Results 1 to 10 of about 2,465,589 (206)

Tracking error analysis of primary mirror in Linear Fresnel heat collecting field [PDF]

open access: yesE3S Web of Conferences, 2021
Aiming at the tracking error of the primary mirror in the Linear Fresnel concentrated light and heat field, according to the structural characteristics of the Linear Fresnel concentrating and heat collecting system, the analysis model of the system ...
ZhiYong Zhang   +3 more
doaj   +1 more source

Integration of energy systems [PDF]

open access: yesMRS Bulletin, 2021
This article in MRS Bulletin and the framework set out in the introductory article articulate a scenario of renewable electrons and electrification of end use appliances and industrial processes as a plausible paradigm to realize a carbon-free energy economy.
Douglas J. Arent   +7 more
openaire   +4 more sources

A Collaborative Governance Strategy for Power Quality in AC/DC Distribution Networks Considering the Coupling Characteristics of Both Sides

open access: yesSensors, 2023
The interactions between power quality in the AC-DC distribution network segments contribute to the distributed propagation of power quality anomalies throughout the entire network.
Jiang Wang   +6 more
doaj   +1 more source

Compressive Strength Estimation and CO2 Reduction Design of Fly Ash Composite Concrete

open access: yesBuildings, 2022
Fly ash is broadly utilized to produce concrete materials. This study presents a strength estimation model and a CO2 reduction design method for concrete with fly ash.
Yi Han, Run-Sheng Lin, Xiao-Yong Wang
doaj   +1 more source

Improvements to and Experimental Validation of PI Controllers Using a Reference Bias Control Algorithm for Wind Turbines

open access: yesEnergies, 2022
In this study, a reference bias control (RBC) algorithm for variable speed and variable pitch wind turbines was designed and validated. To improve the performance of conventional PI control algorithms, the RBC algorithm applies biased references to power
Taesu Jeon, Dongmyoung Kim, Insu Paek
doaj   +1 more source

Selection of Input Factors and Comparison of Machine Learning Models for Prediction of Dissolved Oxygen in Gyeongan Stream

open access: yes대한환경공학회지, 2021
Objectives : In this study, we select input factors for machine learning models to predict dissolved oxygen (DO) in Gyeongan Stream and compare results of performance evaluation indicators to find the optimal model.
Min Ji Kim   +3 more
doaj   +1 more source

A flexible hydrogen-electricity coproduction system through the decoupling of units with different dynamic characteristics

open access: yesCarbon Neutrality, 2023
Regarding the carbon neutrality target, the proportion of renewable energy in global energy sources is predicted to increase to 50% by 2050, and the increment in penetration requires fossil fuel power plants to play a key role in grid peak regulation ...
Chaowei Wang, Yanbing Wei, Lin Gao
doaj   +1 more source

A Novel Ensemble Fault Diagnosis Model for Main Circulation Pumps of Converter Valves in VSC-HVDC Transmission Systems

open access: yesSensors, 2023
The intelligent fault diagnosis of main circulation pumps is crucial for ensuring their safe and stable operation. However, limited research has been conducted on this topic, and applying existing fault diagnosis methods designed for other equipment may ...
Sihan Zhou   +9 more
doaj   +1 more source

Design and Verification of the LQR Controller Based on Fuzzy Logic for Large Wind Turbine

open access: yesEnergies, 2021
In this study, a linear quadratic regulator based on the fuzzy logic (LQRF) control algorithm for a variable-speed variable-pitch wind turbine was designed.
Taesu Jeon, Insu Paek
doaj   +1 more source

Design and Validation of Demanded Power Point Tracking Control Algorithm for MIMO Controllers in Wind Turbines

open access: yesEnergies, 2021
In this study, a demanded power point tracking (DPPT) control algorithm was designed for the application of multiple-input multiple-output (MIMO) modern control algorithms.
Taesu Jeon   +3 more
doaj   +1 more source

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