Results 31 to 40 of about 17,323 (265)

A Novel Hybrid GWO-LS Estimator for Harmonic Estimation Problem in Time Varying Noisy Environment

Energies, 2021
The power quality of the Electrical Power System (EPS) is greatly affected by electrical harmonics. Hence, accurate and proper estimation of electrical harmonics is essential to design appropriate filters for mitigation of harmonics and their associated ...
Muhammad Abdullah, Tahir N. Malik, Ali Ahmed, Muhammad F. Nadeem, Irfan A. Khan, Rui Bo   +5 more
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Combined‐harmonics wireless power transfer system

IET Microwaves, Antennas & Propagation
A technique for wireless power transfer (WPT) efficiency improvement by a proper design of the excitation waveform is presented. This improvement is obtained on the one hand by a combined‐harmonics excitation, and on the other hand by exploiting multiple‐
Elham Karimi Marnani, Jalil Rashed‐Mohassel, Mahmoud Shahabadi   +2 more
doaj   +1 more source

Harmonics Mitigation of Industrial Power System Using Passive Filters [PDF]

Mehran University Research Journal of Engineering and Technology, 2012
With the development of modern industrial technology a large number of non-linear loads are used in power system, which causes harmonic distortion in the power system. At the same time the power quality and safe operation becomes inferior.
Zubair Ahmed Memon, Mohammad Aslam Uquaili, Mukhtiar Ali Unar   +2 more
doaj  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Nonlinear Impact of Topological Configuration of Coupled Inverter-Based Resources on Interaction Harmonics Levels of Power Flow

Energies
The increasing level of harmonics in the power grid, driven by a substantial presence of coupled inverter-based energy resources (IBRs), poses a new challenge to power grid transient stability.
Masoud Safarishaal, Rasul Hemmati, Reza Saeed Kandezy, John N. Jiang, Chenxi Lin, Di Wu   +5 more
doaj   +1 more source

Design of Six Pulse Bridge Multiplication Converter Model for Current Harmonic Elimination of Three Phase AC-DC Converter [PDF]

Mehran University Research Journal of Engineering and Technology, 2014
The recent development of semiconductor technology and wide spread use of power electronic devices in power system have open the era of the power system harmonics due to increasing penetration of non-linear loads.
Mansoor Ahmed Soomro, Irfan Ahmed Halepoto, Anwer Ali Sahito   +2 more
doaj  

Impacts of subsynchronous and supersynchronous frequency components on synchrophasor measurements

Journal of Modern Power Systems and Clean Energy, 2016
Phasor measurement units (PMU) are playing an increasingly important role in power system dynamic security monitoring and control. However, the wide-area deployments of the renewable energy sources and the high voltage direct current (HVDC) transmission ...
Hao Liu, Tianshu Bi, Xiqiang Chang, Xiaolong Guo, Lu Wang, Chuang Cao, Qing Yan, Jinsong Li   +7 more
doaj   +1 more source

Power System Distortion Mitigation by Using Series Active Power Filter [PDF]

International Journal of Industry and Sustainable Development, 2020
The power quality improvement faces different significant problems due to the wide use of power electronics and voltage instability. To overcome these different power quality problems, an active power filter is used.
Muhammad Mahmoud, Wael Mamdouh, Hamdy Khalil   +2 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source