Results 11 to 20 of about 8,006 (201)

Frequency Regulation of an Isolated Microgrid With Electric Vehicles and Energy Storage System Integration Using Adaptive and Model Predictive Controllers

open access: yesIEEE Access, 2021
Energy storage system (ESS) possesses tremendous potential to counter both the rapid growth of intermittent renewable energy resources (RESs) and provide frequency support to the microgrid (MG).
Mishkat Ullah Jan   +5 more
doaj   +1 more source

Simultaneous Hydrogen and Ethanol Production from Crude Glycerol by a Microbial Consortium Using Fed-Batch Fermentation

open access: yesEnergies, 2023
Simultaneous bioproduction of hydrogen and ethanol from cheaper waste feedstock has the potential for the development of a more cost-effective biofuel generation process.
Sanjeet Mehariya   +3 more
doaj   +1 more source

Study on Harmonic Impedance Estimation and Harmonic Contribution Evaluation Index

open access: yesIEEE Access, 2020
Harmonic impedance estimation and suitable evaluation index selection are the key steps of harmonic contribution evaluation. Most of the traditional harmonic impedance estimation methods are only applicable to the scenario, where the background harmonic ...
Ziteng Liu   +3 more
doaj   +1 more source

A Multi-Stage Model for the Electromagnetic Shielding Effectiveness Prediction of an Infinite Conductor Plane With Periodic Apertures

open access: yesIEEE Access, 2019
This paper focuses on the shielding effectiveness (SE) prediction of the periodic aperture array on an infinite conductor plane against a plane electromagnetic wave with its wavelength much larger than the size of a unit cell of the array.
Wanxin Bai   +4 more
doaj   +1 more source

High current density electroreduction of CO2 into formate with tin oxide nanospheres

open access: yesScientific Reports, 2022
In this study, we demonstrate three-dimensional (3D) hollow nanosphere electrocatalysts for CO2 conversion into formate with excellent H-Cell performance and industrially-relevant current density in a 25 cm2 membrane electrode assembly electrolyzer ...
Thuy-Duong Nguyen-Phan   +8 more
doaj   +1 more source

On the economics of renewable energy sources

open access: yesEnergy Economics, 2013
Abstract With the global expansion of renewable energy (RE) technologies, the provision of optimal RE policy packages becomes an important task. We review pivotal aspects regarding the economics of renewables that are relevant to the design of an optimal RE policy, many of which are to date unresolved.
Edenhofer, O.   +6 more
openaire   +3 more sources

A New Phase Sequence Exchanging Control Method for Reducing Impulse Current and Voltage

open access: yesIEEE Access, 2019
Phase sequence exchanging technology (PSET) is a recently developed emergency control technology for out-of-step power systems. The PSET system does not satisfy the condition of synchronization however, and will produce impulse current and impact torque.
Yifan Li   +5 more
doaj   +1 more source

The Construction of the Professional Dictionary of Relay Protection Defect Text in a Regional Power Grid and Its Natural Language Characteristics Analysis

open access: yesZhongguo dianli, 2023
Massive defect text data of relay protection devices is lack of data mining based on professional dictionary. It cannot provide sufficient support for grading, diagnosing, and eliminating relay protection defects, thus unable to meet efficient operation ...
Zhongshuo LIU   +7 more
doaj   +1 more source

Shielding Effectiveness Analysis of the Conducting Spherical Shell With a Circular Aperture Against Low Frequency Magnetic Fields

open access: yesIEEE Access, 2020
In this paper, an analytical model is presented to calculate the low frequency magnetic shielding effective (SE) of the spherical shell with a circular aperture and finite conductivity.
Xiaochen Yang   +4 more
doaj   +1 more source

A New Technology Applied to Power System Stability Control: Phase Sequence Exchange Technology

open access: yesIEEE Access, 2019
AC transmission systems are often affected by stability issues. During the design phase of such systems, their ability to cope with the various kinds of disturbance is taken into consideration, however, sudden large disturbances may still result in power
Shaofeng Huang   +3 more
doaj   +1 more source

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