Modeling and maximum power point tracking (MPPT) method for PV array under partial shade conditions

Qi, Jun; Zhang, Youbing; Chen, Yi

doi:10.1016/j.renene.2013.12.018

Cited by 104 publications

(56 citation statements)

References 19 publications

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“…1, the electrical circuit model of PV/ PVT cells consists of a current source assembled in parallel with a diode. A series resistor and a parallel resistor are added to describe the dissipation phenomena inside PV/ PVT cells [17][18][19]. According to the equivalent circuit, the following expressions are established [20][21][22]:…”

Section: Circuit Model Of Pv/pvt Cells Mathematical Model Of Pv/pvt Mmentioning

confidence: 99%

Parameters identification of a photovoltaic module in a thermal system using meta-heuristic optimization methods

Bechouat

Younsi

Sedraoui

et al. 2017

Int J Energy Environ Eng

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Experimental studies confirm that the obtained electrical power by a conventional photovoltaic PV system is progressively degraded when the temperature of its cells is increased. The water-cooled photovoltaic thermal PVT system is therefore proposed to avoid the voltage drop at high temperature. The use of single diode PV/PVT models in simulation software becomes indispensable to analyze its performances where several climatic conditions such as environmental temperature and solar radiation variations should be considered. An optimal set of PV/PVT model parameters are determined through experimental data using two evolutionary computation algorithms; genetic algorithm and particle swarm optimization algorithm. Furthermore, the robustness of the given PV/PVT model should be analyzed. The predicted electrical properties by the proposed PVT model are compared with those given by the conventional PV model at its operating cell conditions and also at several rigid atmospheric conditions.

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Section: Circuit Model Of Pv/pvt Cells Mathematical Model Of Pv/pvt Mmentioning

confidence: 99%

Parameters identification of a photovoltaic module in a thermal system using meta-heuristic optimization methods

Bechouat

Younsi

Sedraoui

et al. 2017

Int J Energy Environ Eng

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“…In general, a solar module is divided into several (2-3) sub-modules connected in a series. An anti-diode is connected in parallel to a sub-module to bypass a sub-module wherein all or a number of the solar cells are shaded [5], [6]. Regardless of whether they are shaded or un-shaded, the solar cells of the bypassed sub-module do not produce power.…”

Section: Introductionmentioning

confidence: 99%

“…The output voltage and output power of the solar string are then reduced. Accordingly, the P-V curve of the solar cell array displays multiple peaks when shadowing occurs: one global maximum point and one or several local maximum power points [6].…”

Section: Introductionmentioning

confidence: 99%

Voltage Equalizing of Solar Modules for Shadowing Compensation

Jou¹,

Wu²,

Wu³

et al. 2017

Journal of Power Electronics

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This paper proposes a shadowing compensation method for the solar modules of grid-connected photovoltaic generation systems. The shadowing compensator (SC) implemented by the proposed shadowing compensation method is used only for the solar modules that can be shaded by predictable sources of shading. The proposed SC can simplify both the power circuit and the control circuit as well as improve power efficiency and utilizes a voltage equalizer configured by a modified multi-winding fly-back converter. The proposed SC harvests energy from the entire solar cell array to compensate for the shaded sub-modules of the solar cell array, producing near-identical voltages of all shaded and un-shaded sub-modules in the solar cell array. This setup prevents the formation of multiple peaks in the P-V curve under shaded conditions. Hardware prototypes are developed for the SCs implemented by the conventional and modified multi-winding fly-back converters, and their performance is verified through testing. The experimental results show that both SCs can overcome the multiple peaks in the P-V curve. The proposed SC is superior to the SC implemented by the conventional multi-winding fly-back converter.

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“…Multiple types of MPPT solutions are reported in the literature, which differ in complexity, number of sensors needed for operation, convergence speed, cost-effective range, etc. [7]. Two of the most commonly used MPPT techniques are Perturb and Observe (P & O) and Incremental Conductance (IC); the reason for this popularity is its implementation simplicity and its relatively good performance [4,8].…”

Section: Introductionmentioning

confidence: 99%

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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Modeling and maximum power point tracking (MPPT) method for PV array under partial shade conditions

Cited by 104 publications

References 19 publications

Parameters identification of a photovoltaic module in a thermal system using meta-heuristic optimization methods

Parameters identification of a photovoltaic module in a thermal system using meta-heuristic optimization methods

Voltage Equalizing of Solar Modules for Shadowing Compensation

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

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