Modeling, Control and Validation of a Three-Phase Single-Stage Photovoltaic System

Eubis Pereira Machado (), Adeon Cecílio Pinto, Rodrigo Pereira Ramos, Ricardo Menezes Prates, Jadsonlee da Silva Sá, Joaquim Isídio de Lima, Flávio Bezerra Costa, Damásio Fernandes and Alex Coutinho Pereira
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Eubis Pereira Machado: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Adeon Cecílio Pinto: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Rodrigo Pereira Ramos: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Ricardo Menezes Prates: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Jadsonlee da Silva Sá: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Joaquim Isídio de Lima: Collegiate of Electrical Engineering, Federal University of Vale do São Francisco, Av. Antônio Carlos Magalhães, 510, Santo Antônio, Juazeiro 48902-300, BA, Brazil
Flávio Bezerra Costa: Electrical and Computer Engineering Department, Michigan Technological University, Houghton, MI 49931, USA
Damásio Fernandes: Department of Electrical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
Alex Coutinho Pereira: Companhia Hidro Elétrica do São Francisco (CHESF), Recife 50761-901, PE, Brazil

Energies, 2024, vol. 17, issue 23, 1-22

Abstract: The central inverter topology presents some advantages such as simplicity, low cost and high conversion efficiency, being the first option for interfacing photovoltaic mini-generation, whose shading and panel orientation studies are evaluated in the project planning phase. When it uses only one power converter, its control structures must ensure synchronization with the grid, tracking the maximum power generation point, appropriate power quality indices, and control of the active and reactive power injected into the grid. This work develops and contributes to mathematical models, the principles of formation of control structures, the decoupling process of the control loops, the treatment of nonlinearities, and the tuning of the controllers of a single-stage photovoltaic system that is integrated into the electrical grid through a three-phase voltage source inverter. Using the parameters and configurations of an actual inverter installed at the power plant CRESP (Reference Center for Solar Energy of Petrolina), mathematical modeling, implementation, and computational simulations were conducted in the time domain using MatLab ® software (R2021b). The results of the currents injected into the grid, voltages, active powers, and power factor at the connection point with the grid are presented, analyzed, and compared with real measurement data during one day of operation.

Keywords: photovoltaic; voltage source inverter; current control; DC-link control; small-signal model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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