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Development of a voltage regulator for solar photovoltaic cathodic protection system

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The voltage regulator is one of the main elements from which depends the reliability and the efficiency of the photovoltaic system. Among the large number photovoltaic applications, we are interested by the cathodic protection, it’s recognized as one of the most efficacious means of the active prevention against the corrosion. Photovoltaic cathodic protection is one of the possible solutions for the structures subjected to corrosion, mainly in oil and gas industries [Tanasescu et al., 1988]. In this paper, the study about the design of a voltage regulator with variable output for solar photovoltaic cathodic protection has been carried out. Our system is based on two microcontroller controlled DC/DC converters: the first one is a buck used to match the maximum power point voltage of the solar panel to the battery charging voltage; and the second one is a buck-boost used between the batteries and the load in order to adapt the regulator at any cases of the cathodic protection stations. Usually, cathodic protection systems are working with constant current output which is the necessary condition to procure immunity voltage of the structures that strictly required preventing corrosion from occurring. The major difficulty to achieve this goal is the variations of the surrounding medium resistivity to overcome this difficulty, we propose an automatically adjustment of the output voltage of the buck-boost converter to feed the load (sacrificial anode-protected structure) thanks to the microcontroller by generating the required duty cycle by way of its PWM output. The developed system allows the solar panel to operate at its maximum power point output (MPP), when the MPP changes, the microcontroller changes the conversion ratio (duty cycle) of the buck circuit to keep the solar panel at its MPP. The buck steps higher voltage panel down to the battery charging voltage. In this paper, the study about the design of this voltage regulator with variable output for solar photovoltaic cathodic protection has been described.

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https://revue.cder.dz/index.php/rer/article/view/835

10.54966/jreen.v9i4.835

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Renewable Energy Development Center

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https://revue.cder.dz/index.php/rer/article/view/835/1829

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Copyright (c) 2021 Home

https://creativecommons.org/licenses/by-sa/4.0

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Journal of Renewable Energies; Vol. 9 No. 4 (2006): Volume 9 (Regular); 259 - 266

Journal of Renewable Energies; Vol. 9 No 4 (2006): Volume 9 (Regular); 259 - 266

10.54966/jreen.v9i4

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Photovoltaic system

Cathodic protection

Buck-boost converter

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Development of a voltage regulator for solar photovoltaic cathodic protection system الحذف في الجملة القرآنية موقف الجزائريين من الاحتلال الإيطالي لليبيا وضعية المرأة من المظور التاريخي الإجتماعي رؤية نقدية لأهم الاتجاهات

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