Results 21 to 30 of about 8,682,249 (236)

Phase Sequence Exchange Technology Based on MMC for Improving the Power Angle Stability of Power Systems

Energies, 2022
Power angle stability of power systems is one of the main factors which restricts the power transmission capacity. In order to prevent the power angle instability of power systems, phase sequence exchange (PSE) is a recently developed emergency control ...
Peng Dong, Shaofeng Huang, Peng Sun, Tailai Xu, Junjian Lin, Hui Li, Yifan Li   +6 more
doaj   +1 more source

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

Energies, 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, Antonella Signorini, Antonella Marone, Silvia Rosa   +3 more
doaj   +1 more source

Study on Harmonic Impedance Estimation and Harmonic Contribution Evaluation Index

IEEE 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, Yonghai Xu, Haiwei Jiang, Shun Tao   +3 more
doaj   +1 more source

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

IEEE 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, Anqi Guo, Tianle Li, Ruiqi Cheng, Chongqing Jiao   +4 more
doaj   +1 more source

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

Scientific 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, Leiming Hu, Bret H. Howard, Wenqian Xu, Eli Stavitski, Denis Leshchev, August Rothenberger, Kenneth C. Neyerlin, Douglas R. Kauffman   +8 more
doaj   +1 more source

On the economics of renewable energy sources

Energy 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., Hirth, L., Knopf, B., Pahle, M., Schlömer, S., Schmid, E., Ueckerdt, F.   +6 more
openaire   +3 more sources

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

IEEE 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, Shaofeng Huang, Hui Li, Jian Zhang, Gang Huang, Yangjingyi Luo   +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

Zhongguo 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, Shaoming ZHENG, Chang TAO, Yimin LIU, Qian CHEN, Shuhong WANG, Yiting YU, Ancheng XUE   +7 more
doaj   +1 more source

Integrating Variable Renewable Energy in Electric Power Markets: Best Practices from International Experience, Summary for Policymakers [PDF]

, 2012
Many countries -- reflecting very different geographies, markets, and power systems -- are successfully managing high levels of variable renewable energy on the electric grid, including that from wind and solar energy.
Heeter, J., Cochran, J., Bird, L., Arent, D. A.   +3 more
core   +1 more source

Renewable Energy Sources

, 2016
Sustainability concerns resulting from the consumption of natural resources, life-threatening levels of pollution, global warming, climate change and the ever-increasing worldwide energy use have brought renewable energy sources to forefront. Given the possibility of depletion of fossil fuels in the near future, the utilization of clean and renewable ...
Savitskaya, I. V., Matukhin, Dmitriy Leonidovich   +1 more
  +6 more sources