Modeling and control of grid-connected photovoltaic energy conversion system used as a dispersed generator

Molina, Marcelo G.; Mercado, Pedro

doi:10.1109/tdc-la.2008.4641871

Cited by 59 publications

(30 citation statements)

References 5 publications

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“…A PV panel is composed by an array of PV cells grouped together in series to increase the output voltage (usually 12 or 24 V), or in parallel to increase the electrical current that the PV module can provide to the load Kim et al (2006), Molina & Mercado (2008). The traditional equivalent circuit of a solar cell is build by a photocurrent source I ph , a diode parallel to the source, a series resistor R s , and a shunt resistor R sh as shown in figure 2 Kim et al (2006), Xiao et al (2006).…”

Section: Pv Generatormentioning

confidence: 99%

“…Then, fuzzy controllers may be used to control the active and reactive power flow and assure the MPPT by matching the impedance seen from the DC-DC converter under environmental changes. The conversion stage is also composed by a step-up line-frequency coupling transformer and a low pass sine wave filter, designed to reduce the perturbation on the distribution system due to high-frequency switching harmonics generated by PWM control Xue et al (2004), Kjaer et al (2005), Molina & Mercado (2008).…”

Section: Invertermentioning

confidence: 99%

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Fuzzy Maximum Power Point Tracking Techniques Applied to a Grid-Connected Photovoltaic System

Diaz¹,

Hernández²,

Duarte³

2011

Fuzzy Controllers, Theory and Applications

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Section: Pv Generatormentioning

confidence: 99%

Section: Invertermentioning

confidence: 99%

Fuzzy Maximum Power Point Tracking Techniques Applied to a Grid-Connected Photovoltaic System

Diaz¹,

Hernández²,

Duarte³

2011

Fuzzy Controllers, Theory and Applications

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“…This trend is being increased due to the many benefits of using RES in distributed (also known as dispersed, embedded or decentralized) generation (DG) power systems [4][5]. These advantages include the favourable fiscal and regulatory incentives established in many countries that influence straightforwardly on the commercial acceptance of grid-connected PV systems.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Control of Grid-connected Solar Photovoltaic Systems

Molina¹

2016

Renewable Energy - Utilisation and System Integration

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At present, photovoltaic (PV) systems are taking a leading role as a solar-based renewable energy source (RES) because of their unique advantages. This trend is being increased especially in grid-connected applications because of the many benefits of using RESs in distributed generation (DG) systems. This new scenario imposes the requirement for an effective evaluation tool of grid-connected PV systems so as to predict accurately their dynamic performance under different operating conditions in order to make a comprehensive decision on the feasibility of incorporating this technology into the electric utility grid. This implies not only to identify the characteristics curves of PV modules or arrays, but also the dynamic behaviour of the electronic power conditioning system (PCS) for connecting to the utility grid. To this aim, this chapter discusses the full detailed modelling and the control design of a three-phase grid-connected photovoltaic generator (PVG). The PV array model allows predicting with high precision the I-V and P-V curves of the PV panels/arrays. Moreover, the control scheme is presented with capabilities of simultaneously and independently regulating both active and reactive power exchange with the electric grid. The modelling and control of the three-phase grid-connected PVG are implemented in the MATLAB/Simulink environment and validated by experimental tests.

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“…For grid connection and power injection (POI) to the utility grid of PV systems, the DC-DC converter and the DC-AC inverter are used. The general model of a PVG connection and POI to the utility grid was presented in [7][8][9]. In such works, the full controlling method used in the PVG generates maximum output power and can be operated as the proposed reactive power compensator.…”

Section: Introductionmentioning

confidence: 99%

“…In such works, the full controlling method used in the PVG generates maximum output power and can be operated as the proposed reactive power compensator. With the controller presented in [7][8][9], the output reactive and active power of a PVG can be controlled at the same time, such as in a conventional synchronous generator in the power system.…”

Section: Introductionmentioning

confidence: 99%

Multifunction converter based on Lyapunov function used in a photovoltaic system

Nguyen¹,

Luo²

2014

Turk J Elec Eng & Comp Sci

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Abstract:The development of distributed generations (DGs) is essential to help solve energy crises and improve the reliability of electricity supplies. However, the involvement of a DG in a grid along with an increase of the nonlinear load will reduce the power quality. To solve this problem, we want the converter used in the DG to work flexibly, intelligently, and more accurately. To contribute to the improvement of quality of the DG, this paper proposes a multifunction converter (MFC) model. With the proposed model, the photovoltaic generator, which can be operated at harmonic suppression, and the power injection are more flexible than in the conventional controller used in DG. The controller of the MFC, which is designed based on the Lyapunov function, always ensures the stability of the system. Simulations and experimental results are presented to validate the correctness and effectiveness of the proposed model.

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Modeling and control of grid-connected photovoltaic energy conversion system used as a dispersed generator

Cited by 59 publications

References 5 publications

Fuzzy Maximum Power Point Tracking Techniques Applied to a Grid-Connected Photovoltaic System

Fuzzy Maximum Power Point Tracking Techniques Applied to a Grid-Connected Photovoltaic System

Modelling and Control of Grid-connected Solar Photovoltaic Systems

Multifunction converter based on Lyapunov function used in a photovoltaic system

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