Browsing by Author "Yaiche, Mohamed Rédha"

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    The impact of PV array inclination on the PV inverter reliability and lifetime
    (IEEE, 2020) Bouguerra, Sara; Agroui, Kamel; Yaiche, Mohamed Rédha; Sangwongwanich, Ariya; Blaabjerg, Frede
    The PV inverter lifetime is affected by mission profiles, which include the solar irradiance and ambient temperature of the installation site. In many investigations, the design for reliability approach (DFR) is used to evaluate the reliability of the PV inverter, where the solar irradiances are measured on a certain tilt and orientation angle. In most cases, the tilt is chosen to be the latitude angle of the location or slightly less. However, the latitude angle is not always the best choice in terms of energy and inverter degradation. This paper evaluates the lifetime of the PV inverter for different tilt angles of PV panels. The evaluation is based on the mission profiles of Algiers, Algeria, and the impact of tilt angle on the energy production and reliability of the PV inverter is investigated using mission profile based lifetime estimation
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    Modeling the Effect of PV Module Orientation on the Encapsulant Browning Degradation Rate in Algeria Region
    (IEEE, 2022) Bouguerra, Sara; Agroui, Kamel; Kaaya, Ismail; Bouraiou, Ahmed; Yaiche, Mohamed Rédha; Mansour, Djamel Eddine
    The encapsulant browning degradation mode of photovoltaic (PV) modules is affected by ultraviolet irradiance, ambient temperature, and humidity of the installation site. In this article, the degradation rate for encapsulant browning, measured by short-circuit current degradation, is estimated for different PV module tilt and orientation angles in the Algiers region, characterized by a temperate climate. The activation energy for encapsulant browning is calculated using the acceleration factor modeling of the field-to-field degradation and physical models, in conjunction with the meteorological data of two locations in Algeria, where the same module type is fielded for 9–10 years. The tradeoff between the PV energy production and the PV module lifetime is carried out for different PV module positioning, assuming that encapsulant browning is the main failure mechanism experienced in the field. The results reveal that the orientation angle affects the PV module lifetime, where orienting the PV module from east to west increases the lifetime up to 30%, and the lifetime energy production up to 6%, due to reduced degradation. It is also presumed that although the Saharan region of Adrar receives more UV light and ambient temperatures throughout the year in Algeria, the PV modules fielded in the Mediterranean region of Algiers suffer higher degradation, which is explained by the high humidity experienced in Algiers that accelerates the encapsulant browning failure mechanism.