Browsing by Author "Ramli, Makbul A.M."

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    Analysis of renewable energy feed-in tariffs in selected regions of the globe: Lessons for Saudi Arabia
    (Renewable and sustainable energy reviews, 2015) Ramli, Makbul A.M.; Twaha, Ssennoga
    In this paper,an analysis of renewable energy feed-in tariffs (REFIT) for the selected regions of the globe is done with the aim of drawing lesson for Saudi Arabia .A brief background and status of renewable energy sources(RES) utilization in Saudi Arabia is given at the beginning of this paper, followed by a review of the feed-in tariff(FIT) design models reported in literature. The application of the policy in Europe, the United States, Australia, Asia and Africa is then reviewed. Some observations from the analysis oft he FIT application in different countries have been discussed and finally,lessons have been drawn from the study. Some policy recommendations have been given for Saudi Arabia. The analysis of the lessons identified shows that the application of FIT scheme in Saudi Arabia is likely to speed up the development of renewable energy resources within the area.
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    Economic analysis of PV/diesel hybrid system with flywheel energy storage
    (Renewable Energy, 2015) Ramli, Makbul A.M.; Ayong, Hiendro; Ssennoga, Twaha
    This paper analyzes a hybrid energy system performance with photovoltaic (PV) and diesel systems as the energy sources. The hybrid energy system is equipped with flywheel to store excess energy from the PV. HOMER software was employed to study the economic and environmental benefits of the system with flywheels energy storage for Makkah, Saudi Arabia. The analysis focused on the impact of utilizing flywheel on power generation, energy cost, and net present cost for certain configurations of hybrid system. Analyses on fuel consumption and carbon emission reductions for the system configurations were also presented in this paper.
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    A review on maximum power point tracking for photovoltaic systems with and without shading conditions
    (Renewable and Sustainable Energy Reviews, 2017) Ramli, Makbul A.M.; Twaha, Ssennoga; Ishaque, Kashif; Al-Turki, YusufA.
    This paper discusses maximum power point tracking(MPPT) methods of PV system for normal and partial shading conditions(PSC).The selected MPPT methods were classified as artificial intelligent, hybrid, and other MPPT methods.The comparison of researches on MPPT methods under normal condition and PSC reveals that researchers have concentrated more on shading conditions since the last few years mainly due to the need of power out put and efficiency improvements. It is believed that the information contained in this piece of work will be of great use for the researchers in the field under consideration.