Optimization of a photovoltaic pumping system based on the optimal control theory

Betka, Achour; Attali, A.

doi:10.1016/j.solener.2010.04.004

Cited by 47 publications

(32 citation statements)

References 13 publications

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“…Photovoltaic generators are neither voltage nor current source but can be approximated as current generators with dependent voltage sources [26], where the I-V characteristic can be expressed via the famous four parameters I-V equation:…”

Section: Pv Side Controlmentioning

confidence: 99%

Fuzzy-predictive direct power control implementation of a grid connected photovoltaic system, associated with an active power filter

Ouchen

Betka

Abdeddaim

et al. 2016

Energy Conversion and Management

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Section: Pv Side Controlmentioning

confidence: 99%

Fuzzy-predictive direct power control implementation of a grid connected photovoltaic system, associated with an active power filter

Ouchen

Betka

Abdeddaim

et al. 2016

Energy Conversion and Management

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“…I m value will depend on the frequency inverter as well as on the PV peak power. Betka and Attali [6] proposed I m values around 250 W m À2 while Amer and Younes [4] estimated around 500 W m À2 for their facilities values. The value of I m should be lower for higher PP values as the final power threshold can be achieved with less irradiance.…”

Section: Pv Array Subsystemmentioning

confidence: 97%

“…In this work, the irradiance, I(t), is estimated as a function of time by means of Equation (6). It comes from a general model, which is valid for any tilt angle (0<4 <p/2), and considers an isotropic distribution of the diffuse radiation [17].…”

Section: Pv Array Subsystemmentioning

confidence: 99%

Feasibility analysis of a standalone direct pumping photovoltaic system for irrigation in Mediterranean greenhouses

et al. 2016

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a b s t r a c tThe profitability of photovoltaic (PV) systems for irrigating Mediterranean greenhouse crops is analyzed. A standalone direct pumping PV system is proposed. A simulation model of the system was developed in order to obtain the economically optimal design of this system and evaluate its feasibility. The model is composed of several submodels: the photovoltaic power generation capacity submodel, the direct pumping management submodel and the submodel that evaluates the irrigation water requirements for a representative greenhouse and the overall economic performance of the system.The effect of the total number of irrigation sectors per hectare on the performance of the system has been analyzed. Two management strategies have been considered: to irrigate with only one irrigation sector simultaneously or to irrigate with a variable number of irrigation sectors as a function of the incoming power provided by the PV array. The optimal operation strategy provided by the model was the first one as the second was penalized by the higher cost of the pumps. The system becomes profitable for at least 4 sectors per hectare. The profitability and energy use efficiency of this type of systems are relatively low, although these values could be improved if the excess of energy were used for other purposes, such as ventilating or cooling the greenhouse.

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“…The two equation sets (6,7) and (8,9) are weighted by the duty ratio α and added to get the average state space model of the converter [15] …”

Section: Dc-dc Converter Modelmentioning

confidence: 99%

Implementation of fuzzy-sliding mode based control of a grid connected photovoltaic system

et al. 2015

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Optimization of a photovoltaic pumping system based on the optimal control theory

Cited by 47 publications

References 13 publications

Fuzzy-predictive direct power control implementation of a grid connected photovoltaic system, associated with an active power filter

Fuzzy-predictive direct power control implementation of a grid connected photovoltaic system, associated with an active power filter

Feasibility analysis of a standalone direct pumping photovoltaic system for irrigation in Mediterranean greenhouses

Implementation of fuzzy-sliding mode based control of a grid connected photovoltaic system

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