSO; reactive power compensation; reactive power control; Shading; single‐phase grid‐tied photovoltaic system; Solar cells; DC-bus controller; MPPT; particle swarm optimisation; single-phase grid-tied photovoltaic system; photovoltaic power systems; current generator algorithm; reactive power compensation; PSO; maximum power point trackers; invertors; active power line conditioning; grid-tied inverter; harmonic currents suppression; power cables; reactive power control; power grids
• ISSN: 1755-4535; 1755-4543
• DOI: 10.1049/iet-pel.2015.0655

This study presents a single-phase grid-tied photovoltaic (PV) system based on a global maximum power point tracking (MPPT) technique, which is performed by means of the particle swarm optimisation (PSO) method. The PSO-based MPPT technique is employed to solve problems related to mismatching phenomena, such as partial shading, in which the PV arrays are commonly submitted. Considering the search of the global maximum power point under partial shading, the effectiveness of the PSO-based MPPT technique is highlighted when compared with the well-known perturb and observe MPPT technique, since both the mentioned MPPT techniques are used to determine the dc-bus voltage reference to ensure a proper grid-tied inverter operation. A current generator algorithm based on a synchronous reference frame is proposed, which operates in conjunction with a dc-bus controller and MPPT algorithms, computing the reference current of the grid-tied inverter. In addition, the current generator controls the energy processed by the PV system to avoid over power rating of the grid-tied inverter, since the active power injection into the grid, reactive power compensation and harmonic currents suppression are carried out simultaneously. The performance and feasibility of the grid-tied PV system are evaluated by means of simulation and experimental results.