Optimization of Perturbative PV MPPT Methods Through Online System Identification

Manganiello, Patrizio; Ricco, Mattia; Petrone, G.; Monmasson, Éric; Spagnuolo, G.

doi:10.1109/tie.2014.2317143

Cited by 69 publications

(51 citation statements)

References 16 publications

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“…The former strongly affects the short-circuit current, the latter the open-circuit voltage, and both of them affect the maximum power point (MPP). Therefore, any reliable model of a PV system must take into account these parameters for any type of investigation: monitoring of the performance [1], forecasting of the produced power [2], development and testing of maximum power point tracking algorithms [3], and so on. A reliable model is also needed to study defective PV cells [4].…”

Section: Introductionmentioning

confidence: 99%

A Complete and Simplified Datasheet-Based Model of PV Cells in Variable Environmental Conditions for Circuit Simulation

Vergura

2016

Energies

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Abstract:The paper proposes two mathematical models of a photo-voltaic (PV) cell-the complete model and the simplified model-which can be used also for modeling a PV module or a PV string under any environmental condition. Both of them are based on the well-known five-parameters model, while the approach allows to write a new descriptive equation, whose terms are functions of the information always available in the modern datasheet of a PV module's manufacturer. This implies that no pre-processing of the datasheet parameters is needed to use the proposed model, whichever the solar irradiance and the cell/module temperature are. Moreover, these models are interpreted from a circuital point of view, providing the electrical circuits constituted only by basic electrical components. Particularly, in order to take into account the variability of the environment parameters, several variable resistors and voltage-controlled sources are used. The proposed models are tested with the datasheet parameters of commercial PV modules.

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Section: Introductionmentioning

confidence: 99%

A Complete and Simplified Datasheet-Based Model of PV Cells in Variable Environmental Conditions for Circuit Simulation

Vergura

2016

Energies

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“…The scheme includes a voltage source as the system load, this to model the DC-link of double-stage structures in commercial PV inverters, in which the DC/AC stage regulates the DC-link voltage (C b capacitor voltage) [25]. This voltage source model is widely used to represent the closed-loop grid-connected inverters due to its satisfactory relation between accuracy and simplicity, which is confirmed in references [3,17,[25][26][27][28][29].…”

Section: System Modelmentioning

confidence: 85%

Sliding-Mode Controller for Maximum Power Point Tracking in Grid-Connected Photovoltaic Systems

Valencia

Ramos‐Paja

2015

Energies

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Abstract:The maximum power point tracking (MPPT) of photovoltaic systems must be as fast and accurate as possible to increase the power production, which eventually increases the PV system profitability. This paper proposes and mathematically analyses a sliding-mode controller to provide a fast and accurate maximum power point tracking in grid-connected photovoltaic systems using a single control stage. This approach avoids the circular dependency in the design of classical cascade controllers used to optimize the photovoltaic system operation, and at the same time, it reduces the number of controllers and avoids the use of linearized models to provide global stability in all the operation range. Such a compact solution also reduces the system cost and implementation complexity. To ensure the stability of the proposed solution, detailed mathematical analyses are performed to demonstrate the fulfillment of the transversality, reachability and equivalent control conditions. Finally, the performance of the proposed solution is validated using detailed simulations, executed in the power electronics simulator PSIM, accounting for both environmental and load perturbations.

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“…Such a model is mainly adopted to reproduce the electrical I-V curve of the PV source, and in general, it operates offline with respect to the system under investigation. The SDM is also useful in online applications such as model-based maximum power point tracking (MPPT) and monitoring/diagnosis operation [1][2][3][4]. The five parameters (I ph , I s , η, R s , R h ) appearing in (1), which is the equation underlying the SDM, are usually calculated by using datasheet information, or experimental data, or a combination of them.…”

Section: Introductionmentioning

confidence: 99%

“…The SDM is also useful in online applications such as model-based maximum power point tracking (MPPT) and monitoring/diagnosis operation [1][2][3][4]. The five parameters (I ph , I s , η, R s , R h ) appearing in (1), which is the equation underlying the SDM, are usually calculated by using datasheet information, or experimental data, or a combination of them. Due to the strong nonlinearity and the involved implicit relationships, the calculation of the SDM parameters is a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Online Identification of Photovoltaic Source Parameters by Using a Genetic Algorithm

et al. 2017

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Abstract:In this paper, an efficient method for the online identification of the photovoltaic single-diode model parameters is proposed. The combination of a genetic algorithm with explicit equations allows obtaining precise results without the direct measurement of short circuit current and open circuit voltage that is typically used in offline identification methods. Since the proposed method requires only voltage and current values close to the maximum power point, it can be easily integrated into any photovoltaic system, and it operates online without compromising the power production. The proposed approach has been implemented and tested on an embedded system, and it exhibits a good performance for monitoring/diagnosis applications.

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Optimization of Perturbative PV MPPT Methods Through Online System Identification

Cited by 69 publications

References 16 publications

A Complete and Simplified Datasheet-Based Model of PV Cells in Variable Environmental Conditions for Circuit Simulation

A Complete and Simplified Datasheet-Based Model of PV Cells in Variable Environmental Conditions for Circuit Simulation

Sliding-Mode Controller for Maximum Power Point Tracking in Grid-Connected Photovoltaic Systems

Online Identification of Photovoltaic Source Parameters by Using a Genetic Algorithm

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