scholarly journals On The Tuning And Performance Of Stand-Alone Large-Power Pv Irrigation Systems

2022 ◽  
pp. 100175
Author(s):  
Juan Ignacio Herraiz ◽  
José Fernández-Ramos ◽  
Rita Hogan Almeida ◽  
Eva María Báguena ◽  
Manuel Castillo-Cagigal ◽  
...  
Keyword(s):  
Irrigation Systems ◽  
Large Power ◽  
And Performance

scholarly journals Economic assessment of large power photovoltaic irrigation systems in the ECOWAS region

Energy ◽  
2018 ◽  
Vol 155 ◽  
pp. 992-1003 ◽  
Author(s):  
C. Lorenzo ◽  
R.H. Almeida ◽  
M. Martínez-Núñez ◽  
L. Narvarte ◽  
L.M. Carrasco
Keyword(s):  
Economic Assessment ◽  
Irrigation Systems ◽  
Large Power

Comparative analysis of the economic feasibility of five large-power photovoltaic irrigation systems in the Mediterranean region

2020 ◽  
Vol 145 ◽  
pp. 2671-2682
Author(s):  
Isaac Barata Carrêlo ◽  
Rita Hogan Almeida ◽  
Luis Narvarte ◽  
Francisco Martinez-Moreno ◽  
Luis Miguel Carrasco
Keyword(s):  
Comparative Analysis ◽  
Mediterranean Region ◽  
Economic Feasibility ◽  
Irrigation Systems ◽  
Large Power ◽  
The Mediterranean

WATT MATTERS MOST? DESIGN SPACE EXPLORATION OF HIGH-PERFORMANCE MICROPROCESSORS FOR POWER-PERFORMANCE EFFICIENCY

2007 ◽  
Vol 16 (03) ◽  
pp. 357-378
Author(s):  
PEDRO TRANCOSO
Keyword(s):  
High Performance ◽  
Design Space Exploration ◽  
High Sensitivity ◽  
Clock Frequency ◽  
Power Performance ◽  
Large Power ◽  
Multiple Parameters ◽  
And Performance ◽  
The One ◽  
Power Awareness

Computer systems have evolved significantly in the last years leading to high-performance systems. This, however, has come with a cost of large power dissipation. As such, power-awareness has become a major factor in processor design. Therefore, it is important to have a complete understanding of the power and performance behavior of all processor components. In order to achieve this, the current work presents a comprehensive analysis of power-performance efficiency for different high-end microarchitecture configurations using three different workloads: multimedia, scientific, and database. The objectives of this work are: (1) to analyze and compare the power-performance efficiency for different workloads; (2) to present a sensitivity analysis for the microarchitecture parameters in order to identify which ones are more sensitive to changes in terms of power-performance efficiency; and (3) to propose power-performance efficient configurations for each workload. The simulation results show that the multimedia workload is the one achieving the highest efficiency but the database workload is the most sensitive to parameter changes. In addition, the results also show that the parameter sensitivity depends significantly on the workload. While the issue width and clock frequency present very high sensitivity across all workloads (approximately 100%), for the database workload, the first-level instruction cache size shows an even higher sensitivity (149%). The correct configuration of these microarchitecture parameters is essential. A careless configuration of a single parameter from a baseline setup may result in a loss of the power-performance efficiency of up to 99%. Finally, carefully tuning multiple parameters simultaneously may result in gains up to 154% over the power-performance efficiency of the baseline configuration.

scholarly journals COMPARISON OF ALTERNATIVE IRRIGATION SYSTEMS FOR CONTAINER NURSERY STOCK PRODUCTION

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 602b-602
Author(s):  
James B. Calkins ◽  
Bert T. Swanson ◽  
Daniel G. Krueger ◽  
Karin R. Lundquist
Keyword(s):  
Plant Growth ◽  
Water Use ◽  
Sprinkler Irrigation ◽  
Trickle Irrigation ◽  
Irrigation Systems ◽  
Nursery Stock ◽  
Use Efficiency ◽  
Irrigation Treatments ◽  
And Performance ◽  
Production Areas

A study was designed to ascertain the efficacy, water use efficiency, runoff potential, and cost effectiveness of four container irrigation systems: overhead sprinkler irrigation, in-line trickle irrigation, capillary mat with leaky hose, and sub-irrigation. Results were species dependent. Plant growth was best under capillary mat and trickle irrigation treatments, however, differences in plant growth and performance between irrigation treatments were minimal. Differences in water use, however, were quite significant. Overhead irrigation was inefficient regarding water use while capillary mat and trickle systems used much lower volumes of water. Conservative irrigation systems which maintain acceptable plant growth using less water and reduce runoff from container production areas can clearly benefit growers by reducing production and environmental costs.

scholarly journals Embodied Energy and Environmental Impact of Large-Power Stand-Alone Photovoltaic Irrigation Systems

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2110 ◽  
Author(s):  
Giuseppe Todde ◽  
Lelia Murgia ◽  
Isaac Carrelo ◽  
Rita Hogan ◽  
Antonio Pazzona ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Energy Demand ◽  
Power Plants ◽  
Irrigation System ◽  
Environmental Indicators ◽  
Embodied Energy ◽  
Irrigation Systems ◽  
Large Power ◽  
Payback Time ◽  
Pv Generator

