Results 31 to 40 of about 11,258 (307)
Research on control system for improving the grid-connected efficiency of small hydropower
Energy Reports, 2023 Aiming at the problem of low efficiency at low flow in small hydropower stations, a permanent magnet direct-drive hydropower generation control system based on dual PWM converters is proposed to realize wide-range variable-speed constant-frequency ...
Xingyang Hu +4 more
doaj +1 more source
Assessing small hydropower sites in Nigeria for sustainable development using ArcGIS
Energy Reports, 2023 This paper focuses on the prospects of small hydropower plants (SHP) in Nigeria and utilizes ArcGIS software for analyzing the country’s hydropower energy potential.
Benneth Oyinna +7 more
doaj +1 more source
Adjustable speed operation of a hydropower plant associated to an irrigation reservoir
, 2008 This paper deals with the issue of adjustable speed operation (ASO) of hydropower plants. The main idea of this technique is to allow the turbine speed to change in accordance with hydraulic conditions, thus improving the overall unit efficiency. General
Wilhelmi Ayza, José-Román +2 more
core +2 more sources
Dynamic Equivalent Modeling for Small and Medium Hydropower Generator Group Based on Measurements
Energies, 2016 At present, the common practice in the power system of China is to represent the small and medium hydropower generator group as a negative load. This paper presents a method to build a dynamic equivalent model of the hydropower generator group using a ...
Bowei Hu +4 more
doaj +1 more source
Advanced Materials, EarlyView.An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee +8 more
wiley +1 more source
Small hydropower plants in Spain: A case study [PDF]
Renewable and Sustainable Energy Reviews, 2011 A small hydropower plant in Spain is studied from an energetic and economic perspective. The viability of the facility is examined using the freeware software RETScreen. Calculated and standard operational data are compared, thereby demonstrating the feasibility of the project from all points of view.
Alonso Tristán, Cristina +4 more
openaire +3 more sources
Advanced Science, EarlyView.This review comprehensively summarizes the atomic defects in TMDs for their applications in sustainable energy storage devices, along with the latest progress in ML methodologies for high‐throughput TEM data analysis, offering insights on how ML‐empowered microscopy facilitates bridging structure–property correlation and inspires knowledge for precise ...
Zheng Luo +6 more
wiley +1 more source
The History of Hydropower in the Chugoku Region, Japan [PDF]
, 2010 Small hydropower is one of renewable energy that is suitable for Japan’s geographical feature of annual abundant rainfall. But the exploitation of small hydropower is backward, compared to EU countries. This paper studies a history of small hydropower in
永井, 健太郎 +4 more
core
Causal‐Guided Ultra‐Long‐Term Time Series Forecasting Via Anticipated Covariates
Advanced Science, EarlyView.Often treated as unknown, information from the future remains underutilized.We demonstrate that in a coupled dynamical system, providing the future state of the effect enables accurate forecasting of the cause for a long timesteps. A time series forecasting paradigm that introduces anticipated covariates to represent such known future states is ...
Jintong Zhao +4 more
wiley +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Silver‐doped cerium oxide nanoparticles (Ag/CeO2 NPs) were synthesized using Ricinus communis seed extract as a bio‐derived fuel in a solution combustion method. The combustion reaction, carried out at 450°C with AgNO3 and (NH4)2[Ce (NO3)6] as metal precursors, produced CeO2 and Ag/CeO2 NPs.
T. N. Ravishankar +5 more
wiley +1 more source