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Nowadays, there are several difficulties are met in the selection of appropriate conditions, place of use, and purpose of photovoltaic (PV) systems. The reason is that electrical power output of PV system shows a non-linear variation, unlike other applications, depending on the internal resistance of electrical devices (loads) as well as radiation intensity and environmental temperature. Therefore,...
From the perspective of global warming suppression and depletion of energy resources, renewable energies, such as solar collector (SC) and photovoltaic generation (PV), are getting attention in distribution systems. Then, all electric houses with PV and HP are becoming widely used recently because of using time-of-day electricity rate system. If fixed battery can be introduced in the houses, the electricity...
This research is aimed to present technical loss analysis in Vientiane capital. Electricité du Laos (EDL), the state enterprise company that is responsible for transmission and distribution of electricity in Lao People's Democratic Republic (Lao PDR). The purposes of this research studies are technical line losses and reduce power losses of distribution in Vientiane capital by using CYMDIST program...
This paper proposes a new suboptimal reactive control technique for controlling single body heaving wave energy converter (WEC). A self-tunable fuzzy logic controller is implemented to maximize the absorbed energy while respecting the physical limitations of the device. Particle swarm optimization (PSO) algorithm is utilized to carry out an on-line optimization process of the fuzzy membership functions...
This paper presents the development of hydraulic performance in a high head Francis pump-turbine runner which is adopted at pumped storage power plant. In order to achieve the improvements of turbine efficiency, pump efficiency and cavitation performance for turbine and pump mode throughout a wide operating range, a new runner was designed by the latest Computational Fluid Dynamics (CFD) analysis...
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