A life cycle assessment (LCA) methodology was used to evaluate the cumulative energy demand and the related environmental impact of three large-power stand-alone photovoltaic (PV) irrigation systems ranging from 40 kWp to 360 kWp. The novelty of this analysis is the large power of these systems as the literature up to now is restricted to modeled PV pumping systems scenarios or small power plants, where the size can be a critical factor for energy and environmental issues. The analysis shows that the yearly embodied energy per unit of PV power ranged from 1306 MJ/kWp to 1199 MJ/kWp depending of the PV generator size. Similarly, the related yearly carbon dioxide impacts ranged from 72.6 to 79.8 kg CO2e/kWp. The production of PV modules accounted for the main portion (about 80%) of the primary energy embodied into the PV irrigation system (PVIS). The outcomes of the study also show an inverse trend of the energy and carbon payback times respect to the PV power size: In fact, energy payback time increased from 1.94, to 5.25 years and carbon payback time ranged from 4.62 to 9.38 years. Also the energy return on investment depends on the PV generator dimension, ranging from 12.9 to 4.8. The environmental impact of the stand-alone PV systems was also expressed in reference to the potential amount of electricity generated during the whole PV life. As expected, the largest PVIS performs the best result, obtaining an emission rate of 45.9 g CO2e per kWh, while the smallest one achieves 124.1 g CO2e per kWh. Finally, the energy and environmental indicators obtained in this study are strongly related to the irrigation needs, which in turn are influenced by other factors as the type of cultivated crops, the weather conditions and the water availability.

scholarly journals Infrastructure mapping and performance assessment of irrigation system using GIS and remote sensing

2021 ◽  
Vol 264 ◽  
pp. 03005
Author(s):  
Jasurbek Narziev ◽  
Bhaskar Nikam ◽  
Furqat Gapparov
Keyword(s):  
Remote Sensing ◽  
Performance Assessment ◽  
Irrigation System ◽  
Pilot Project ◽  
Command Area ◽  
Irrigation Systems ◽  
Gis And Remote Sensing ◽  
Irrigation Water Management ◽  
Water Canal ◽  
And Performance

Hence evaluating and improving the performance of irrigation systems is of paramount importance in Irrigation Water Management. Researchers are making many attempts to evaluate and benchmark the performance of irrigation systems. All of them have concluded that the non-availability of a detailed database limits their efforts. Keeping this in mind, an attempt is made in this pilot project titled “Infrastructure mapping and Performance Assessment of Irrigation system using GIS and Remote Sensing.” The results indicate that the Irrigation system's performance is satisfactory, but the water supply is not adequate if surface water (canal water) is the only source of irrigation. The analysis of feedback collected from farmers indicates that the positive project impacts agricultural productivity and socio-economics in the command area.

scholarly journals Application of Neuro-Fuzzy Controller to Replace SMIB and Interconnected Multi-Machine Power System Stabilizers

2020 ◽  
Vol 12 (22) ◽  
pp. 9591 ◽  
Author(s):  
Aliyu Sabo ◽  
Noor Izzri Abdul Wahab ◽  
Mohammad Lutfi Othman ◽  
Mai Zurwatul Ahlam Mohd Jaffar ◽  
Hakan Acikgoz ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Fuzzy Controller ◽  
Operating Conditions ◽  
System Stability ◽  
Test Power ◽  
Large Power ◽  
Neuro Fuzzy ◽  
And Performance ◽  
Damping Controller

In this research, an effective application and performance assessment of the Neuro-Fuzzy Controller (NFC) damping controller is designed to replace a single machine infinite bus (SMIB) power system stabilizer (PSS), and coordinated multi PSSs in large interconnected power systems are presented. The limitation of the conventional PSSs on SMIB and interconnected multi-machine test power systems are exposed and disclosed by the proposed NFC stabilizer. The NFC is a nonlinear robust controller which does not require a mathematical model of the test power system to be controlled, unlike the conventional PSSs’ damping controller. The Proposed NFC is designed to improve the stability of SMIB, an interconnected IEEE 3-machine, 9-bus power system, and an interconnected two-area 10-machine system of 39-bus New England IEEE test power system under multiple operating conditions. The proposed NFC damping controller performance is compared with the conventional PSS damping controller to confirm the capability of the proposed stabilizer and realize an improved system stability enhancement. The conventional PSSs’ design problem is transformed into an optimization problem where an eigenvalue-based objective function is developed and applied to design the SMIB-PSS and the interconnected multi-machine PSSs. The time-domain phasor simulation was done in the SIMULINK domain, and the simulation results show that the transient responses of the system rise time, settling time, peak time, and peak magnitude were all impressively improved by an acceptable amount for all the test system with the proposed NFC stabilizer. Thus, the NFC was able to effectively control the LFOs and produce an enhanced performance compared to the conventional PSS damping controller. Similarly, the result validates the effectiveness of the proposed NFC damping controller for LFO control, which demonstrates more robustness and efficiency than the classical PSS damping controller. Therefore, the application and performance of the NFC has appeared as a promising method and can be considered as a remarkable method for the optimal design damping stabilizer for small and large power systems.

Crankshaft of RMP Analysis Based on CAE

2011 ◽  
Vol 467-469 ◽  
pp. 1921-1926
Author(s):  
Bin Peng
Keyword(s):  
High Pressure ◽  
Stress Analysis ◽  
High Performance ◽  
High Reliability ◽  
Movement Analysis ◽  
Large Power ◽  
Main Stress ◽  
And Performance ◽  
Main Components ◽  
Dangerous Condition

Crankshaft is one of the main components in reciprocating mud pump (RMP). Its stress significantly affects reliability and performance of high pressure and large power RMP. In this study CAE stress analysis was actively applied to secure the high reliability of main components and improve the performance of RMP. Through movement analysis and computation for various components of RMP, the load of crankshaft was obtained. By effectively using CAE stress analysis to three kinds of dangerous working conditions of crankshaft, distribution characteristics of the max main stress, the min. main stress and the Mises stress were obtained. The most dangerous condition and position were gotten through stress analysis. The analysis results give theory support for design and development of high pressure, large power, high performance and high reliability RMP.

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